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	<title>greenhouse-gas &amp;laquo; WordPress.com Tag Feed</title>
	<link>http://wordpress.com/tag/greenhouse-gas/</link>
	<description>Feed of posts on WordPress.com tagged "greenhouse-gas"</description>
	<pubDate>Fri, 08 Aug 2008 20:55:22 +0000</pubDate>

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<title><![CDATA[Prepare For Global Temperature Rise of 4C, Warns Top Scientist ]]></title>
<link>http://liberaljesus.wordpress.com/?p=78</link>
<pubDate>Thu, 07 Aug 2008 21:56:14 +0000</pubDate>
<dc:creator>liberaljesus</dc:creator>
<guid>http://liberaljesus.wordpress.com/?p=78</guid>
<description><![CDATA[Published on Thursday, August 7, 2008 by The Guardian/UK
Defra’s chief adviser says we need strate]]></description>
<content:encoded><![CDATA[<p><span class="post-date">Published on Thursday, August 7, 2008 by <a href="http://www.guardian.co.uk/environment/2008/aug/06/climatechange.scienceofclimatechange" target="_new">The Guardian/UK</a></span></p>
<h2><span style="font-size:small;">Defra’s chief adviser says we need strategy to adapt to potential catastrophic increase</span></h2>
<div class="post-credit">by James Randerson</div>
<p>The UK should take active steps to prepare for dangerous climate change of perhaps 4C according to one of the government’s chief scientific advisers.<a title="0807 01 1" href="http://www.commondreams.org/archive/wp-content/photos/0807_01_1.jpg"><img src="http://www.commondreams.org/archive/wp-content/photos/0807_01_1.jpg" border="0" alt="0807 01 1" hspace="10" vspace="10" width="350" height="251" align="right" /></a></p>
<p>In policy areas such as flood protection, agriculture and coastal erosion Professor Bob Watson said the country should plan for the effects of a 4C global average rise on pre-industrial levels. The EU is committed to limiting emissions globally so that temperatures do not rise more than 2C.</p>
<p>“There is no doubt that we should aim to limit changes in the global mean surface temperature to 2C above pre-industrial,” Watson, the chief scientific adviser to the Department for the Environment, Food and Rural Affairs, told the Guardian. “But given this is an ambitious target, and we don’t know in detail how to limit greenhouse gas emissions to realise a 2 degree target, we should be prepared to adapt to 4C.”</p>
<p><a href="http://www.guardian.co.uk/environment/audio/2008/aug/07/james.randerson.climate.change.bob.watson" target="_blank">Link to this audio<br />
James Randerson: ‘Massive shifts in Earth’s systems’</a></p>
<p>Globally, a 4C temperature rise would have a catastrophic impact.</p>
<p>According to the government’s 2006 Stern review on the economics of climate change, between 7 million and 300 million more people would be affected by coastal flooding each year, there would be a 30-50% reduction in water availability in Southern Africa and the Mediterranean, agricultural yields would decline 15 to 35% in Africa and 20 to 50% of animal and plant species would face extinction.</p>
<p>In the UK, the most significant impact would be rising sea levels and inland flooding. Climate modellers also predict there would be an increase in heavy rainfall events in winter and drier summers.</p>
<p>Watson’s plea to prepare for the worst was backed up by the government’s former chief scientific adviser, Sir David King. He said that even with a comprehensive global deal to keep carbon dioxide levels in the atmosphere at below 450 parts per million there is a 50% probability that temperatures would exceed 2C and a 20% probability they would exceed 3.5C.</p>
<p>“So even if we get the best possible global agreement to reduce greenhouse gasses on any rational basis you should be preparing for a 20% risk so I think Bob Watson is quite right to put up the figure of 4 degrees,” he said.</p>
<p>One big unknown is the stage at which dangerous tipping points would be reached that lead to further warming - for example the release of methane hydrate deposits in the Arctic. “My own feeling is that if we get to a 4 degree rise it is quite possible that we would begin to see a runaway increase,” said King.</p>
<p>He said a two-and-half-year analysis by the government’s Foresight programme on the implications for coastal defences had more impact in the corridors of power than any other research on the effects of climate change that he presented.</p>
<p>“No other single factor focussed the minds of the cabinet more than the analysis that I produced through that … We begin to have to talk about ordered retreat from some areas of Britain because it becomes impossible to defend,” he said. “There’s no choice here between adaptation and mitigation, we have to do both.”</p>
<p>Other experts were concerned that Watson’s comments might be seen as defeatist and an admission that emissions reductions were impossible to achieve.</p>
<p>“At 4 degrees we are basically into a different climate regime,” said Prof Neil Adger, an expert on adaptation to climate change at the Tyndall Centre for Climate Change Research in Norwich.</p>
<p>“I think that is a dangerous mindset to be in. Thinking through the implications of 4 degrees of warming shows that the impacts are so significant that the only real adaptation strategy is to avoid that at all cost because of the pain and suffering that is going to cost.</p>
<p>“There is no science on how we are going to adapt to 4 degrees warming. It is actually pretty alarming,” he added.</p>
<p>Speaking to the Guardian, Watson, who is a former science adviser to President Clinton and ex-chief scientist at the World Bank, said the UK should take a lead in research on carbon capture and storage (CCS).</p>
<p>Alluding to the US effort in the 1960s to put a man on the moon he advocated an “Apollo-type programme” to introduce 10 to 20 CCS pilot projects - which work by burying carbon dioxide from burning fossil fuels underground - among OECD countries to develop the technology.</p>
<p>“This would allow coal-fired power plants that are currently being built to be modular and capable of having carbon capture retrofitted, and would show the world that we take the issue of climate change seriously, thus demonstrating real leadership. Without this technology we have a real problem.”</p>
<p>He also said as coal burning is cleaned up to remove harmful sulphur pollution climate change would actually get worse. The sulphur aerosols are actually preventing some warming from taking place currently.</p>
<p>“This offsetting effect, which is equivalent to about 100 parts per million of carbon dioxide, will largely disappear if China and India follow the lead of the US and Europe in limiting sulphur emissions, the cause of acid deposition,” he said.</p>
<p align="center">© 2008 The Guardian</p>
<p align="center">
<p style="text-align:left;">Time to build a boat or move to the Rockies! - LJ</p>
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<title><![CDATA[The Best Way to Promote Green Cities is Green Fuel]]></title>
<link>http://abineshraja.wordpress.com/?p=318</link>
<pubDate>Tue, 05 Aug 2008 15:49:47 +0000</pubDate>
<dc:creator>abineshraja</dc:creator>
<guid>http://abineshraja.wordpress.com/?p=318</guid>
<description><![CDATA[
If you want your region to adopt the green phenomena and start gearing towards the alternative use ]]></description>
<content:encoded><![CDATA[<p><img src="http://keetsa.com/blog/wp-content/uploads/2008/02/biofuel_main.jpg" alt="Biofuel" /><br />
If you want your region to adopt the green phenomena and start gearing towards the alternative use of biodiesel to reduce carbon emissions, leading by example with all machinery use by a public service utility vehicles is sure to kick off in the right manner. Such is an example used by the Rugby Borough Council which has announced that it shall be operating all diesel-powered vehicles with biofuel to help reduce the growing greenhouse gas emissions we all hear of today.</p>
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<title><![CDATA[Oil Prices and Global Warming]]></title>
<link>http://abineshraja.wordpress.com/?p=316</link>
<pubDate>Tue, 05 Aug 2008 15:48:15 +0000</pubDate>
<dc:creator>abineshraja</dc:creator>
<guid>http://abineshraja.wordpress.com/?p=316</guid>
<description><![CDATA[
Both these occurrences, global warming and the continuing oil price surge have been economic catast]]></description>
<content:encoded><![CDATA[<p><img class="alignnone size-medium wp-image-6687" src="http://keetsa.com/blog/wp-content/uploads/2008/05/gas_price_sign_rise_009.jpg" alt="Global Warming and Oil" width="178" height="220" /><br />
Both these occurrences, global warming and the continuing oil price surge have been economic catastrophes that most people have to deal with. It has been getting harder to live in this world today and apparently each effort seems to be getting futile by the day. With these things in mind, where does the government fit in?</p>
<p>There are two ways to look at it. One is to see how government can benefit from it. Additional taxes and of course connecting them with global warming for a justifiable declaration. No one would bother to check in depth although the economists would do their own pencil pushing.</p>
<p>The other is of course the hands-off policy to which the government will wait for everything to settle and then make its move. Either way, the government will benefit while also taking credit from it once the worst is over for these two dilemmas besetting us today.</p>
<blockquote><p>Our government is jumping aboard the global warming bandwagon in a big way. Ignoring any facts to the contrary, they continue to fuel a juggernaut that will result in more government, more taxes, more ‘crises’ and more useful idiots. Even Republicans are on board, with John McCain turning green with a twist guaranteed to garner liberal votes. He’s proposed a ‘cap and trade’ system (called redistribution of wealth) to help battle <span class="kLink" style="text-decoration:underline !important;position:static;"><span style="color:orange !important;font-weight:400;font-size:12px;position:static;"><span class="kLink" style="border-bottom:1px solid orange;color:orange !important;font-family:Georgia,&#34;font-weight:400;font-size:12px;position:static;padding-bottom:1px;background-color:transparent;">climate </span><span class="kLink" style="border-bottom:1px solid orange;color:orange !important;font-family:Georgia,&#34;font-weight:400;font-size:12px;position:static;padding-bottom:1px;background-color:transparent;">change</span></span></span>. It used to be only liberals who had the hubris to think man can control climate.</p></blockquote>
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<title><![CDATA[Device Captures Methane From Cows Using Ordinary Balloon]]></title>
<link>http://darkmatter0205.wordpress.com/?p=60</link>
<pubDate>Tue, 05 Aug 2008 02:48:58 +0000</pubDate>
<dc:creator>darkmatter0205</dc:creator>
<guid>http://darkmatter0205.wordpress.com/?p=60</guid>
<description><![CDATA[Madison, WI - Methane from cows contributes an estimated 100 million tons of greenhouse gases into t]]></description>
<content:encoded><![CDATA[<p><strong>Madison, WI</strong> - Methane from cows contributes <a href="http://www.newscientist.com/article/mg12216635.100-methane--the-hidden-greenhouse-gas-methane-from-cowsrubbish-tips-and-rice-fields-is-warming-the-earth-car-exhausts-may-helptheprocess-but-methane-from-the-arctic-tundra-could-be-most-damaging-of-all.html">an estimated 100 million tons</a> of greenhouse gases into the atmosphere every year. Capturing even a portion of this pollution at it's source would make a significant contribution to slowing down global warming. Now Phil Waltham, 53, of Madison, Wisconsin believes he has found a solution. "My cows don't seem to mind it. Some even seem to think it gives them a bit of a social edge," said Waltham, standing in front of his field of cows fitted with his experimental methane-capture device. "Of course, learning to attach the balloon properly and get out of the way takes a bit of doing," he said.</p>
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<title><![CDATA[Tom Friedman offers an authentic reason to worry about greehouse gases]]></title>
<link>http://robertg69.wordpress.com/?p=1226</link>
<pubDate>Sun, 03 Aug 2008 20:39:30 +0000</pubDate>
<dc:creator>BobG in Vancouver</dc:creator>
<guid>http://robertg69.wordpress.com/?p=1226</guid>
<description><![CDATA[Image via Wikipedia
77 degrees 45 minutes N. latitude,
51 degrees 6 minutes W. longitude
Since he is]]></description>
<content:encoded><![CDATA[<div class="zemanta-img" style="float:right;display:block;margin:1em;"><a href="http://commons.wikipedia.org/wiki/Image:Northern_Hemisphere_LamAz.png"><img style="border:medium none;display:block;" src="http://upload.wikimedia.org/wikipedia/commons/thumb/e/e4/Northern_Hemisphere_LamAz.png/202px-Northern_Hemisphere_LamAz.png" alt="Northern Hemisphere of Earth (Lambert Azimutha..." /></a><span class="zemanta-img-attribution">Image via <a href="http://commons.wikipedia.org/wiki/Image:Northern_Hemisphere_LamAz.png">Wikipedia</a></span></div>
<p>77 degrees 45 minutes N. latitude,</p>
<p>51 degrees 6 minutes W. longitude</p>
<p>Since he is a well known writer of books about the global economy, Friedman gets invited to unique places in the world. After visiting a unique research project involving extracting ice cores of much earlier times on earth, he wrote these words to end his column in today's NY Times:</p>
<blockquote><p>In an article just published in the journal Science Express, Dahl-Jensen’s team wrote about how it had discovered from the ice cores that the atmospheric circulation in the Northern Hemisphere over <a class="zem_slink" title="Greenland" rel="wikipedia" href="http://en.wikipedia.org/wiki/Greenland">Greenland</a> “changed abruptly” just as <a class="zem_slink" title="Last glacial period" rel="wikipedia" href="http://en.wikipedia.org/wiki/Last_glacial_period">the last ice age</a> ended around 11,700 years ago.</p>
<p>It seems to have been driven by a sudden change in monsoons in the tropics. The change was so abrupt that it warmed the Northern Hemisphere over Greenland by 10 degrees Celsius in just 50 years — a dramatic increase.</p>
<p>“It shows that our climate system has the ability to make very abrupt changes all by itself,” said Dahl-Jensen.</p>
<p>Some climate-change deniers would say that this proves that mankind is not important in changing the climate. Climate change experts, like Dahl-Jensen, say it’s not so simple: The climate is always changing, sometimes very abruptly, so the last thing that mankind should be doing is adding its own forcing actions — like pumping unprecedented amounts of <a class="zem_slink" title="Greenhouse gas" rel="wikipedia" href="http://en.wikipedia.org/wiki/Greenhouse_gas">greenhouse gases</a> into the atmosphere. Because you never know — <span class="italic">you never know</span> —  what will tip the balance and send us hurdling into another abrupt change ... and into another era.</p></blockquote>
<p>Are you still unwilling to change your <a class="zem_slink" title="Carbon footprint" rel="wikipedia" href="http://en.wikipedia.org/wiki/Carbon_footprint">carbon footprint</a>?</p>
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<title><![CDATA[Not so Classical Gas]]></title>
<link>http://wave4.wordpress.com/?p=226</link>
<pubDate>Wed, 30 Jul 2008 18:55:18 +0000</pubDate>
<dc:creator>Leane Roffey Line</dc:creator>
<guid>http://wave4.wordpress.com/?p=226</guid>
<description><![CDATA[SF5CF3 &#8212; otherwise known as triflouromethyl sulfur pentaflouride, is 18,000 times more effecti]]></description>
<content:encoded><![CDATA[<p>SF5CF3 -- otherwise known as triflouromethyl sulfur pentaflouride, is 18,000 times more effective as a heat trapper than carbon dioxide, and has an estimated lifetime of 1,000 years. The good news...it's pretty rare. The bad news, the concentration apparently is growing. More good news: control of this greenhouse gas might come down to a solvable engineering problem.  So much of today's environmental concerns can be addressed with some good old-fashioned R&#38;D. We actually had that once upon a time, R&#38;D that is, before bean counters and shareholder dividends became the Nutcrackers and Sugar Plum Fairies of American engineering. In fact, it kind of got us in the mess we're in. It can get us out, too, so peeps with foundations and money: put the word out!</p>
<p><!--more--></p>
<p><a href="http://water.usgs.gov/lab/sf5cf3/background/">Used in ground water analyses</a> , SF<sub>5</sub>CF<sub>3</sub> has a dating range from 1975 to modern; the atmospheric concentration in North American air has increased from the detection limit of 0.005 parts per trillion by volume (pptv) to the 2006 concentration of about 0.16 pptv. No evidence has been found for degradation of SF<sub>5</sub>CF<sub>3</sub> in laboratory anaerobic systems, or of a terrigenic source.</p>
<p>It has been <a href="http://mercury.ornl.gov/metadata/cdiac/html/cdiac/cdiac.ornl.gov_8080_xml_cdp_metadata_Trends_Other_atm_gas_Sturges.html">found</a> in air compressed under layers of Antarctic snow, and speculation remains open on whether it is a breakdown product of a gas used to insulate high voltage equipment.</p>
<p>(<span style="font-family:Arial;">Sturges et al. (2000) as cited at "found" link, speculate that the former may originate as a breakdown product of the latter in high-voltage equipment. While the current radiative forcing of SF5CF3 may be minor, the high growth rate and long atmospheric residence time suggest that the greenhouse significance of this gas could increase markedly in the future. Conversely, SF5CF3 appears not to have any natural sources, so control might be feasible, once the sources are identified.)</span></p>
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<title><![CDATA[Good and practical news from NY Times Science News]]></title>
<link>http://robertg69.wordpress.com/?p=1082</link>
<pubDate>Tue, 29 Jul 2008 15:51:41 +0000</pubDate>
<dc:creator>BobG in Vancouver</dc:creator>
<guid>http://robertg69.wordpress.com/?p=1082</guid>
<description><![CDATA[Image via Wikipedia
NY Times is full of all kinds of news. In fact, it claims to &#8220;print all th]]></description>
<content:encoded><![CDATA[<div class="zemanta-img" style="float:right;display:block;margin:1em;"><a href="http://en.wikipedia.org/wiki/Image:EM-spectrum.png"><img style="border:medium none;display:block;" src="http://upload.wikimedia.org/wikipedia/en/thumb/3/33/EM-spectrum.png/202px-EM-spectrum.png" alt="Different types of electromagnetic radiation." /></a><span class="zemanta-img-attribution">Image via <a href="http://en.wikipedia.org/wiki/Image:EM-spectrum.png">Wikipedia</a></span></div>
<p>NY Times is full of all kinds of news. In fact, it claims to "print all the news that is fit to print".</p>
<p>In its Science section NYT publishes the writings of that once wannabe scientist John Tierney. In his latest (7/29) he offers positive information about 10 things you might worry about, whether on vacation or not.</p>
<p><strong><span class="bold">1. Killer <a class="zem_slink" title="Hot dog" rel="youtube" href="http://www.youtube.com/watch?v=vDPJD-df7E4">hot dogs</a>.</span></strong></p>
<p>Given the latest results about the positive results of <a class="zem_slink" title="Saturated fat" rel="wikipedia" href="http://en.wikipedia.org/wiki/Saturated_fat">saturated fat</a> diets "If you must worry, focus on the carbs in the bun. But when it comes to the fatty frank — or the fatty anything else on vacation — I’d relax."</p>
<p><strong><span class="bold">2. Your car’s planet-destroying A/C.</span></strong></p>
<p>"After doing tests at 65 miles per hour, the <a href="http://www.edmunds.com/advice/fueleconomy/articles/106842/article.html#test4" target="_blank">mileage experts at  edmunds.com</a> report that the aerodynamic drag from opening the windows cancels out any fuel savings from turning off the air-conditioner."</p>
<p><strong><span class="bold">3. Forbidden fruits from afar.</span></strong></p>
<p>"Food from other countries is often produced and shipped much more efficiently than domestic food, particularly if the local producers are hauling their wares around in small trucks. One study showed that apples shipped from New Zealand to Britain had a smaller <a class="zem_slink" title="Carbon footprint" rel="wikipedia" href="http://en.wikipedia.org/wiki/Carbon_footprint">carbon footprint</a> than apples grown and sold in Britain."</p>
<p><strong><span class="bold">4. Carcinogenic cellphones. </span></strong></p>
<p>"As my colleague Tara Parker-Pope has <a href="http://nytimes.com/2008/06/03/health/03well.html">noted</a>, there is no known biological mechanism for the phones’ <a class="zem_slink" title="Non-ionizing radiation" rel="wikipedia" href="http://en.wikipedia.org/wiki/Non-ionizing_radiation">non-ionizing radiation</a> to cause <a title="In-depth reference and news articles about Cancer." href="http://health.nytimes.com/health/guides/disease/cancer/overview.html?inline=nyt-classifier">cancer</a>, and epidemiological studies have failed to find consistent links between cancer and cellphones."</p>
<p><strong><span class="bold">5. Evil plastic bags.</span></strong></p>
<p>"<a href="http://web.archive.org/web/20060426235724/http://www.epa.gov/region1/communities/shopbags.html" target="_blank">Take it from the  Environmental Protection Agency</a> : paper bags are not better for the environment than plastic bags. If anything, the evidence from life-cycle analyses favors plastic bags. They <a href="http://www.reason.org/commentaries/smithheisters_20080417.shtml" target="_blank">require much less energy</a> — and <a class="zem_slink" title="Greenhouse gas" rel="wikipedia" href="http://en.wikipedia.org/wiki/Greenhouse_gas">greenhouse emissions</a> — to manufacture, ship and recycle. They generate less air and water pollution. And they take up much less space in landfills."</p>
<p>If you want to know about the <a href="http://www.nytimes.com/2008/07/29/science/29tier.html?partner=rssnyt&#38;emc=rss">other 5 items click here!</a></p>
<p>I guess it's as true as ever that getting better information is a good antidote to panicking about negative reports from wherever, MSM, the Internet, your favorite radio voice . . .</p>
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<title><![CDATA[C]]></title>
<link>http://framesblog.wordpress.com/?p=160</link>
<pubDate>Tue, 29 Jul 2008 13:54:05 +0000</pubDate>
<dc:creator>Daniel Alexander</dc:creator>
<guid>http://framesblog.wordpress.com/?p=160</guid>
<description><![CDATA[Why Carbon Is Not A Bad Word
]]></description>
<content:encoded><![CDATA[<p><a title="Link to TIME article" href="http://www.time.com/time/health/article/0,8599,1826813,00.html" target="_blank">Why <em>Carbon</em> Is Not A Bad Word</a></p>
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<title><![CDATA[Your fart's carbon footprint]]></title>
<link>http://wastingtimewithmikeandari.wordpress.com/?p=822</link>
<pubDate>Sun, 27 Jul 2008 13:00:33 +0000</pubDate>
<dc:creator>diarrheaBot</dc:creator>
<guid>http://wastingtimewithmikeandari.wordpress.com/?p=822</guid>
<description><![CDATA[According to Elgood (2007), humans produce up to 1.5 liters of gas per day.  I&#8217;m assuming all]]></description>
<content:encoded><![CDATA[<p>According to <a href="http://www.science.uwaterloo.ca/WWSEF/07Awards/2007ReportElgoodZach.pdf" target="_blank">Elgood (2007)</a>, humans produce up to 1.5 liters of gas per day.  I'm assuming all gas volume figures in this post are at standard atmospheric pressure.</p>
<p>According to <a href="http://www.britannica.com/EBchecked/topic/1081754/human-digestive-system#294193.hook" target="_blank">Britanica</a>, up to 10% of your farts are methane (not mentioned if by weight or by volume, I'm assuming volume), which makes .15 liters of methane per day.</p>
<p>Which means at <a href="http://en.wikipedia.org/wiki/Methane" target="_blank">717 gram/liter</a>, you fart up to 110 grams of methane per day.</p>
<p>According to the Intergovenmental Panel on Climate change, <a href="http://www.grida.no/climate/ipcc_tar/wg1/248.htm" target="_blank">methane is about 23 times as potent a greenhouse gas as compared to carbon dioxide</a>.</p>
<p>That brings us to the carbon equivalent of almost 2.5 kilos of CO2 per day just from farting.</p>
<p>Now, being that the <a href="http://www.hybridsynergydrive.com/en/prius_emissions.html" target="_blank">CO2 emissions of a Prius are 104 gram/kilometer</a>, that means that just by sequestering your farts, you would reduce your greenhouse footprint enough to offset driving 20 kilometers in a Prius per day.</p>
<p>And now you know.</p>
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<title><![CDATA[Greenhouse gasses: C02 is negligible]]></title>
<link>http://kevinbferguson.wordpress.com/?p=39</link>
<pubDate>Sat, 26 Jul 2008 02:36:50 +0000</pubDate>
<dc:creator>Kevin</dc:creator>
<guid>http://kevinbferguson.wordpress.com/?p=39</guid>
<description><![CDATA[http://www.geocraft.com/WVFossils/greenhouse_data.html
Water Vapor Rules the Greenhouse System
Just ]]></description>
<content:encoded><![CDATA[<p><a href="http://www.geocraft.com/WVFossils/greenhouse_data.html">http://www.geocraft.com/WVFossils/greenhouse_data.html</a></p>
<h4><span style="font-size:x-small;color:#800000;font-family:Arial;">Water Vapor Rules </span><span style="font-size:x-small;color:#800000;font-family:Arial;">the Greenhouse System</span></h4>
<p><strong><span style="font-size:small;color:#800000;font-family:Arial;">J</span><span style="font-family:Arial;">ust how much of the </span><span style="color:#008000;font-family:Arial;">"Greenhouse Effect"</span><span style="font-family:Arial;"> is caused by human activity?</span></strong></p>
<p><span style="font-family:Arial;">It is about <strong>0.28%, </strong>if <strong>water vapor</strong> is taken into account-- about <strong>5.53%</strong>, if not.</span></p>
<p><span style="font-family:Arial;">This point is so crucial to the debate over global warming that how <strong>water vapor is</strong> or</span><span style="font-size:xx-small;font-family:Arial;"> </span><strong><span style="font-family:Arial;">isn't</span></strong><span style="font-family:Arial;"> factored into an analysis of Earth's greenhouse gases makes the difference between describing a <strong><em>significant</em></strong> human contribution to the greenhouse effect, or a <strong><em>negligible</em></strong> one.</span></p>
<p><span style="font-family:Arial;"><img src="http://www.geocraft.com/WVFossils/PageMill_Images/image270f.gif" alt="" width="363" height="323" align="left" /><strong>Water vapor</strong> constitutes Earth's most significant </span><strong><span style="color:#008000;font-family:Arial;">greenhouse gas</span></strong><span style="font-family:Arial;">, accounting for about<strong> 95%</strong> <strong>of Earth's greenhouse effect</strong> </span><strong><span style="font-family:Arial;">(4)</span></strong><span style="font-family:Arial;">. Interestingly, many "facts and figures' regarding global warming completely ignore the powerful effects of water vapor in the greenhouse system, carelessly (perhaps, deliberately) overstating human impacts as much as 20-fold.</span></p>
<p><strong><span style="font-family:Arial;">Water vapor</span></strong><span style="font-family:Arial;"> is <strong>99.999% of natural origin.</strong> Other atmospheric greenhouse gases, </span><strong><span style="color:#0000a0;font-family:Arial;">carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), and miscellaneous other gases (CFC's, etc.)</span></strong><span style="font-family:Arial;">, are also mostly of natural origin (except for the latter, which is mostly anthropogenic).</span></p>
<p><span style="font-family:Arial;">Human activites contribute slightly to greenhouse gas concentrations through <strong>farming, manufacturing, power generation, and transportation</strong>. However, these emissions are so dwarfed in comparison to emissions from natural sources we can do nothing about, that even the most costly efforts to limit human emissions would have a very small-- perhaps undetectable-- effect on global climate.</span></p>
<p><span style="font-family:Arial;">For those interested in more details a series of <strong>data sets</strong> and <strong>charts</strong> have been assembled below in a 5-step statistical synopsis.</span></p>
<p><span style="font-family:Arial;">Note that the first two steps ignore <strong>water vapor</strong>.</span></p>
<blockquote><p><strong><span style="font-size:xx-small;font-family:Arial;"><img src="http://www.geocraft.com/WVFossils/PageMill_Images/bullet_black.gif" border="0" alt="" width="23" height="13" align="bottom" />1.</span></strong><span style="font-size:xx-small;font-family:Arial;"> </span><span style="font-size:xx-small;color:#800000;font-family:Arial;">Greenhouse gas concentrations</span></p>
<p><strong><span style="font-size:xx-small;font-family:Arial;"><img src="http://www.geocraft.com/WVFossils/PageMill_Images/bullet_black.gif" border="0" alt="" width="23" height="13" align="bottom" />2.</span></strong><span style="font-size:xx-small;font-family:Arial;"> </span><span style="font-size:xx-small;color:#800000;font-family:Arial;">Converting</span><strong><span style="font-size:xx-small;font-family:Arial;"> </span></strong><span style="font-size:xx-small;color:#0000ff;font-family:Arial;">concentrations</span><span style="font-size:xx-small;font-family:Arial;"> </span><span style="font-size:xx-small;color:#800000;font-family:Arial;">to </span><span style="font-size:xx-small;color:#ff0000;font-family:Arial;">contribution</span><span style="font-size:xx-small;font-family:Arial;"> </span></p>
<p><strong><span style="font-size:xx-small;font-family:Arial;"><img src="http://www.geocraft.com/WVFossils/PageMill_Images/bullet_black.gif" border="0" alt="" width="23" height="13" align="bottom" />3.</span></strong><span style="font-size:xx-small;font-family:Arial;"> </span><span style="font-size:xx-small;color:#800000;font-family:Arial;">Factoring in water vapor</span></p>
<p><strong><span style="font-size:xx-small;font-family:Arial;"><img src="http://www.geocraft.com/WVFossils/PageMill_Images/bullet_black.gif" border="0" alt="" width="23" height="13" align="bottom" />4.</span></strong><span style="font-size:xx-small;font-family:Arial;"> </span><span style="font-size:xx-small;color:#800000;font-family:Arial;">Distinguishing natural vs man-made greenhouse gases</span></p>
<p><strong><span style="font-size:xx-small;font-family:Arial;"><img src="http://www.geocraft.com/WVFossils/PageMill_Images/bullet_black.gif" border="0" alt="" width="23" height="13" align="bottom" />5.</span></strong><span style="font-size:xx-small;font-family:Arial;"> </span><span style="font-size:xx-small;color:#800000;font-family:Arial;">Putting it all together</span></p></blockquote>
<p><strong><em><span style="font-family:Arial;">Note: </span></em></strong><em><span style="font-family:Arial;">Calculations are expressed to 3 significant digits to reduce rounding errors, not necessarily to indicate statistical precision of the data. All charts were plotted using Lotus 1-2-3.</span></em></p>
<p><strong><em><span style="font-family:Arial;">Caveat:</span></em></strong><em><span style="font-family:Arial;"> This analysis is intended to provide a simplified comparison of the various man-made and natural greenhouse gases on an equal basis with each other. It does not take into account all of the complicated interactions between atmosphere, ocean, and terrestrial systems, a feat which can only be accomplished by better computer models than are currently in use.</span></em></p>
<hr /><span style="font-size:x-small;color:#800000;font-family:Arial;">Greenhouse Gas Concentrations: </span><span style="font-size:xx-small;font-family:Arial;"><br />
Natural vs man-made (anthropogenic)</span></p>
<p><strong><span style="font-size:small;color:#800000;font-family:Arial;">1. </span></strong><span style="font-family:Arial;">The following table was constructed from data published by the U.S. Department of Energy </span><strong><span style="font-family:Arial;">(1) </span></strong><span style="font-family:Arial;">and other sources</span><strong><span style="font-family:Arial;">,</span></strong><span style="font-family:Arial;"> summarizing concentrations of the various atmospheric greenhouse gases. Because some of the concentrations are very small the numbers are stated in parts <em>per billion</em>. <strong>DOE chose to NOT show water vapor as a greenhouse gas!</strong></span></p>
<p><img src="http://www.geocraft.com/WVFossils/PageMill_Images/bullet_black.gif" alt="" width="23" height="13" align="bottom" />2.12 Gt C = ~7.8 Gt CO2 = 1ppmv CO2</p>
<p><strong>TABLE 1.</strong> </p>
<p><strong>The Important Greenhouse Gases (except water vapor)</strong><br />
<strong>U.S. Department of Energy, (October, 2000) <span>(1)</span></strong></p>
<table style="height:181px;" border="1" cellspacing="1" cellpadding="1" width="599">
<tbody>
<tr>
<td width="36%" height="44"><span>(all concentrations expressed in parts per billion)</span></td>
<td width="14%" height="44" align="center">Pre-industrial baseline</td>
<td width="10%" height="44" align="center">Natural additions</td>
<td width="12%" height="44" align="center">Man-made additions</td>
<td width="15%" height="44" align="center">Total (ppb) <span style="color:#0000ff;">Concentration</span></td>
<td width="13%" height="44" align="center">Percent of Total</td>
</tr>
<tr>
<td width="36%" height="24"> Carbon Dioxide (CO2)</td>
<td width="14%" height="24" align="right"> 288,000</td>
<td width="10%" height="24" align="right">68,520 </td>
<td width="12%" height="24" align="right">11,880 </td>
<td width="15%" height="24" align="right">368,400 </td>
<td width="13%" height="24" align="right"><strong><span style="color:#0000ff;">99.438%</span></strong> </td>
</tr>
<tr>
<td width="36%" height="24"> Methane (CH4)</td>
<td width="14%" height="24" align="right"> 848</td>
<td width="10%" height="24" align="right">577 </td>
<td width="12%" height="24" align="right">320 </td>
<td width="15%" height="24" align="right">1,745 </td>
<td width="13%" height="24" align="right"><strong><span style="color:#0000ff;">0.471%</span> </strong></td>
</tr>
<tr>
<td width="36%" height="24"> Nitrous Oxide (N2O)</td>
<td width="14%" height="24" align="right"> 285</td>
<td width="10%" height="24" align="right">12 </td>
<td width="12%" height="24" align="right">15 </td>
<td width="15%" height="24" align="right">312 </td>
<td width="13%" height="24" align="right"><strong><span style="color:#0000ff;">0.084%</span></strong> </td>
</tr>
<tr>
<td width="36%" height="24"> Misc. gases ( CFC's, etc.)</td>
<td width="14%" height="24" align="right"> 25</td>
<td width="10%" height="24" align="right">0 </td>
<td width="12%" height="24" align="right">2</td>
<td width="15%" height="24" align="right">27 </td>
<td width="13%" height="24" align="right"><strong><span style="color:#0000ff;">0.007%</span></strong> </td>
</tr>
<tr>
<td width="36%" height="24" align="center"> Total</td>
<td width="14%" height="24" align="right"> 289,158</td>
<td width="10%" height="24" align="right">69,109 </td>
<td width="12%" height="24" align="right">12,217 </td>
<td width="15%" height="24" align="right">370,484 </td>
<td width="13%" height="24" align="right">100.00% </td>
</tr>
</tbody>
</table>
<p> </p>
<blockquote><p><span style="font-family:Arial;"><img src="http://www.geocraft.com/WVFossils/PageMill_Images/image267.gif" alt="" width="329" height="306" align="left" />The chart at left summarizes the % of </span><strong><span style="color:#008000;font-family:Arial;">greenhouse gas</span></strong><span style="font-family:Arial;"> <strong>concentrations</strong> in Earth's atmosphere from <strong>Table 1</strong>. This is not a very meaningful view though because 1) the data has not been corrected for the actual <strong>Global Warming Potential</strong> (GWP) of each gas, and 2) <strong>water vapor</strong> is ignored.</span></p>
<p><span style="font-family:Arial;">But these are the numbers one would use if the goal is to exaggerate human greenhouse contributions:</span></p>
<p><span style="font-family:Arial;"><img src="http://www.geocraft.com/WVFossils/PageMill_Images/bullet_pin1.gif" alt="" width="14" height="14" align="bottom" /> Man-made and natural <strong>carbon dioxide (CO2)</strong> comprises <strong>99.44%</strong> of all greenhouse gas </span><span style="color:#0000ff;font-family:Arial;">concentrations</span><span style="font-family:Arial;"> (368,400 / 370,484 )--(ignoring </span><strong><span style="color:#663300;font-family:Arial;">water vapor</span></strong><span style="font-family:Arial;">).</span></p>
<p><span style="font-family:Arial;">Also, from <strong>Table 1</strong> (but not shown on graph):</span></p>
<p><span style="font-family:Arial;"><img src="http://www.geocraft.com/WVFossils/PageMill_Images/bullet_pin1.gif" alt="" width="14" height="14" align="bottom" /> <strong>Anthropogenic </strong>(man-made)<strong> CO2</strong> additions comprise (11,880 / 370,484) or <strong>3.207%</strong> of all greenhouse gas </span><span style="color:#0000ff;font-family:Arial;">concentrations,</span><span style="font-family:Arial;"> (ignoring </span><strong><span style="color:#663300;font-family:Arial;">water vapor</span></strong><span style="font-family:Arial;">).</span></p>
<p><span style="font-family:Arial;"><img src="http://www.geocraft.com/WVFossils/PageMill_Images/bullet_pin1.gif" alt="" width="14" height="14" align="bottom" /> <strong>Total combined <em>anthropogenic</em></strong> <strong>greenhouse gases</strong> comprise<strong> </strong>(12,217 / 370,484) or <strong>3.298% </strong>of all greenhouse gas </span><span style="color:#0000ff;font-family:Arial;">concentrations, </span><span style="font-family:Arial;">(ignoring </span><strong><span style="color:#663300;font-family:Arial;">water vapor</span></strong><span style="font-family:Arial;">).</span></p>
<p><span style="font-family:Arial;">The various greenhouse gases are <strong>not equal</strong> in their heat-retention properties though, so to remain statistically relevant <strong><em>% </em></strong></span><strong><em><span style="color:#0000ff;font-family:Arial;">concentrations</span></em></strong><span style="color:#0000ff;font-family:Arial;"> </span><span style="font-family:Arial;">must be changed to <strong><em>% </em></strong></span><strong><em><span style="color:#ff0000;font-family:Arial;">contribution</span></em></strong><span style="color:#ff0000;font-family:Arial;"> </span><span style="font-family:Arial;">relative to CO2. This is done in <strong>Table 2</strong>, below, through the use of GWP <strong>multipliers</strong> for each gas, derived by various researchers.</span></p>
<div></div>
<p><span style="font-family:Arial;"><br />
<hr /></span><span style="font-size:x-small;color:#800000;font-family:Arial;">Converting greenhouse gas</span><span style="font-family:Arial;"> </span><strong><span style="font-size:x-small;color:#0000ff;font-family:Arial;">concentrations</span></strong><span style="font-size:x-small;font-family:Arial;"> </span><span style="font-family:Arial;"><br />
</span><span style="font-size:x-small;color:#800000;font-family:Arial;">to greenhouse effect</span><span style="font-size:x-small;color:#0000ff;font-family:Arial;"> </span><strong><span style="font-size:x-small;color:#ff0000;font-family:Arial;">contribution</span></strong><span style="font-size:xx-small;font-family:Arial;"><br />
(using <em>global warming potential</em> )</span></p>
<p><strong><span style="font-size:small;color:#800000;font-family:Arial;">2. </span></strong><span style="font-family:Arial;">Using appropriate corrections for the <strong>Global Warming Potential </strong>of the respective gases provides the following more meaningful comparison of greenhouse gases, based on the conversion:</span></p>
<p><strong><span style="font-family:Arial;">( </span><em><span style="color:#0000ff;font-family:Arial;">concentration </span></em><span style="font-family:Arial;">)</span></strong><span style="font-family:Arial;"> </span><strong><span style="font-size:xx-small;font-family:Arial;">X</span></strong><span style="font-family:Arial;"> <strong>(</strong> the appropriate GWP <strong>multiplier </strong></span><strong><span style="font-family:Arial;">(2) (3) </span></strong><span style="font-family:Arial;">of each gas relative to CO2 <strong>)</strong> </span><strong><span style="font-size:xx-small;font-family:Arial;">= </span><span style="font-family:Arial;">greenhouse </span><em><span style="color:#ff0000;font-family:Arial;">contribution</span></em></strong><span style="color:#ff0000;font-family:Arial;">.:</span> </p></blockquote>
<p><strong>TABLE 2.</strong> </p>
<p><strong>Atmospheric Greenhouse Gases (except water vapor)<br />
adjusted for heat retention characteristics, relative to CO2</strong> </p>
<table style="height:214px;" border="1" cellspacing="1" cellpadding="1" width="654">
<tbody>
<tr>
<td width="30%" height="74"><span>This table adjusts values in <strong>Table 1</strong> to compare greenhouse gases equally with respect to CO2. ( #'s are unit-less)</span></td>
<td width="11%" height="74" align="center"><strong>Multiplier (GWP)</strong></td>
<td width="14%" height="74" align="center">Pre-industrial baseline(new)</td>
<td width="9%" height="74" align="center">Natural additions (new)</td>
<td width="11%" height="74" align="center">Man-made additions (new)</td>
<td width="13%" height="74" align="center">Tot. Relative <span style="color:#ff0000;">Contribution</span></td>
<td width="12%" height="74" align="center">Percent of Total (new)</td>
</tr>
<tr>
<td width="30%" height="26">Carbon Dioxide (CO2)</td>
<td width="11%" height="26" align="right"> 1</td>
<td width="14%" height="26" align="right"> 288,000</td>
<td width="9%" height="26" align="right">68,520 </td>
<td width="11%" height="26" align="right">11,880 </td>
<td width="13%" height="26" align="right">368,400 </td>
<td width="12%" height="26" align="right"><strong><span style="color:#ff0000;">72.369%</span></strong><span style="color:#ff0000;"> </span></td>
</tr>
<tr>
<td width="30%" height="26">Methane (CH4)</td>
<td width="11%" height="26" align="right"> 21 <strong><span>(2)</span></strong></td>
<td width="14%" height="26" align="right"> 17,808</td>
<td width="9%" height="26" align="right">12,117 </td>
<td width="11%" height="26" align="right">6,720 </td>
<td width="13%" height="26" align="right">36,645 </td>
<td width="12%" height="26" align="right"><strong><span style="color:#ff0000;">7.199%</span></strong><span style="color:#ff0000;"> </span></td>
</tr>
<tr>
<td width="30%" height="26">Nitrous Oxide (N2O)</td>
<td width="11%" height="26" align="right"> 310 <strong><span>(2)</span></strong></td>
<td width="14%" height="26" align="right">88,350</td>
<td width="9%" height="26" align="right">3,599</td>
<td width="11%" height="26" align="right">4,771 </td>
<td width="13%" height="26" align="right">96,720 </td>
<td width="12%" height="26" align="right"><strong><span style="color:#ff0000;">19.000%</span></strong><span style="color:#ff0000;"> </span></td>
</tr>
<tr>
<td width="30%" height="26"> <a href="http://www.geocraft.com/WVFossils/greenhouse_data_T2b.html">CFC's (and other misc. gases)</a></td>
<td width="11%" height="26" align="right"><a href="http://www.geocraft.com/WVFossils/greenhouse_data_T2b.html">see data</a> <strong><span>(3)</span></strong></td>
<td width="14%" height="26" align="right">2,500</td>
<td width="9%" height="26" align="right">0 </td>
<td width="11%" height="26" align="right">4,791 </td>
<td width="13%" height="26" align="right">7,291 </td>
<td width="12%" height="26" align="right"><strong><span style="color:#ff0000;">1.432%</span></strong><span style="color:#ff0000;"> </span></td>
</tr>
<tr>
<td width="30%" height="26" align="center"> Total</td>
<td width="11%" height="26" align="right"> </td>
<td width="14%" height="26" align="right">396,658</td>
<td width="9%" height="26" align="right">84,236</td>
<td width="11%" height="26" align="right">28,162 </td>
<td width="13%" height="26" align="right">509,056 </td>
<td width="12%" height="26" align="right">100.000% </td>
</tr>
</tbody>
</table>
<p><strong>NOTE:</strong> GWP (Global Warming Potential) is used to contrast different greenhouse gases relative to CO2.</p>
<blockquote><p><img src="http://www.geocraft.com/WVFossils/PageMill_Images/image268.gif" alt="" width="321" height="306" align="left" /><span style="font-family:Arial;">Compared to the </span><span style="color:#0000ff;font-family:Arial;">concentration</span><span style="font-family:Arial;"> statistics in <strong>Table 1</strong>, the GWP comparison in <strong>Table 2</strong> illustrates, among other things:</span></p>
<p><span style="font-family:Arial;"><img src="http://www.geocraft.com/WVFossils/PageMill_Images/bullet_pin1.gif" alt="" width="14" height="14" align="bottom" /> Total <strong>carbon dioxide (CO2)</strong> </span><span style="color:#ff0000;font-family:Arial;">contributions </span><span style="font-family:Arial;">are reduced to <strong>72.37%</strong> of all greenhouse gases (368,400 / 509,056)-- (ignoring </span><strong><span style="color:#663300;font-family:Arial;">water vapor</span></strong><span style="font-family:Arial;">).</span></p>
<p><span style="font-family:Arial;">Also, from <strong>Table 2</strong> (but not shown on graph):</span></p>
<p><span style="font-family:Arial;"><img src="http://www.geocraft.com/WVFossils/PageMill_Images/bullet_pin1.gif" alt="" width="14" height="14" align="bottom" /> <strong>Anthropogenic </strong>(man-made)<strong> CO2</strong> </span><span style="color:#ff0000;font-family:Arial;">contributions </span><span style="font-family:Arial;">drop to (11,880 / 509,056) or <strong>2.33%</strong> of total of all greenhouse gases, (ignoring </span><strong><span style="color:#663300;font-family:Arial;">water vapor</span></strong><span style="font-family:Arial;">).</span></p>
<p><span style="font-family:Arial;"><img src="http://www.geocraft.com/WVFossils/PageMill_Images/bullet_pin1.gif" alt="" width="14" height="14" align="bottom" /> <strong>Total combined <em>anthropogenic</em> greenhouse gases</strong> becomes<strong> </strong>(28,162 / 509,056) or <strong>5.53% </strong>of all greenhouse gas </span><span style="color:#ff0000;font-family:Arial;">contributions,</span><span style="color:#0000ff;font-family:Arial;"> </span><span style="font-family:Arial;">(ignoring </span><strong><span style="color:#663300;font-family:Arial;">water vapor</span></strong><span style="font-family:Arial;">).</span></p>
<p><span style="font-family:Arial;"><img src="http://www.geocraft.com/WVFossils/PageMill_Images/bullet_pin1.gif" alt="" width="14" height="14" align="bottom" />Relative to <strong>carbon dioxide</strong> the other greenhouse gases together comprise about <strong>27.63%</strong> of the greenhouse effect (ignoring </span><strong><span style="color:#663300;font-family:Arial;">water vapor</span></strong><span style="font-family:Arial;">) but only about <strong>0.56%</strong> of total greenhouse gas <em>concentrations</em>. Put another way, as a group </span><span style="color:#0000a0;font-family:Arial;">methane, nitrous oxide (N2O)</span><span style="font-family:Arial;">, and <a href="http://www.geocraft.com/WVFossils/greenhouse_data_T2b.html">CFC's and other miscellaneous gases</a> are about <strong>50 times more potent</strong> than CO2 as greenhouse gases.</span></p>
<p><span style="font-family:Arial;">To properly represent the <strong>total relative impacts </strong>of Earth's </span><span style="color:#006600;font-family:Arial;">greenhouse gases</span><span style="font-family:Arial;"> <strong>Table 3</strong> (below) factors in the effect of <strong>water vapor</strong> on the system.</span></p>
<div></div>
<p><span style="font-family:Arial;"><br />
<hr /></span><strong><span style="font-size:x-small;color:#800000;font-family:Arial;">Water vapor</span></strong><span style="font-size:x-small;color:#800000;font-family:Arial;"> overwhelms</span><span style="font-size:xx-small;font-family:Arial;"><br />
</span><span style="font-size:x-small;color:#800000;font-family:Arial;">all other natural and man-made<br />
greenhouse<strong> </strong></span><strong><span style="font-size:x-small;color:#ff0000;font-family:Arial;">contributions</span></strong><span style="font-size:x-small;font-family:Arial;">.</span></p>
<p><strong><span style="font-size:small;color:#800000;font-family:Arial;">3. </span><span style="font-family:Arial;">Table 3</span></strong><span style="font-family:Arial;">, shows what happens when the effect of </span><strong><span style="color:#663300;font-family:Arial;">water vapor</span><span style="font-family:Arial;"> is factored in,</span></strong><span style="font-family:Arial;"> and together with all other greenhouse gases expressed as a relative % of the total greenhouse effect.</span></p></blockquote>
<p><strong>TABLE 3.</strong> </p>
<p><strong>Role of Atmospheric Greenhouse Gases </strong><br />
<strong>(man-made and natural) as a % of Relative<br />
Contribution to the "Greenhouse Effect"</strong> </p>
<table style="height:225px;" border="1" cellspacing="1" cellpadding="1" width="360">
<tbody>
<tr>
<td width="30%" height="44"><span>Based on concentrations (ppb) adjusted for heat retention characteristics</span></td>
<td width="12%" height="44" align="center">Percent of Total</td>
<td height="44" align="center"> Percent of Total --adjusted for <strong><span style="color:#000000;">water vapor</span></strong></td>
</tr>
<tr>
<td width="30%"><span style="color:#ff0099;"> </span><strong><span style="color:#000000;">Water vapor</span></strong></td>
<td width="12%" align="center"> -----</td>
<td align="right"><strong> 95.000%</strong></td>
</tr>
<tr>
<td width="30%" height="24"> Carbon Dioxide (CO2)</td>
<td width="12%" height="24" align="right">72.369% </td>
<td height="24" align="right"><strong> 3.618%</strong></td>
</tr>
<tr>
<td width="30%" height="24"> Methane (CH4)</td>
<td width="12%" height="24" align="right">7.100% </td>
<td height="24" align="right"><strong> 0.360%</strong></td>
</tr>
<tr>
<td width="30%" height="24">Nitrous oxide (N2O)</td>
<td width="12%" height="24" align="right">19.000% </td>
<td height="24" align="right"> <strong>0.950%</strong></td>
</tr>
<tr>
<td width="30%" height="24"> CFC's (and other misc. gases)</td>
<td width="12%" height="24" align="right">1.432% </td>
<td height="24" align="right"><strong> 0.072%</strong></td>
</tr>
<tr>
<td width="30%" height="24" align="center"> Total</td>
<td width="12%" height="24" align="right">100.000% </td>
<td height="24" align="right"> <strong>100.000%</strong></td>
</tr>
</tbody>
</table>
<p> </p>
<blockquote><p><img src="http://www.geocraft.com/WVFossils/PageMill_Images/image269.gif" alt="" width="368" height="304" align="left" /><span style="font-family:Arial;">As illustrated in this chart of the data in <strong>Table 3</strong>, the combined <strong>greenhouse contributions</strong> <strong>of </strong></span><strong><span style="color:#0000a0;font-family:Arial;">CO2, methane, N2O and misc. gases</span><span style="font-family:Arial;"> </span></strong><span style="font-family:Arial;">are small compared to<strong> water vapor</strong>!</span></p>
<p><strong><span style="font-family:Arial;">Total atmospheric carbon dioxide (CO2) -- both man-made and natural-- is only about 3.62% of the overall </span><span style="color:#008000;font-family:Arial;">greenhouse effect</span></strong><span style="font-family:Arial;">-- a big difference from the 72.37% figure in <strong>Table 2</strong>, which ignored water!</span></p>
<p><strong><span style="font-family:Arial;">Water vapor</span></strong><span style="font-family:Arial;">, the most significant greenhouse gas, comes from natural sources and is responsible for roughly<strong> 95% of the greenhouse effect</strong> </span><strong><span style="font-family:Arial;">(4)</span></strong><span style="font-family:Arial;">. Among climatologists this is common knowledge but among special interests, certain governmental groups, and news reporters this fact is under-emphasized or just ignored altogether.</span></p>
<p><span style="font-family:Arial;">Conceding that it might be "a little misleading" to leave water vapor out, they nonetheless defend the practice by stating that it is "customary" to do so!</span></p>
<div></div>
<p><span style="font-family:Arial;"><br />
<hr /></span></p></blockquote>
<blockquote><p><span style="font-size:x-small;color:#800000;font-family:Arial;">Comparing natural vs man-made</span><span style="font-family:Arial;"> </span><strong><span style="font-size:x-small;color:#0000ff;font-family:Arial;">concentrations</span></strong><span style="font-size:x-small;font-family:Arial;"> </span><span style="font-family:Arial;"><br />
</span><span style="font-size:x-small;color:#800000;font-family:Arial;">of greenhouse gases</span></p>
<p><strong><span style="font-size:small;color:#800000;font-family:Arial;">4. </span></strong><span style="font-family:Arial;">Of course, even among the remaining 5% of <strong><em>non-water vapor </em></strong>greenhouse gases, humans contribute only a very small part (and human contributions to water vapor are negligible).</span></p>
<p><span style="font-family:Arial;">Constructed from data in <strong>Table 1,</strong> the charts (below) illustrate graphically how much of each greenhouse gas is <strong>natural</strong> vs how much is <strong>man-made</strong>. These allocations are used for the next and final step in this analysis-- total man-made contributions to the greenhouse effect. Units are expressed to 3 significant digits in order to reduce rounding errors for those who wish to walk through the calculations, not to imply numerical precision as there is some variation among various researchers.</span></p>
<p><img src="http://www.geocraft.com/WVFossils/PageMill_Images/image270a.gif" alt="" width="257" height="224" align="bottom" /><img src="http://www.geocraft.com/WVFossils/PageMill_Images/image270b.gif" alt="" width="257" height="225" align="bottom" /><img src="http://www.geocraft.com/WVFossils/PageMill_Images/image270c.gif" alt="" width="257" height="225" align="bottom" /><img src="http://www.geocraft.com/WVFossils/PageMill_Images/image270d.gif" alt="" width="257" height="225" align="bottom" /><img src="http://www.geocraft.com/WVFossils/PageMill_Images/image270e.gif" alt="" width="258" height="225" align="bottom" /></p>
<hr /> <strong><span style="font-size:x-small;color:#800000;font-family:Arial;">Putting it all together:</span></strong><span style="font-size:x-small;font-family:Arial;"> </span><span style="font-family:Arial;"><br />
</span><span style="font-size:x-small;color:#800000;font-family:Arial;">total human greenhouse gas</span><span style="font-size:x-small;font-family:Arial;"> </span><strong><span style="font-size:x-small;color:#ff0000;font-family:Arial;">contributions</span></strong><span style="font-size:x-small;font-family:Arial;"> </span><span style="font-family:Arial;"><br />
</span><span style="font-size:x-small;color:#800000;font-family:Arial;">add up to about <strong>0.28%</strong> of the</span><span style="font-size:x-small;font-family:Arial;"> </span><strong><span style="font-size:x-small;color:#006600;font-family:Arial;">greenhouse effect</span></strong><span style="font-size:x-small;font-family:Arial;">.</span><strong><span style="font-size:small;color:#800000;font-family:Arial;">5. </span></strong><span style="font-family:Arial;">To finish with the math, by calculating the product of the adjusted CO2 contribution to greenhouse gases (3.618%) and % of CO2 concentration from anthropogenic (man-made) sources (3.225%), we see that only (0.03618 X 0.03225) or <strong>0.117% of the greenhouse effect is due to atmospheric CO2 from human activity</strong>. The other greenhouse gases are similarly calculated and are summarized below.</span></p>
<p><a name="anchor247575"></a><strong>TABLE 4a.</strong> </p>
<p><strong>Anthropogenic (</strong>man-made<strong>) Contribution to the "Greenhouse</strong><br />
<strong>Effect," expressed as % of Total (<span style="color:#000080;">water vapor INCLUDED</span>)</strong></p>
<table style="height:231px;" border="1" cellspacing="1" cellpadding="1" width="449">
<tbody>
<tr>
<td width="18%" height="68"><span>Based on concentrations (ppb) adjusted for heat retention characteristics</span></td>
<td width="17%" height="68" align="center"> % of All Greenhouse Gases</td>
<td width="22%" height="68"> % Natural</td>
<td width="20%" height="68"> % Man-made</td>
</tr>
<tr>
<td width="18%" height="26"> Water vapor</td>
<td width="17%" height="26" align="right">95.000% </td>
<td width="22%" height="26">
<p align="right"> 94.999%</p>
</td>
<td width="20%" height="26" align="right"><strong>0.001%</strong> </td>
</tr>
<tr>
<td width="18%" height="26"> Carbon Dioxide (CO2)</td>
<td width="17%" height="26" align="right">3.618% </td>
<td width="22%" height="26">
<p align="right"> 3.502%</p>
</td>
<td width="20%" height="26" align="right"><strong>0.117%</strong> </td>
</tr>
<tr>
<td width="18%" height="26"> Methane (CH4)</td>
<td width="17%" height="26" align="right">0.360% </td>
<td width="22%" height="26">
<p align="right"> 0.294%</p>
</td>
<td width="20%" height="26" align="right"><strong>0.066% </strong></td>
</tr>
<tr>
<td width="18%" height="26"> Nitrous Oxide (N2O)</td>
<td width="17%" height="26" align="right">0.950% </td>
<td width="22%" height="26">
<p align="right"> 0.903%</p>
</td>
<td width="20%" height="26" align="right"><strong>0.047%</strong> </td>
</tr>
<tr>
<td width="18%" height="26"> Misc. gases ( CFC's, etc.)</td>
<td width="17%" height="26" align="right">0.072% </td>
<td width="22%" height="26">
<p align="right"> 0.025%</p>
</td>
<td width="20%" height="26" align="right"><strong>0.047%</strong> </td>
</tr>
<tr>
<td width="18%" height="26" align="right"> Total</td>
<td width="17%" height="26" align="right">100.00% </td>
<td width="22%" height="26">
<p align="right"> <strong>99.72</strong></p>
</td>
<td width="20%" height="26" align="right"><strong>0.28%</strong> </td>
</tr>
</tbody>
</table>
<p> </p>
<p><img src="http://www.geocraft.com/WVFossils/PageMill_Images/image270f.gif" alt="" width="363" height="323" align="left" /><span style="font-family:Arial;">This is the statistically correct way to represent relative human contributions to the greenhouse effect.</span></p>
<p><span style="font-family:Arial;">From <strong>Table 4a,</strong> both natural and man-made greenhouse contributions are illustrated in this chart, in gray and green, respectively. For clarity only the man-made (anthropogenic) contributions are labeled on the chart.</span></p>
<p><span style="font-family:Arial;"><img src="http://www.geocraft.com/WVFossils/PageMill_Images/bullet_pin1.gif" alt="" width="14" height="14" align="bottom" /> <strong>Water vapor</strong>, responsible for <strong>95%</strong> of Earth's greenhouse effect, is <strong>99.999% natural</strong> (some argue, 100%). Even if we wanted to we can do nothing to change this.</span></p>
<p><span style="font-family:Arial;"><img src="http://www.geocraft.com/WVFossils/PageMill_Images/bullet_pin1.gif" alt="" width="14" height="14" align="bottom" /> <strong>Anthropogenic </strong>(man-made)<strong> CO2</strong> </span><span style="color:#ff0000;font-family:Arial;">contributions</span><span style="font-family:Arial;"> cause only about <strong>0.117%</strong> of Earth's </span><strong><span style="color:#008000;font-family:Arial;">greenhouse effect</span></strong><span style="font-family:Arial;">, (factoring in </span><strong><span style="color:#663300;font-family:Arial;">water vapor</span></strong><span style="font-family:Arial;">). This is insignificant!</span></p>
<p><span style="font-family:Arial;"><img src="http://www.geocraft.com/WVFossils/PageMill_Images/bullet_pin1.gif" alt="" width="14" height="14" align="bottom" /> Adding up all <strong>anthropogenic</strong> greenhouse sources, the <strong>total human contribution to the greenhouse effect </strong>is around <strong>0.28%</strong></span><span style="color:#0000ff;font-family:Arial;"> </span><span style="font-family:Arial;">(factoring in </span><strong><span style="color:#663300;font-family:Arial;">water vapor</span></strong><span style="font-family:Arial;">).</span></p>
<p><strong><span style="font-size:small;color:#800000;font-family:Arial;">T</span></strong><span style="font-family:Arial;">he <strong>Kyoto Protocol</strong> calls for mandatory carbon dioxide reductions of 30% from developed countries like the U.S. Reducing man-made CO2 emissions this much would have an undetectable effect on climate while having a devastating effect on the U.S. economy. Can you drive your car 30% less, reduce your winter heating 30%? Pay 20-50% more for everything from automobiles to zippers? And that is just a down payment, with more sacrifices to come later.</span></p>
<p><span style="font-family:Arial;">Such drastic measures, even if imposed equally on all countries around the world, would reduce total <strong>human greenhouse contributions</strong> from CO2 by about <strong>0.035%</strong>.</span></p>
<p><span style="font-family:Arial;">This is much less than the natural variability of Earth's climate system!</span></p>
<p><span style="font-family:Arial;">While the greenhouse reductions would exact a high human price, in terms of sacrifices to our standard of living, they would yield statistically negligible results in terms of measurable impacts to climate change. There is no expectation that any statistically significant global warming reductions would come from the Kyoto Protocol.</span></p>
<div></div>
<p><span style="font-family:Arial;"><br />
<hr /><img src="http://www.geocraft.com/WVFossils/PageMill_Images/bullet_pin1.gif" alt="" width="14" height="14" align="bottom" /><strong>" There is no dispute at all about the fact that even if punctiliously observed, (the Kyoto Protocol) would have an imperceptible effect on future temperatures -- one-twentieth of a degree by 2050. "</strong></span><span style="font-family:Arial;"><br />
<strong>Dr. S. Fred Singer, </strong>atmospheric physicist<br />
Professor Emeritus of Environmental Sciences at the University of Virginia,<br />
and former director of the US Weather Satellite Service;<br />
in a Sept. 10, 2001 Letter to Editor, <cite><em>Wall Street Journal<br />
<hr /></em></cite></span><span style="font-size:x-small;color:#800000;font-family:Arial;">Research to Watch</span></p>
<p><span style="font-family:Arial;">Scientists are increasingly recognizing the importance of water vapor in the climate system. Some, like <a href="http://www.columbia.edu/cu/record21/record2128.14.html">Wallace Broecker</a>, a geochemist at Columbia's Lamont-Doherty Earth Observatory, suggest that it is such an important factor that much of the global warming in the last 10,000 years may be due to the increasing water vapor concentrations in Earth's atmosphere.</span></p>
<p><span style="font-family:Arial;">His research indicates that <strong>air reaching glaciers during the last Ice Age had less than half the water vapor content of today. </strong>Such increases in atmospheric moisture during our current <strong>interglacial period</strong> would have played a far greater role in global warming than carbon dioxide or other minor gases.</span></p>
<div></div>
<p><span style="font-family:Arial;"><br />
<hr /><img src="http://www.geocraft.com/WVFossils/PageMill_Images/bullet_pin1.gif" alt="" width="14" height="14" align="bottom" /></span><span style="font-family:Arial;">" <strong>I can only see one element of the climate system capable of generating these fast, global changes, that is, changes in the tropical atmosphere leading to changes in the inventory of the earth's most powerful greenhouse gas-- water vapor. "</strong></span><span style="font-family:Times New Roman;"> </span> </p>
<p><strong><span style="font-family:Arial;">Dr. Wallace Broecker</span></strong></p>
<div><span style="font-family:Arial;">, a leading world authority on climate<br />
Lamont-Doherty Earth Observatory, Columbia University,<br />
lecture presented at R. A. Daly Lecture at the American Geophysical Union's<br />
spring meeting in Baltimore, Md., May 1996.</span></div>
<p><span style="font-family:Arial;"><br />
<hr /></span><span style="font-family:Arial;">Known causes of global climate change, like cyclical eccentricities in <strong>Earth's rotation</strong> and <strong>orbit</strong>, as well as variations in the <strong>sun's energy output</strong>, are the primary causes of climate cycles measured over the last half million years. However, secondary greenhouse effects stemming from changes in the ability of a warming atmosphere to support greater concentrations of gases like water vapor and carbon dioxide also appear to play a significant role. As demonstrated in the data above, of all Earth's greenhouse gases, water vapor is by far the dominant player.</span></p>
<p><span style="font-family:Arial;">The ability of humans to influence greenhouse water vapor is negligible. As such, individuals and groups whose agenda it is to require that human beings are the cause of global warming must discount or ignore the effects of water vapor to preserve their arguments, citing numbers similar to those in <!--NOEDIT--><a href="http://www.geocraft.com/WVFossils/#anchor247575">Table 4b </a><!--/NOEDIT-->. If political correctness and staying out of trouble aren't high priorities for you, go ahead and ask them how <strong>water vapor</strong> was handled in their models or statistics. Chances are,<strong> it wasn't!</strong></span></p>
<hr /></blockquote>
<p>&#124;&#124; <a href="http://www.geocraft.com/WVFossils/ice_ages.html#anchor2108263">Global Warming</a> &#124;&#124; <a href="http://www.geocraft.com/WVFossils/TableOfCont.html">Table of Contents</a> &#124;&#124; </p>
<blockquote><p>References:</p>
<p>1) <a href="http://cdiac.esd.ornl.gov/pns/current_ghg.html">Current Greenhouse Gas Concentrations</a> (updated October, 2000)<br />
<strong>Carbon Dioxide Information Analysis Center</strong><br />
(the primary global-change data and information analysis center of the U.S. Department of Energy)<br />
Oak Ridge, Tennessee</p>
<p><strong>Greenhouse Gases and Climate Change</strong> (data now available only to "members")<br />
IEA Greenhouse Gas R&#38;D Programme,<br />
Stoke Orchard, Cheltenham, Gloucestershire, GL52 7RZ, United Kingdom.</p>
<p>2) <a href="http://yosemite.epa.gov/oar/globalwarming.nsf/UniqueKeyLookup/SHSU5BUM9T/$File/ghg_gwp.pdf">Greenhouse Gases and Global Warming Potentials</a> (updated April, 2002)<br />
<strong>U.S. Environmental Protection Agency</strong></p>
<p>3) <a href="http://www.c-f-c.com/gaslink/charts/warmingchart.htm">Warming Potentials of Halocarbons and Greenhouses Gases</a><br />
Chemical formulae and global warming potentials from Intergovernmental Panel on Climate Change, Climate Change 1995: The Science of Climate Change (Cambridge, UK: Cambridge University Press, 1996), pp. 119 and 121. Production and sales of CFC's and other chemicals from International Trade Commission, Synthetic Organic Chemicals: United States Production and Sales, 1994 (Washington, DC, 1995). TRI emissions from U.S. Environmental Protection Agency, 1994 Toxics Release Inventory: Public Data Release, EPA-745-R-94-001 (Washington, DC, June 1996), p. 73. Estimated 1994 U.S. emissions from U.S. Environmental Protection Agency, Inventory of U.S. Greenhouse Gas Emissions and Sinks, 1990-1994, EPA-230-R-96-006 (Washington, DC, November 1995), pp. 37-40.</p>
<p>4) References to 95% contribution of water vapor:</p>
<p>a. S.M. Freidenreich and V. Ramaswamy, “Solar Radiation Absorption by Carbon Dioxide, Overlap with Water, and a Parameterization for General Circulation Models,” Journal of Geophysical Research 98 (1993):7255-7264</p>
<p>b. <a href="http://www.geocraft.com/WVFossils/Reference_Docs/PMichaels_Jun98.pdf">Global Deception: The Exaggeration of the Global Warming Threat </a><img src="http://www.geocraft.com/WVFossils/PageMill_Images/pdf_logo.gif" alt="" width="30" height="28" align="middle" /><br />
by Dr. Patrick J. Michaels, June 1998<br />
Virginia State Climatologist and Professor of Environmental Sciences, University of Virginia</p>
<p>c. <a href="http://www.eia.doe.gov/cneaf/alternate/page/environment/appd_d.html">Greenhouse Gas Emissions, Appendix D, Greenhouse Gas Spectral Overlaps and Their Significance</a><br />
Energy Information Administration; Official Energy Statistics from the U.S. Government</p>
<p>d. Personal Communication-- Dr. Richard S. Lindzen<br />
Alfred P. Slone Professor of Meteorology, MIT</p>
<p>e. <a href="http://www.tcsdaily.com/article.aspx?id=010405M">The Geologic Record and Climate Change</a><br />
by Dr. Tim Patterson, January 2005<br />
Professor of Geology-- Carleton University<br />
Ottawa, Canada<br />
<a href="http://www.geocraft.com/WVFossils/Reference_Docs/The_Geologic_Record_and_Climate_Change.pdf">Alternate link</a>: <img src="http://www.geocraft.com/WVFossils/PageMill_Images/pdf_logo.gif" alt="" width="30" height="28" align="middle" /><br />
f. <a href="http://www.ecoenquirer.com/EPA-water-vapor.htm">EPA Seeks To Have Water Vapor Classified As A Pollutant</a><br />
by the <a href="http://www.ecoenquirer.com/">ecoEnquirer</a>, 2006<br />
<a href="http://www.geocraft.com/WVFossils/Reference_Docs/EPA_H2O_vapor_as_a_pollutant.pdf">Alternate link: </a><img src="http://www.geocraft.com/WVFossils/PageMill_Images/pdf_logo.gif" alt="" width="30" height="28" align="middle" /></p>
<p>g. <a href="http://www.freedom21.org/alternative/chapter3a.shtml">Air and Water Issues</a><br />
by <a href="http://www.freedom21.org/">Freedom 21.org</a>, 2005<br />
Citation: Bjorn Lomborg, p. 259. Also: Patrick Michaels and Robert Balling, Jr. The Satanic Gases, Clearing the Air About Global Warming (Washington, DC: CATO Institute, 2000), p. 25.</p>
<p>h.<a href="http://pubs.acs.org/subscribe/journals/ci/31/special/may01_viewpoint.html"> Does CO2 Really Drive Global Warming?</a><br />
by Dr. Robert Essenhigh, May 2001<br />
<a href="http://www.geocraft.com/WVFossils/Reference_Docs/essenhigh_may01_view.pdf">Alternate link: </a><img src="http://www.geocraft.com/WVFossils/PageMill_Images/pdf_logo.gif" alt="" width="30" height="28" align="middle" /></p>
<p>i. Solar Cycles, Not CO2, Determine Climate<br />
by Zbigniew Jaworowski, M.D., Ph.D., D.Sc., 21st Century Science and Technology, Winter 2003-2004, pp. 52-65<br />
<a href="http://www.geocraft.com/WVFossils/Reference_Docs/sci_and_techn-glacial_expansion_03-04.pdf">Link: </a><img src="http://www.geocraft.com/WVFossils/PageMill_Images/pdf_logo.gif" alt="" width="30" height="28" align="middle" /></p>
<p>5) <strong>Global Climate Change Student Guide</strong><br />
Department of Environmental and Geographical Sciences<br />
Manchester Metropolitan University<br />
Chester Street<br />
Manchester<br />
M1 5GD<br />
United Kingdom</p>
<p>6) <a href="http://chem-faculty.ucsd.edu/trogler/CurrentNitroWeb/Section5/Section6.shtm">Global Budgets for Atmospheric Nitrous Oxide - Anthropogenic Contributions</a><br />
William C. Trogler, Eric Bruner, Glenn Westwood, Barbara Sawrey, and Patrick Neill<br />
Department of Chemistry and Biochemistry<br />
University of California at San Diego, La Jolla, California</p>
<p>7) <a href="http://www.radix.net/~bobg/">Methane record and budget</a><br />
Robert Grumbine</p>
<p><strong><span style="font-size:xx-small;">Useful conversions:</span></strong></p>
<p><img src="http://www.geocraft.com/WVFossils/PageMill_Images/bullet_black.gif" alt="" width="23" height="13" align="bottom" />1 Gt = 1 billion tons = 1 cu. km. H20</p>
<p><img src="http://www.geocraft.com/WVFossils/PageMill_Images/bullet_black.gif" alt="" width="23" height="13" align="bottom" />1 Gt Carbon(C) = ~3.67 Gt Carbon Dioxide(CO2)</p></blockquote>
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<title><![CDATA[Managing China's per capita carbon emissions]]></title>
<link>http://eastasiaforum.wordpress.com/?p=338</link>
<pubDate>Fri, 25 Jul 2008 04:45:51 +0000</pubDate>
<dc:creator>Frank Jotzo</dc:creator>
<guid>http://eastasiaforum.wordpress.com/?p=338</guid>
<description><![CDATA[Author: Frank Jotzo
The challenges of international climate equity are well taken up by Yongsheng Zh]]></description>
<content:encoded><![CDATA[<p>Author: Frank Jotzo</p>
<p>The challenges of international climate equity are well taken up by Yongsheng Zhang in <a href="http://eastasiaforum.wordpress.com/2008/07/22/bush-wrong-on-india-and-china-and-climate-change/">this post</a>. He suggests that emissions rights may be allocated on an equal per capita basis. Indeed equal per capita seems the one simple principle that could cut work, because it could be acceptable to the majority of developing countries. A gradual transition from current levels to equal per capita levels would be necessary to strike the balance with interests of high-emitting countries. It's called 'contraction and convergence', because the global emissions budget contracts over time, and countries' per capita allocations converge.</p>
<p><!--more--></p>
<p>In that model, China's per capita emissions are close to the global average and rising fast. Consequently, China's emissions rights would rise only for a short time until they hit the global average and then would need to decline along with the global average. That may not be acceptable to China and some other fast-growing countries. For them, some headroom may be needed, perhaps in the form of linking the growth in emissions allocations to GDP growth, as suggested by the Garnaut Climate Change Review (<a href="http://www.garnautreview.org.au/CA25734E0016A131/pages/draft-report">chapter 12 of the draft report</a>). That can conveniently gel with China's energy intensity target, mentioned in the post.</p>
<p>Whatever form a greenhouse gas commitment by China takes, it will have to result in comprehensive action, and it will likely need to be binding not voluntary to be successful. The Clean Development Mechanism (CDM) may have been a useful first step, but it is quite unsuitable to deliver the kind of reductions needed. Just how crucial China is for the global effort to limit climate change, and how urgent the challenge, is explained in several chapters in the <a href="http://epress.anu.edu.au/china_dilemma_citation.html">China Update 2008 boo</a><a href="http://epress.anu.edu.au/china_dilemma_citation.html">k</a>.</p>
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<title><![CDATA[ETS costs too high for agriculture]]></title>
<link>http://homepaddock.wordpress.com/?p=719</link>
<pubDate>Fri, 25 Jul 2008 04:07:08 +0000</pubDate>
<dc:creator>homepaddock</dc:creator>
<guid>http://homepaddock.wordpress.com/?p=719</guid>
<description><![CDATA[The costs from the proposed emissions trading scheme   will erode any improvement in red meat sched]]></description>
<content:encoded><![CDATA[<p>The costs from the <a href="http://www.ruralnews.co.nz/Default.asp?task=article&#38;subtask=show&#38;item=15806&#38;pageno=1" target="_blank">proposed emissions trading scheme </a>  will erode any improvement in red meat schedules and dairy payout.</p>
<p style="padding-left:30px;"><span style="color:#888888;">This and other adverse impacts have prompted industry groups to call for more time to voice their concerns about the ETS amid widespread fears it will crush competitiveness for no environmental benefit.<br />
</span><br />
There is absolutely no point in imposing costs on primary industry, or any other sector, if there is not going to be a measurable environmental benefit.</p>
<p style="padding-left:30px;">
<div style="padding-left:30px;"><span style="color:#888888;">As the first country to include agriculture in such a scheme, the sector says its concerns have not been taken into account, prompting a pan-industry letter sent to Parliament calling for another chance to make submissions.The latest independent analysis of the scheme in its current form shows sheep, beef and deer farmers will be ‘hit hard’ by the ETS – much more so than their dairy counterparts.</span></div>
<div></div>
<div style="padding-left:30px;"><span style="color:#888888;">Detailing a range of indicative costs for 2030 – the year when agriculture will pay full carbon emissions expenses – National Bank rural economist Kevin Wilson shows the cost of greenhouse gas (GHG) emissions per kilogram of product sold would be 38c for meat producers compared with 21c for dairy.</span></div>
<div style="padding-left:30px;"><span style="color:#888888;">Given the dairy payout is historically higher per kilogram of milksolids than a kilogram of meat, it means sheep, beef and deer farmers would pay a higher proportion of income into offsetting emissions than dairy farmers.</span></div>
<p><span style="color:#888888;"></p>
<p style="padding-left:30px;">The cost of emissions per hectare would equate to $185 for dairy and $84 for sheep and beef. Dairy also has a higher GHG cost per stock unit at $74, compared with $8.40 for sheep and beef.</p>
<div style="padding-left:30px;"><span style="color:#888888;">Wilson told Rural News many variables will determine the ultimate costs, but the fundamental question is why New Zealand has agriculture in its ETS plans when no other countries do.</span></div>
<div><span style="color:#888888;"> </span></div>
<div><span><span style="color:#000000;">There is no satisfactory answer to this question, especially when New Zealand's extensive grazing systems put us among the most productive producers of protein with the lowest carbon emissions in the world. </span></span></div>
<p></span></p>
<p style="padding-left:30px;">
<div style="padding-left:30px;"><span style="color:#888888;">He says 2018 – when agriculture would enter the scheme – is actually a lot closer that it seems given the changes that would need to be implemented: ‘Now is the time to start preparing potential management options.’Meat &#38; Wool NZ chairman Mike Petersen is not surprised to hear the ETS costs to dairy farmers are lower because they generally sell more product and at a higher price. </span></div>
<div style="padding-left:30px;"><span style="color:#888888;">But his major and immediate reason in pushing for change to the scheme is that New Zealand is the only country in the world to put agriculture in an ETS. ‘It’s a real concern to us,’ he says.</span></div>
<div style="padding-left:30px;"><span style="color:#888888;">‘That’s why we are arguing there needs to be some recognition of the competitive factors that New Zealand agriculture will face as a result of being the only country in the world to do so.’</span></div>
<p><span style="color:#888888;"></p>
<p style="padding-left:30px;">MWNZ was one of 14 industry groups calling for the chance to provide further submissions to the Climate Change Bill recently amended by the Finance and Expenditure Select Committee.</p>
<p style="padding-left:30px;">Petersen is concerned the ETS goes beyond meeting the nation’s international obligations, and warns carbon neutrality is not a sustainable long-term goal for New Zealand’s sheep and beef industry.</p>
<p style="padding-left:30px;">Another worry is ‘trade-offs’ being made in Parliament to pass the bill before the election, says Petersen.</p>
<p><span style="color:#000000;"><a href="http://keepingstock.blogspot.com/2008/07/joining-dots-part-ii.html" target="_blank">Keeping Stock </a>wonders if Helen Clark's support of Winston Peters this week is because she needs his support fot the bill. </span></p>
<div></div>
<p><span style="color:#888888;"></p>
<p style="padding-left:30px;">
<div style="padding-left:30px;"><span style="color:#888888;">Wilson’s calculations are based on a conservative carbon cost of $25/tonne, plus stocking rates of 2.5 cows/ha for dairy and 10 stock units/ha for sheep and beef. It takes fertiliser application of 500kg/ha for dairy and 50kg/ha for sheep/beef, production of 875kg of milksolids/ha and 220kg of meat and fibre/ha, along with 7.4t of CO2 equivalent per square hectare emitted for dairy and 3.4/ha for sheep and beef.</span></div>
<div><span style="color:#000000;"><span> </span></span></div>
<div><span style="color:#000000;">No-one knows what the cost will be, it is unlikely to be lower but it could be much higher.</span></div>
<p> </p>
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<title><![CDATA[GHG of the Week: SF6 (the cuddly one)]]></title>
<link>http://highwindows.wordpress.com/?p=57</link>
<pubDate>Wed, 23 Jul 2008 18:36:49 +0000</pubDate>
<dc:creator>highwindows</dc:creator>
<guid>http://highwindows.wordpress.com/?p=57</guid>
<description><![CDATA[Sulfur hexaflouride is the greenhouse gas that you can leave at home on Firday night to watch the ki]]></description>
<content:encoded><![CDATA[<p class="MsoNormal">Sulfur hexaflouride is the greenhouse gas that you can leave at home on Firday night to watch the kids. <span> </span>It’s the Elmo of greenhouse gasses.<span> </span>Compared to methane’s stink, carbon dioxide’s ubiquitous menace, or nitrogen triflouride’s toxicity, sulfur hexaflouride is a day at Walt Disney World (preferably <a href="http://www.laweekly.com/la-vida/slideshows/bats-day-at-disneyland/726/2/?slideshow=1#Slideshow_Image" target="_blank">Bats Day at Disney World</a>). <span><br />
</span></p>
[caption id="attachment_58" align="alignnone" width="100" caption="Cute at the molecular level: Jacks, anyone?  Courtesy wikipedia.  "]<a href="http://highwindows.files.wordpress.com/2008/07/100px-sulfur-hexafluoride-3d-balls.png"><img class="size-medium wp-image-58" src="http://highwindows.wordpress.com/files/2008/07/100px-sulfur-hexafluoride-3d-balls.png?w=100" alt="I mean it's even cute at the molecular level.  Jacks, anyone?  Courtesy wikipedia.  " width="100" height="101" /></a>[/caption]
<p class="MsoNormal">
<p class="MsoNormal">These Youtube Videos should shed light on the coolness.<span> </span>As you can see from these two ridiculously cute little mad scientists in the <a href="http://www.youtube.com/watch?v=XjCmwuGKR6g&#38;feature=related">aluminum-boat-floating-on-invisible-water video</a>, it is 5x heavier than air.<span> </span>As you can see from the multiple “<a href="http://www.youtube.com/watch?v=vcVMjGRzDz8&#38;NR=1">I-inhaled-sodium-hexaflouride</a><a href="http://www.youtube.com/watch?v=6KLNYlYGdYs&#38;feature=related">-and-it-made-my-voice-deep</a>” videos, it doesn’t cause any immediate health problems for human consumption.<span> </span></p>
<p class="MsoNormal">
<p class="MsoNormal">So what’s not to love?<span> </span>Well, it’s the strongest GHG there is, with a global warming potential 23,900 times more powerful than carbon dioxide.<span> </span>It stays around in the atmosphere for 3200 years.<span> </span><span> </span>And atmospheric concentrations are rising noticeably, from 4 parts per trillion in the late 1990s to 6.5 parts per trillion this decade.<span> </span>That’s a few orders of magnitude away from CO2’s 380PPM, but it’s important to note that SF6 is significantly more powerful than CO2.<span> </span>One pound of the stuff carries the same climate-changing effects of eleven tons of CO2.<span> </span><span> </span>To put it another way, one pound of SF6 is equivalent to the yearly carbon footprint of your <a href="http://www.independent.co.uk/environment/climate-change/your-carbon-footprint-revealed-climate-change-report-finds-we-each-produce-11-tons-of-carbon-a-year--and-breaks-down-how-we-do-it-427664.html" target="_blank">average British person</a>.</p>
[caption id="attachment_59" align="alignnone" width="209" caption="Not your average Brit.  "]<a href="http://highwindows.files.wordpress.com/2008/07/simon-pegg.jpg"><img class="size-medium wp-image-59" src="http://highwindows.wordpress.com/files/2008/07/simon-pegg.jpg?w=209" alt="Not your average Brit.  " width="209" height="300" /></a>[/caption]
<p class="MsoNormal">
<p class="MsoNormal">Further, there is no way to cleanse the air of SF6, unlike CO2's very natural carbon sinks like trees and the ocean.  It's just going to sit up there in the sky like a pickup truck on cinder blocks in the front yard until it degrades in 3200 years.</p>
<p class="MsoNormal">It’s primarily used as a gaseous insulator for <a href="http://video.google.com/videoplay?docid=-1778431537970868365&#38;q=sf6&#38;ei=3nWHSKmROIuGrgPWheC4CA">electrical switchgear</a>, accounting for 80% of usage worldwide.<span> </span>Other uses include particle accelerators, electron microscopes, medical devices, Navy torpedoes, and magnesium casting.<span> </span><span> </span>So not only is SF6 fun, it’s brainy.<span> </span></p>
<p class="MsoNormal">At least climate change regulators are aware of it, unlike nitrogen triflouride.<span> </span>SF6 is covered by the <a href="http://europa.eu/scadplus/leg/en/lvb/l28060.htm" target="_blank">Kyoto</a> protocol. <span> </span>The EPA runs a <a href="http://www.epa.gov/electricpower-sf6/basic.html" target="_blank">voluntary emissions reduction program</a> for power providers to limit leakage into the atmosphere.<span> </span>Of course, the EPA program is a perfect example of the kinds of environmental “regulation” favored by old line business interests – we’re talking about measuring and limiting leaks, not using high taxes to make alternatives more attractive.</p>
<p class="MsoNormal">Of course I have a great place for the world to start eliminating SF6 emissions.<span> </span>Let’s take it out of the hands of <a href="http://www.youtube.com/swf/l.swf?video_id=jftX2WyAHd4&#38;rel=1&#38;eurl=&#38;iurl=http%3A//i.ytimg.com/vi/jftX2WyAHd4/default.jpg&#38;t=OEgsToPDskJhf2yn5ygMAVCE5WeDtxXh">budding magicians</a>, <a href="http://www.youtube.com/watch?v=XtI4e7Q3WDQ&#38;feature=related">Jay Leno</a>, and <a href="http://www.youtube.com/watch?v=gV1zXkMFYHc" target="_blank">Swedish radio hosts</a>.<span> </span>In the future we'll watch these videos with a mix of horror and pity, like a planetary <a href="http://www.youtube.com/watch?v=eeI12pUfneU" target="_blank">funniest home videos</a>.  When presented with a died-in-the-wool killer, we created "voluntary reduction partnerships" and let our kids do magic tricks.</p>
<p class="MsoNormal">If we weren't so busy laughing, we'd be crying.</p>
<p class="MsoNormal">
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<title><![CDATA[SD top picks 7/22/2008]]></title>
<link>http://seattledirt.wordpress.com/?p=401</link>
<pubDate>Wed, 23 Jul 2008 16:41:33 +0000</pubDate>
<dc:creator>brandibratrude</dc:creator>
<guid>http://seattledirt.wordpress.com/?p=401</guid>
<description><![CDATA[
photo credit
Sightline Daily | Northwest News That Matters
Top Picks of the Day
1. First Wolf Pack ]]></description>
<content:encoded><![CDATA[<p><img class="alignnone" src="http://farm3.static.flickr.com/2148/2273214246_3666f1ec42.jpg?v=0" alt="" width="500" height="375" /></p>
<p><a href="http://flickr.com/photos/seabird/2273214246/" target="_blank">photo credit</a></p>
<p><a href="http://daily.sightline.org/" target="_blank">Sightline Daily &#124; Northwest News That Matters</a></p>
<p>Top Picks of the Day</p>
<p>1. <a href="http://www.juneauempire.com/stories/072208/reg_307861404.shtml" target="_blank">First Wolf Pack is Confirmed in Oregon</a> -  Juneau Empire 07/22/2008</p>
<p>2. <a href="http://money.cnn.com/news/newsfeeds/articles/djf500/200807181626DOWJONESDJONLINE000752_FORTUNE5.htm" target="_blank">Many In White House Reversed On Greenhouse Gases</a> - Fortune 07/22/2008</p>
<p>3. <a href="http://www.canada.com/vancouversun/news/story.html?id=5ec89b0d-8eb9-4f09-9b4f-e3a45fdc429a" target="_blank">Libraries all over Canada Thrive in Internet Age</a> - Vancouver Sun 07/22/2008</p>
<p>4. <a href="http://seattlepi.nwsource.com/business/371703_droppingshopping22.html" target="_blank">Cutting Consumerism for Conservation</a> - Seattle Post-Intelligencer 07/22/2008</p>
<p>5. <a href="http://www.theglobeandmail.com/servlet/story/LAC.20080722.BCSALMON22/TPStory/TPNational/BritishColumbia/" target="_blank">Salmon's Return Spawns Celebration in BC</a> - Toronto Globe and Mail 07/22/2008</p>
<p>6. <a href="http://www.oregonlive.com/business/oregonian/index.ssf?/base/business/121669891554050.xml&#38;coll=7" target="_blank">Oregon Solar Industry Approaching Solstice</a> - Portland Oregonian 07/22/2008</p>
<p>7. <a href="http://www.kitsapsun.com/news/2008/jul/21/county-looks-at-curbing-employees-car-use-work/" target="_blank">Kitsap Considers Curbing Employees' Driving</a><a href="http://www.kitsapsun.com/news/2008/jul/21/county-looks-at-curbing-employees-car-use-work/" target="_blank"> </a>- Kitsap Sun 07/21/2008</p>
<p>8. <a href="http://www.rockymountainnews.com/news/2008/jul/22/sick-nuclear-workers-shifting-rules-form-quagmire-/" target="_blank">For Sick Nuclear Workers, Denial of Compensation</a> - Rocky Mountain News 07/22/2008</p>
<p>9. <a href="http://www.oregonlive.com/news/oregonian/index.ssf?/base/news/121669710911520.xml&#38;coll=7" target="_blank">Undocumented Worker Ruling Could Rattle Oregon's Economy</a> - Portland Oregonian 07/22/2008</p>
<p>10. <a href="http://www.nytimes.com/2008/07/22/business/22jobs.html?_r=1&#38;ref=todayspaper&#38;oref=slogin" target="_blank">Poor Economy Slams Brakes on Working Women</a> - New York Times 07/22/2008</p>
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<title><![CDATA[Global Warming "Science": The Myth of Consensus]]></title>
<link>http://800lbgorilla.wordpress.com/?p=2468</link>
<pubDate>Tue, 22 Jul 2008 02:09:44 +0000</pubDate>
<dc:creator>Dan Murray</dc:creator>
<guid>http://800lbgorilla.wordpress.com/?p=2468</guid>
<description><![CDATA[ 

Climate Sensitivity Reconsidered




By Christopher Monckton of Brenchley
Abstract
The Intergove]]></description>
<content:encoded><![CDATA[<p> </p>
<div id="mainpage-title" class="left">
<h2>Climate Sensitivity Reconsidered</h2>
</div>
<div id="CS_Element_maincontent" class="CS_Element_Schedule">
<div class="CS_Element_Textblock">
<div class="CS_Textblock_Text">
<p style="font-weight:bold;">By Christopher Monckton of Brenchley</p>
<p style="font-weight:bold;">Abstract</p>
<p>The Intergovernmental Panel on Climate Change (IPCC, 2007) concluded that anthropogenic CO<sub>2</sub> emissions probably caused more than half of the “global warming” of the past 50 years and would cause further rapid warming. However, global mean surface temperature has not risen since 1998 and may have fallen since late 2001. The present analysis suggests that the failure of the IPCC’s models to predict this and many other climatic phenomena arises from defects in its evaluation of the three factors whose product is climate sensitivity:</p>
<ol>
<li>Radiative forcing ΔF;</li>
<li>The no-feedbacks climate sensitivity parameter κ; and</li>
<li>The feedback multiplier ƒ.</li>
</ol>
<p>Some reasons why the IPCC’s estimates may be excessive and unsafe are explained. More importantly, the conclusion is that, perhaps, there is no “climate crisis”, and that currently-fashionable efforts by governments to reduce anthropogenic CO<sub>2</sub> emissions are pointless, may be ill-conceived, and could even be harmful.</p>
<p style="font-weight:bold;">The context</p>
<p>LOBALLY-AVERAGED land and sea surface absolute temperature <em>T<sub>S</sub></em> has not risen since 1998 (Hadley Center; US National Climatic Data Center; University of Alabama at Huntsville; etc.). For almost seven years, <em>T<sub>S</sub></em> may even have fallen (Figure 1). There may be no new peak until 2015 (Keenlyside<em>et al.</em>, 2008).</p>
<p>The models heavily relied upon by the Intergovernmental Panel on Climate Change (IPCC) had not projected this multidecadal stasis in “global warming”; nor (until trained <em>ex post facto</em>) the fall in <em>T<sub>S</sub></em> from 1940-1975; nor 50 years’ cooling in Antarctica (Doran <em>et al.,</em> 2002) and the Arctic (Soon, 2005); nor the absence of ocean warming since 2003 (Lyman <em>et al.,</em> 2006; Gouretski&#38;Koltermann, 2007); nor the onset, duration, or intensity of the Madden-Julian intraseasonal oscillation, the Quasi-Biennial Oscillation in the tropical stratosphere, El Nino/La Nina oscillations, the Atlantic Multidecadal Oscillation, or the Pacific Decadal Oscillation that has recently transited from its warming to its cooling phase (oceanic oscillations which, on their own, may account for all of the observed warmings and coolings over the past half-century: Tsonis<em>et al.,</em> 2007); nor the magnitude nor duration of multi-century events such as the Mediaeval Warm Period or the Little Ice Age; nor the cessation since 2000 of the previously-observed growth in atmospheric methane concentration (IPCC, 2007); nor the active 2004 hurricane season; nor the inactive subsequent seasons; nor the UK flooding of 2007 (the Met Office had forecast a summer of prolonged droughts only six weeks previously); nor the solar Grand Maximum of the past 70 years, during which the Sun was more active, for longer, than at almost any similar period in the past 11,400 years (Hathaway, 2004; Solanki<em>et al.</em>, 2005); nor the consequent surface “global warming” on Mars, Jupiter, Neptune’s largest moon, and even distant Pluto; nor the eerily- continuing 2006 solar minimum; nor the consequent, precipitate decline of ~0.8 °C in <em>T<sub>S</sub></em> from January 2007 to May 2008 that has canceled out almost all of the observed warming of the 20<sup>th</sup> century.</p>
<p><strong>Figure 1</strong></p>
<p><strong>Mean global surface temperature anomalies (</strong><strong>°</strong><strong>C), 2001-2008</strong></p>
[caption id="" align="alignnone" width="485" caption="null"]<img style="border:0;" src="http://www.aps.org/units/fps/newsletters/200807/images/figure1.gif" border="0" alt="figure 1" width="485" height="227" />[/caption]
<p><em>Since the phase-transition in mean global surface temperature late in 2001, a pronounced downtrend has set in. In the cold winter of 2007/8, record sea-ice extents were observed at both Poles. The January-to-January fall in temperature from 2007-2008 was the greatest since global records began in 1880. Data sources: Hadley Center monthly combined land and sea surface temperature anomalies; University of Alabama at Huntsville Microwave Sounding Unit monthly lower-troposphere anomalies; Linear regressions – – – – – – –</em></p>
<p>An early projection of the trend in <em>T<sub>S</sub></em> in response to “global warming” was that of Hansen (1988), amplifying Hansen (1984) on quantification of climate sensitivity. In 1988, Hansen showed Congress a graph projecting rapid increases in <em>T<sub>S</sub></em> to 2020 through “global warming” (Fig. 2):</p>
<p><strong>Figure 2</strong></p>
<p><strong>Global temperature projections and outturns, 1988-2020</strong></p>
<p><strong><img src="http://www.aps.org/units/fps/newsletters/200807/images/figure2.gif" border="0" alt="figure 2" width="432" height="254" /><br />
</strong></p>
<p><em>Hansen (1988) projected that global temperature would stabilize <strong>(A)</strong> if global carbon dioxide concentration were controlled from 1988 and static from 2000: otherwise temperature would rise rapidly <strong>(B-C).</strong> IPCC (1990) agreed <strong>(D).</strong> However, these projections proved well above the National Climate Data Center’s outturn <strong>(E-F),</strong> which, in contrast to the Hadley Center and UAH records (Fig. 1), show a modest rise in temperature from 1998-2007. If McKitrick (2007) <strong>(G,H)</strong> is correct that temperature since 1980 has risen at only half of the observed rate, outturn tracks Hansen’s CO<sub>2</sub> stabilization case <strong>(A)</strong>, although emissions have risen rapidly since 1988.</em></p>
<p>To what extent, then, has humankind warmed the world, and how much warmer will the world become if the current rate of increase in anthropogenic CO<sub>2</sub> emissions continues? Estimating “climate sensitivity” – the magnitude of the change in <em>T<sub>S</sub></em> after doubling CO<sub>2</sub> concentration from the pre-industrial 278 parts per million to ~550 ppm – is the central question in the scientific debate about the climate. The official answer is given in IPCC (2007):</p>
<p>“It is <em>very likely</em> that anthropogenic greenhouse gas increases caused most of the observed increase in [<em>T<sub>S</sub></em>] since the mid-20th century. … The equilibrium global average warming expected if carbon dioxide concentrations were to be sustained at 550 ppm is <em>likely</em> to be in the range 2-4.5 °C above pre-industrial values, with a best estimate of about 3 °C.”</p>
<p>Here as elsewhere the IPCC assigns a 90% confidence interval to “<em>very likely”,</em> rather than the customary 95% (two standard deviations). There is no good statistical basis for any such quantification, for the object to which it is applied is, in the formal sense, chaotic. The climate is “a complex, non-linear, chaotic object” that defies long-run prediction of its future states (IPCC, 2001), unless the initial state of its millions of variables is known to a precision that is in practice unattainable, as Lorenz (1963; and see Giorgi, 2005) concluded in the celebrated paper that founded chaos theory –</p>
<p>“Prediction of the sufficiently distant future is impossible by any method, unless the present conditions are known exactly. In view of the inevitable inaccuracy and incompleteness of weather observations, precise, very-long-range weather forecasting would seem to be non-existent.”.</p>
<p>The <em>Summary for Policymakers</em> in IPCC (2007) says <em>–</em></p>
<p>“The CO<sub>2</sub>radiative forcing increased by 20% in the last 10 years (1995-2005).”</p>
<p>Natural or anthropogenic CO<sub>2</sub> in the atmosphere induces a “radiative forcing” <em>Δ</em><em>F</em>, defined by IPCC (2001: ch.6.1) asa change in net (down minus up) radiant-energy flux at the tropopause in response to a perturbation. Aggregate forcing is natural (pre-1750) plus anthropogenic-era (post-1750) forcing. At 1990, aggregate forcing from CO<sub>2</sub> concentration was ~27 W m<sup>–2</sup> (Kiehl&#38;Trenberth, 1997). From 1995-2005, CO<sub>2</sub> concentration rose 5%, from 360 to 378 W m<sup>–2</sup>, with a consequent increase in aggregate forcing (from Eqn. 3 below) of ~0.26 W m<sup>–2</sup>, or &#60;1%. That is one-twentieth of the value stated by the IPCC. The absence of any definition of “radiative forcing” in the 2007 <em>Summary</em> led many to believe that the aggregate (as opposed to anthropogenic) effect of CO<sub>2</sub> on <em>T<sub>S</sub></em> had increased by 20% in 10 years. The IPCC – despite requests for correction – retained this confusing statement in its report.</p>
<p>Such solecisms throughout the IPCC’s assessment reports (including the insertion, after the scientists had completed their final draft, of a table in which four decimal points had been right-shifted so as to multiply tenfold the observed contribution of ice-sheets and glaciers to sea-level rise), combined with a heavy reliance upon computer models unskilled even in short-term projection, with initial values of key variables unmeasurable and unknown, with advancement of multiple, untestable, non-Popper-falsifiable theories, with a quantitative assignment of unduly high statistical confidence levels to non-quantitative statements that are ineluctably subject to very large uncertainties, and, above all, with the now-prolonged failure of <em>T<sub>S</sub></em> to rise as predicted (Figures 1, 2), raise questions about the reliability and hence policy-relevance of the IPCC’s central projections.</p>
<p>Dr. RajendraPachauri, chairman of the UN Intergovernmental Panel on Climate Change (IPCC), has recently said that the IPCC’s evaluation of climate sensitivity must now be revisited. This paper is a respectful contribution to that re-examination.</p>
<p><strong>The IPCC’s method of evaluating climate sensitivity</strong></p>
<p>We begin with an outline of the IPCC’s method of evaluating climate sensitivity. For clarity we will concentrate on central estimates. The IPCC defines climate sensitivity as equilibrium temperature change <em>ΔT<sub>λ</sub></em>in response to all anthropogenic-era radiativeforcings and consequent “temperature feedbacks” – further changes in <em>T<sub>S</sub></em> that occur because <em>T<sub>S</sub></em> has already changed in response to a forcing – arising in response to the doubling of pre-industrial CO<sub>2</sub> concentration (expected later this century). <em>ΔT<sub>λ</sub></em> is, at its simplest, the product of three factors: the sum <em>ΔF</em><sub>2x</sub> of all anthropogenic-era radiativeforcingsat CO<sub>2</sub> doubling; the base or “no-feedbacks” climate sensitivity parameter <em>κ</em>; and the feedback multiplier <em>f</em>, such that the final or “with-feedbacks” climate sensitivity parameter <em>λ</em> <em>=</em> <em>κ</em><em>f.</em> Thus –</p>
<p><em>ΔT<sub>λ</sub></em> = <em>ΔF</em><sub>2x</sub> <em>κ f</em> = <em>ΔF</em><sub>2x</sub><em>λ,</em> (1)</p>
<p>where <em>f</em> = (1 – <em>b</em><em>κ</em>)<sup>–1</sup>, (2)</p>
<p>such that <em>b</em> is the sum of all climate-relevant temperature feedbacks<em>.</em> The definition of <em>f</em> in Eqn. (2) will be explained later. We now describe <em>seriatim</em> each of the three factors in <em>ΔT<sub>λ</sub></em>: namely, <em>ΔF</em><sub>2x</sub>, <em>κ</em>, and <em>f</em>.</p>
<p><strong>1. Radiative forcing</strong> <strong><em>ΔF</em></strong><strong>CO<sub>2</sub></strong><strong><em>,</em></strong>where (<em>C</em>/<em>C</em><sub>0</sub>) is a proportionate increase in CO<sub>2</sub> concentration, is given by several formulae in IPCC (2001, 2007). The simplest, following Myrhe (1998), is Eqn. (3) –</p>
<p><em>ΔF</em>CO<sub>2</sub>≈ 5.35 ln(<em>C</em>/<em>C</em><sub>0</sub>) ==&#62;<em>ΔF</em>2xCO<sub>2</sub>≈ 5.35 ln 2 ≈ 3.708 W m<sup>–2</sup>. (3)</p>
<p>To <em>ΔF</em>2xCO<sub>2</sub> is added the slightly net-negative sum of all other anthropogenic-era radiativeforcings, calculated from IPCC values (Table 1), to obtain total anthropogenic-era radiative forcing <em>ΔF</em><sub>2x</sub> at CO<sub>2</sub> doubling (Eqn. 3). Note that forcings occurring in the anthropogenic era may not be anthropogenic.</p>
<p class="MsoNormal" style="text-align:left;"><strong>Table 1</strong></p>
<p class="MsoNormal" style="text-align:left;"><strong>Evaluation of</strong> <strong><em>ΔF</em></strong><strong><sub>2x</sub></strong> <strong>from the IPCC’s anthropogenic-era forcings</strong></p>
<p class="MsoNormal" style="text-align:left;"><strong><img src="http://www.aps.org/units/fps/newsletters/200807/images/table1.gif" border="0" alt="table 1" width="600" height="373" /><br />
</strong></p>
<p><em>Anthropogenic-era radiativeforcings from CO<sub>2</sub>, from long-lived</em> <em>(LLGHG)</em> <em>and short-lived</em> <em>(SLGHG)</em> <em>greenhouse gases are added to other forcings to yield total anthropogenic-era forcings ΔF</em><sub>2x</sub><em>, which are then reduced by a probability-density function. The column for 1750-2005 summarizes the values given in IPCC (2007). The column for forcings from 1750 to CO<sub>2</sub> doubling proceeds differently, since IPCC (2007) does not publish projected values for individual forcings at CO<sub>2</sub> doubling other than that for CO<sub>2</sub> itself. However, IPCC (2001) projected that CO<sub>2</sub>forcings by 2050-2100, when CO<sub>2</sub> doubling is expected, would represent 70-80% of all greenhouse-gas forcings. That projection is followed here, while non-greenhouse-gas forcings (which are strongly net-negative) are conservatively held constant. To preserve the focus on anthropogenic forcings, the IPCC’s minuscule estimate of the solar forcing during the anthropogenic era is omitted.</em></p>
<p>From the anthropogenic-era forcings summarized in Table 1, we obtain the first of the three factors –</p>
<p><em>ΔF</em>2x≈ 3.405 W m<sup>–2</sup>. (4)</p>
<p><strong>2. The base or “no-feedbacks” climate sensitivity parameter <em>κ,</em></strong> where <em>ΔT<sub>κ</sub></em> is the response of <em>T<sub>S</sub></em> to radiativeforcings ignoring temperature feedbacks, <em>ΔT<sub>λ</sub></em> is the response of <em>T<sub>S</sub></em> to feedbacks as well as forcings, and <em>b</em> is the sum in W m<sup>–2</sup> °K<sup>–1</sup>of all individual temperature feedbacks, is –</p>
<p><em>κ</em> = <em>ΔT<sub>κ</sub> / ΔF</em>2x °K W<sup>–1</sup> m<sup>2</sup>, by definition; (5)</p>
<p>= <em>ΔT<sub>λ</sub> /</em> (<em>ΔF</em>2x <em>+ bΔT<sub>λ</sub></em>) °K W<sup>–1</sup> m<sup>2</sup>. (6)</p>
<p>In Eqn. (5), <em>ΔT<sub>κ</sub></em>, estimated by Hansen (1984) and IPCC (2007) as 1.2-1.3 °K at CO<sub>2</sub> doubling, is the change in <em>surface</em> temperature in response to a <em>tropopausal</em>forcing <em>ΔF</em><sub>2x</sub><em>,</em> ignoring any feedbacks.</p>
<p><em>ΔT<sub>κ</sub></em> is not directly measurable in the atmosphere because feedbacks as well as forcings are present. Instruments cannot distinguish between them. However, from Eqn. (2) we may substitute 1 / (1 – <em>bκ</em>) for <em>f</em> in Eqn. (1), rearranging terms to yield a useful second identity, Eqn. (6), expressing <em>κ</em>in terms of <em>ΔT<sub>λ</sub>,</em> which is measurable, albeit with difficulty and subject to great uncertainty (McKitrick, 2007).</p>
<p>IPCC (2007) does not mention <em>κ</em> and, therefore, provides neither error-bars nor a “Level of Scientific Understanding” (the IPCC’s subjective measure of the extent to which enough is known about a variable to render it useful in quantifying climate sensitivity). However, its implicit value <em>κ</em>≈ 0.313 °K W<sup>–1</sup> m<sup>2</sup>, shown in Eqn. 7, may be derived using Eqns. 9-10 below, showing it to be the reciprocal of the estimated “uniform-temperature” radiative cooling response –</p>
<p>“Under these simplifying assumptions the amplification [<em>f</em>] of the global warming from a feedback parameter [<em>b</em>] (in W m<sup>–2</sup> °C<sup>–1</sup>) with no other feedbacks operating is 1 / (1 – [<em>bκ</em><sup>–1</sup>]), where [–<em>κ</em><sup>–1</sup>] is the ‘uniform temperature’ radiative cooling response (of value approximately –3.2 W m<sup>–2</sup> °C<sup>–1</sup>; Bony <em>et al.</em>, 2006). If <em>n</em> independent feedbacks operate, [<em>b</em>] is replaced by (<em>λ</em><em><sub>1</sub></em> + <em>λ</em> <sub>2</sub>+ ... <em>λ</em> <sub>n</sub>).” (IPCC, 2007: ch.8, footnote).</p>
<p>Thus, <em>κ</em>≈ 3.2<sup>–1</sup> ≈ 0.313°K W<sup>–1</sup> m<sup>2</sup>. (7)</p>
<p><strong>3. The feedback multiplier</strong> <strong><em>f</em></strong> is a unitless variable by which the base forcing is multiplied to take account of mutually-amplified temperature feedbacks. A “temperature feedback” is a change in <em>T<sub>S</sub></em>that occurs precisely because <em>T<sub>S</sub></em>has already changed in response to a forcing or combination of forcings. An instance: as the atmosphere warms in response to a forcing, the carrying capacity of the space occupied by the atmosphere for water vapor increases near-exponentially in accordance with the Clausius-Clapeyron relation. Since water vapor is the most important greenhouse gas, the growth in its concentration caused by atmospheric warming exerts an additional forcing, causing temperature to rise further. This is the “water-vapor feedback”. Some 20 temperature feedbacks have been described, though none can be directly measured. Most have little impact on temperature. The value of each feedback, the interactions between feedbacks and forcings, and the interactions between feedbacks and other feedbacks, are subject to very large uncertainties.</p>
<p>Each feedback, having been triggered by a change in atmospheric temperature, itself causes a temperature change. Consequently, temperature feedbacks amplify one another. IPCC (2007: ch.8) defines <em>f</em> in terms of a form of the feedback-amplification function for electronic circuits given in Bode (1945), where <em>b</em> is the sum of all individual feedbacks before they are mutually amplified:</p>
<p><em>f</em> = (1 – <em>bκ</em>)<sup>–1</sup> (8)</p>
<p>= <em>ΔT<sub>λ</sub></em>/ <em>ΔT<sub>κ</sub></em></p>
<p>Note the dependence of <em>f</em> not only upon the feedback-sum <em>b</em> but also upon <em>κ</em> –</p>
<p><em>ΔT<sub>λ</sub></em> =(<em>ΔF + bΔT<sub>λ</sub></em>)<em>κ</em></p>
<p>==&#62; <em>ΔT<sub>λ</sub></em> (1 – <em>bκ</em>) = <em>ΔFκ</em></p>
<p>==&#62; <em>ΔT<sub>λ</sub></em> = <em>ΔFκ</em>(1 – <em>bκ</em>)<sup>–1</sup></p>
<p>==&#62; <em>ΔT<sub>λ</sub></em>/ <em>ΔF</em> = <em>λ</em> = <em>κ</em>(1 – <em>bκ</em>)<sup>–1</sup> = <em>κf</em></p>
<p>==&#62; <em>f</em> = (1 – <em>bκ</em>)<sup>–1</sup> ≈ (1 – <em>b</em> /3.2)<sup>–1</sup></p>
<p>==&#62; <em>κ</em> ≈ 3.2<sup>–1</sup> ≈ 0.313 °K W<sup>–1</sup> m<sup>2</sup>. (9)</p>
<p>Equivalently, expressing the feedback loop as the sum of an infinite series,</p>
<p><em>ΔT</em><em><sub>λ</sub></em> = <em>ΔF</em><em>κ</em>+ <em>ΔF</em><em>κ</em> <sup>2</sup><em>b</em> + <em>ΔF</em><em>κ</em> <sup>2</sup><em>b</em><sup>2</sup> + …</p>
<p>= <em>ΔF</em><em>κ</em>(1 + <em>κb</em> + <em>κb</em><sup>2</sup> + …)</p>
<p>= <em>ΔF</em><em>κ</em>(1 –<em>κb</em>)<sup>–1</sup></p>
<p>= <em>ΔF</em><em>κf</em></p>
<p>==&#62;<em>λ</em> = <em>ΔT</em><em><sub>λ</sub></em>/<em>ΔF</em> = <em>κf</em> (10)</p>
<p class="MsoNormal" style="text-align:left;"><strong>Figure 3</strong></p>
<div style="text-align:left;"><strong>Bode (1945) feedback amplification schematic<br />
<img src="http://www.aps.org/units/fps/newsletters/200807/images/figure3.gif" border="0" alt="figure 3" width="538" height="309" /><br />
</strong></div>
<p><em>A forcing</em> <em>d</em><em>F is input by multiplication to the final or “with-feedbacks” climate sensitivity parameter</em> <em>λ = κf</em><em>, yielding the output dT = dF</em><em>λ = dFκf</em><em>. To find</em> <em>λ = κf,</em> <em>the base or “no-feedbacks” climate sensitivity parameter</em> <em>κ</em> <em>is successively amplified round the feedback-loop by feedbacks summing to b</em><em>.</em></p>
<p>For the first time, IPCC (2007) quantifies the key individual temperature feedbacks summing to <em>b</em>:</p>
<p>“In AOGCMs, the water vapor feedback constitutes by far the strongest feedback, with a multi-model mean and standard deviation … of 1.80 ± 0.18 W m<sup>–2</sup>K<sup>–1</sup>, followed by the negative lapse rate feedback (–0.84 ± 0.26 W m<sup>–2</sup> K<sup>–1</sup>) and the surface albedo feedback (0.26 ± 0.08 W m<sup>–2</sup> K<sup>–1</sup>). The cloud feedback mean is 0.69 W m<sup>–2</sup> K<sup>–1</sup>with a very large inter-model spread of ±0.38 W m<sup>–2</sup> K<sup>–1</sup>.” (Soden&#38; Held, 2006).</p>
<p>To these we add the CO<sub>2</sub> feedback, which IPCC (2007, ch.7) separately expresses not as W m<sup>–2</sup>°K<sup>–1</sup> but as concentration increase per CO<sub>2</sub> doubling: [25, 225] ppmv, central estimate <em>q</em> = 87 ppmv. Where <em>p</em> is concentration at first doubling, the proportionate increase in atmospheric CO<sub>2</sub> concentration from the CO<sub>2</sub> feedback is <em>o =</em> (<em>p</em> + <em>q</em>) / <em>p</em> = (556 + 87) / 556 ≈ 1.16. Then theCO<sub>2</sub> feedback is –</p>
<p><em>λ</em><sub>CO2</sub><em>= z</em>ln(<em>o</em>) / <em>dT<sub>λ</sub></em> ≈ 5.35 ln(1.16) / 3.2 ≈ 0.25 W m<sup>–2</sup> K<sup>–1</sup>. (11)</p>
<p>The CO<sub>2</sub> feedback is added to the previously-itemized feedbacks to complete the feedback-sum<em>b</em>:</p>
<p><em>b</em> = 1.8 – 0.84 + 0.26 + 0.69 <span style="text-decoration:underline;">+ 0.25</span> ≈ 2.16 W m<sup>–2</sup> ºK<sup>–1</sup>, (12)</p>
<p>so that, where <em>κ</em>= 0.313, the IPCC’s unstated central estimate of the value of the feedback factor <em>f</em> is at the lower end of the range <em>f =</em> 3-4 suggested in Hansen <em>et al.</em> (1984) –</p>
<p><em>f =</em> (1 – <em>b</em><em>κ</em>)<sup>–1</sup>≈(1 – 2.16 x 0.313)<sup>–1</sup> ≈ 3.077. (13)</p>
<p><strong>Final climate sensitivity</strong> <strong><em>ΔT<sub>λ</sub></em></strong><strong>,</strong>after taking account of temperature feedbacks as well as the forcings that triggered them,is simply the product of the three factors described in Eqn. (1), each of which we have briefly described above. Thus, at CO<sub>2</sub> doubling, –</p>
<p><em>ΔT<sub>λ</sub></em> = <em>ΔF</em><sub>2x</sub><em>κ f</em> ≈ 3.405 x 0.313 x 3.077 ≈ 3.28 °K (14)</p>
<p>IPCC (2007) gives <em>dT<sub>λ</sub></em>on [2.0, 4.5] ºK at CO<sub>2</sub> doubling, central estimate <em>dT<sub>λ</sub></em>≈ 3.26 °K, demonstrating that the IPCC’s method has been faithfully replicated. There is a further checksum, –</p>
<p><em>ΔT<sub>κ</sub></em> = <em>ΔT<sub>λ</sub></em>/ <em>f</em> = <em>κ ΔF</em><sub>2x</sub>= 0.313 x 3.405 ≈ 1.1 °K, (15)</p>
<p>sufficiently close to the IPCC’s estimate <em>ΔT<sub>κ</sub></em> ≈ 1.2 °K, based on Hansen (1984), who had estimated a range 1.2-1.3 °K based on his then estimate that the radiative forcing <em>ΔF</em><sub>2xCO2</sub> arising from a CO<sub>2</sub> doubling would amount to 4.8 W m<sup>–2</sup>, whereas the IPCC’s current estimate is <em>ΔF</em><sub>2xCO2</sub> = 3.71 W m<sup>–2</sup> (see Eqn. 2), requiring a commensurate reduction in <em>ΔT<sub>κ</sub></em>that the IPCC has not made.</p>
<p>A final checksum is provided by Eqn. (5), giving a value identical to that of the IPCC at Eqn (7):</p>
<p><em>κ</em> = <em>ΔT<sub>λ</sub> /</em> (<em>ΔF</em><sub>2x</sub> <em>+ bΔT<sub>λ</sub></em>)</p>
<p>≈ 3.28 / (3.405 + 2.16 x 3.28)</p>
<p>≈ 0.313°K W<sup>–1</sup> m<sup>2</sup>. (16)</p>
<p>Having outlined the IPCC’s methodology, we proceed to re-evaluate each of the three factors in <em>dT<sub>λ</sub></em>. None of these three factors is directly mensurable. For this and other reasons, it is not possible to obtain climate sensitivity numerically using general-circulation models: for, as Akasofu (2008) has pointed out, climate sensitivity must be an <em>input to</em> any such model, not an <em>output from</em> it.</p>
<p>In attempting a re-evaluation of climate sensitivity, we shall face the large uncertainties inherent in the climate object, whose complexity, non-linearity, and chaoticity present formidable initial-value and boundary-value problems. We cannot measure total radiative forcing, with or without temperature feedbacks, because radiative and non-radiative atmospheric transfer processes combined with seasonal, latitudinal, and altitudinal variabilities defeat all attempts at reliable measurement. We cannot even measure changes in <em>T<sub>S</sub></em> to within a factor of two (McKitrick, 2007).</p>
<p>Even satellite-based efforts at assessing total energy-flux imbalance for the whole Earth-troposphere system are uncertain. Worse, not one of the individual forcings or feedbacks whose magnitude is essential to an accurate evaluation of climate sensitivity is mensurable directly, because we cannot distinguish individual forcings or feedbacks one from another in the real atmosphere, we can only guess at the interactions between them, and we cannot even measure the relative contributions of all forcings and of all feedbacks to total radiative forcing. Therefore we shall adopt two approaches: theoretical demonstration (where possible); and empirical comparison of certain outputs from the models with observation to identify any significant inconsistencies.</p>
<p><strong>Radiative forcing</strong> <strong><em>ΔF</em></strong><strong><sub>2x</sub></strong> <strong>reconsidered</strong></p>
<p>We take the second approach with <em>ΔF</em><sub>2x</sub>. Since we cannot measure any individual forcing directly in the atmosphere, the models draw upon results of laboratory experiments in passing sunlight through chambers in which atmospheric constituents are artificially varied; such experiments are, however, of limited value when translated into the real atmosphere, where radiative transfers and non-radiative transports (convection and evaporation up, advection along, subsidence and precipitation down), as well as altitudinal and latitudinal asymmetries, greatly complicate the picture. Using these laboratory values, the models attempt to produce latitude-versus-altitude plots to display the characteristic signature of each type of forcing. The signature or fingerprint of anthropogenic greenhouse-gas forcing, as predicted by the models on which the IPCC relies, is distinct from that of any other forcing, in that the models project that the rate of change in temperature in the tropical mid-troposphere – the region some 6-10 km above the surface – will be twice or thrice the rate of change at the surface (Figure 4):</p>
<p style="text-align:left;"><strong>Figure 4</strong></p>
<p style="text-align:left;"><strong>Temperature fingerprints of five forcings</strong></p>
<p style="text-align:left;"><strong><img src="http://www.aps.org/units/fps/newsletters/200807/images/figure4.gif" border="0" alt="figure 4" width="362" height="354" /><br />
</strong></p>
<p><em>Modeledzonal mean atmospheric temperature change (</em><em>º</em><em>C per century, 1890-1999) in response to five distinct forcings (a-e), and to all five forcings combined (f). Altitude is in hPa (left scale) and km (right scale) vs. latitude (abscissa). <strong>Source:</strong> IPCC (2007)</em>.</p>
<p>The fingerprint of anthropogenic greenhouse-gas forcing is a distinctive “hot-spot” in the tropical mid-troposphere. Figure 4 shows altitude-vs.-latitude plots from four of the IPCC’s models:</p>
<p style="text-align:left;"><strong>Figure 5</strong></p>
<p style="text-align:left;"><strong>Fingerprints of anthropogenic warming projected by four models</strong></p>
<p style="text-align:left;"><strong><img src="http://www.aps.org/units/fps/newsletters/200807/images/figure5.gif" border="0" alt="figure 5" width="523" height="587" /><br />
</strong></p>
<p><em>Zonal mean equilibrium temperature change (°C) at CO<sub>2</sub> doubling (2</em>x <em>CO<sub>2</sub> – control), as a function of latitude and pressure (hPa) for 4 general-circulation models. All show the projected fingerprint of anthropogenic greenhouse-gas warming: the tropical mid-troposphere “hot-spot” is projected to warm at twice or even thrice the surface rate. <strong>Source:</strong> Lee et al. (2007).</em></p>
<p>However, as Douglass <em>et al.</em> (2004) and Douglass <em>et al.</em> (2007) have demonstrated, the projected fingerprint of anthropogenic greenhouse-gas warming in the tropical mid-troposphere is not observed in reality. Figure 6 is a plot of observed tropospheric rates of temperature change from the Hadley Center for Forecasting. In the tropical mid-troposphere, at approximately 300 hPa pressure, the model-projected fingerprint of anthropogenic greenhouse warming is absent from this and all other observed records of temperature changes in the satellite and radiosonde eras:</p>
<p style="text-align:left;"><strong>Figure 6</strong></p>
<p style="text-align:left;"><strong>The absent fingerprint of anthropogenic greenhouse warming</strong></p>
<p style="text-align:left;"><strong><img src="http://www.aps.org/units/fps/newsletters/200807/images/figure6.gif" border="0" alt="figure 6" width="605" height="383" /><br />
</strong></p>
<p><em>Altitude-vs.-latitude plot of observed relative warming rates in the satellite era. The greater rate of warming in the tropical mid-troposphere that is projected by general-circulation models is absent in this and all other observational datasets, whether satellite or radiosonde. Altitude units are hPa (left) and km (right). <strong>Source:</strong> Hadley Centre for Forecasting (HadAT, 2006).</em></p>
<p>None of the temperature datasets for the tropical surface and mid-troposphere shows the strong differential warming rate predicted by the IPCC’s models. Thorne <em>et al.</em> (2007) suggested that the absence of the mid-tropospheric warming might be attributable to uncertainties in the observed record: however, Douglass <em>et al.</em> (2007) responded with a detailed statistical analysis demonstrating that the absence of the projected degree of warming is significant in all observational datasets.</p>
<p>Allen <em>et al.</em> (2008) used upper-atmosphere wind speeds as a proxy for temperature and concluded that the projected greater rate of warming at altitude in the tropics is occurring in reality. However, satellite records, such as the RSS temperature trends at varying altitudes, agree with the radiosondes that the warming differential is not occurring: they show that not only absolute temperatures but also warming rates decline with altitude.</p>
<p>There are two principal reasons why the models appear to be misrepresenting the tropical atmosphere so starkly. First, the concentration of water vapor in the tropical lower troposphere is already so great that there is little scope for additional greenhouse-gas forcing. Secondly, though the models assume that the concentration of water vapor will increase in the tropical mid-troposphere as the space occupied by the atmosphere warms, advection transports much of the additional water vapor poleward from the tropics at that altitude.</p>
<p>Since the great majority of the incoming solar radiation incident upon the Earth strikes the tropics, any reduction in tropical radiative forcing has a disproportionate effect on mean global forcings. On the basis of Lindzen (2007), the anthropogenic-ear radiative forcing as established in Eqn. (3) are divided by 3 to take account of the observed failure of the tropical mid-troposphere to warm as projected by the models –</p>
<p><em>ΔF</em><sub>2x</sub>≈ 3.405 / 3 ≈ 1.135 W m<sup>–2</sup>. (17)</p>
<p><strong>The “no-feedbacks” climate sensitivity parameter</strong> <strong><em>κ</em></strong> <strong>reconsidered</strong></p>
<p>The base climate sensitivity parameter <em>κ</em>is the most influential of the three factors of <em>ΔT</em><em><sub>λ</sub></em>: for the final or “with-feedbacks” climate sensitivity parameter <em>λ</em> is the product of <em>κ</em>and the feedback factor <em>f</em>, which is itselfdependent not only on the sum <em>b</em> of all climate-relevant temperature feedbacks but also on <em>κ</em><em>.</em>Yet <em>κ</em> has received limited attention in the literature. In IPCC (2001, 2007) it is not mentioned. However, its value may be deduced from hints in the IPCC’s reports. IPCC (2001, ch. 6.1) says:</p>
<p class="MsoNormal">“The climate sensitivity parameter (global mean surface temperature response <em>Δ</em><em>T<sub>S</sub></em> to the radiative forcing <em>Δ</em><em>F</em>) is defined as <em>Δ</em><em>T<sub>S</sub></em> / <em>Δ</em><em>F</em> = <em>λ</em> {6.1} (Dickinson, 1982; WMO, 1986; Cess<em>et al</em>., 1993). Equation {6.1} is defined for the transition of the surface-troposphere system from one equilibrium state to another in response to an externally imposed radiative perturbation. In the one-dimensional radiative-convective models, wherein the concept was first initiated, <em>λ</em>is a nearly invariant parameter (typically, about 0.5 °K W<sup>−</sup><sup>1</sup> m<sup>2</sup>; Ramanathan<em>et al</em>., 1985) for a variety of radiativeforcings, thus introducing the notion of a possible universality of the relationship between forcing and response.”</p>
<p>Since <em>λ</em>= <em>κf</em> = <em>κ</em>(1 – <em>bκ</em>)<sup>–1</sup> (Eqns. 1, 2), where <em>λ</em> = 0.5 °K W<sup>–1</sup> m<sup>2</sup> and <em>b</em> ≈ 2.16 W m<sup>–2</sup> °K<sup>–1</sup> (Eqn. 12), it is simple to calculate that, in 2001, one of the IPCC’s values for <em>f</em> was 2.08. Thus the value <em>f</em> = 3.077 in IPCC (2007) represents a near-50% increase in the value of <em>f</em> in only five years. Where <em>f =</em> 2.08, <em>κ</em> = <em>λ</em> / <em>f</em> ≈ 0.5 / 2.08 ≈ 0.24 °K W<sup>–1</sup> m<sup>2</sup>, again substantially lower than the value implicit in IPCC (2007). Some theory will, therefore, be needed.</p>
<p>The fundamental equation of radiative transfer at the emitting surface of an astronomical body, relating changes in radiant-energy flux to changes in temperature, is the Stefan-Boltzmann equation –</p>
<p><em>F =</em> <em>ε σ</em> <em>T</em><sup>4</sup> W m<sup>–2</sup>, (18)</p>
<p>where<em>F</em> is radiant-energy flux at the emitting surface; <em>ε</em>is emissivity, set at 1 for a blackbody that absorbs and emits all irradiance reaching its emitting surface (by Kirchhoff’s law of radiative transfer, absorption and emission are equal and simultaneous), 0 for a whitebody that reflects all irradiance, and (0, 1) for a graybody that partly absorbs/emits and partly reflects; and σ ≈ 5.67 x 10<sup>–8</sup> is the Stefan-Boltzmann constant.</p>
<p>Differentiating Eqn. (18) gives –</p>
<p><em>κ</em>=<em>dT / dF</em>= <em>(dF / dT)</em><sup>–1</sup>=(4 <em>ε σ T</em><sup>3</sup>)<sup>–1</sup> °K W<sup>–1</sup> m<sup>2</sup>. (19)</p>
<p>Outgoing radiation from the Earth’s surface is chiefly in the near-infrared. Its peak wavelength <em>λ</em><sub>max</sub> is determined solely by the temperature of the emitting surface in accordance with Wien’s Displacement Law, shown in its simplest form in Eqn. (20):</p>
<p><em>λ</em><sub>max</sub>= 2897 / <em>T<sub>S</sub></em> = 2897 / 288 ≈ 10 μm. (20)</p>
<p>Since the Earth/troposphere system is a blackbody with respect to the infrared radiation that Eqn. (20) shows we are chiefly concerned with, we will not introduce any significant error if ε = 1, giving the blackbody form of Eqn. (19) –</p>
<p><em>κ</em>= <em>dT / dF</em> = (4<em>σ</em> <em>T</em><sup>3</sup>)<sup>–1</sup> °K W<sup>–1</sup> m<sup>2</sup>. (21)</p>
<p>At the Earth’s surface, <em>T<sub>S</sub></em>≈ 288 °K, so that <em>κ</em><em><sub>S</sub></em>≈ 0.185 °K W<sup>–1</sup> m<sup>2</sup>. At the characteristic-emission level, <em>Z<sub>C</sub>,</em> the variable altitude at which incoming and outgoing radiative fluxes balance, <em>T<sub>C</sub></em>≈ 254 °K, so that <em>κ<sub>C</sub></em> ≈ 0.269 °K W<sup>–1</sup> m<sup>2</sup>. The value <em>κ<sub>C</sub></em> ≈ 0.24, derived from the typical final-sensitivity value <em>λ</em> = 0.5 given in IPCC (2001), falls between the surface and characteristic-emission values for <em>κ</em>.</p>
<p>However, the IPCC, in its evaluation of <em>κ</em>, does not follow the rule that in the Stefan-Boltzmann equation the temperature and radiant-energy flux must be taken at the same level of the atmosphere. The IPCC’s value for <em>κ</em> is dependent upon temperature at the surface and radiant-energy flux at the tropopause, so that its implicit value <em>κ</em>≈ 0.313 °K W<sup>–1</sup> m<sup>2</sup> is considerably higher than either <em>κ<sub>S</sub></em> or <em>κ<sub>C</sub></em>.</p>
<p>IPCC (2007) cites Hansen <em>et al.</em> (1984), who say –</p>
<p class="MsoNormal">“Our three-dimensional global climate model yields a warming of ~4 ºC for … doubled CO<sub>2</sub>. This indicates a net feedback factor <em>f</em>= 3-4, because [the forcing at CO<sub>2</sub> doubling] would cause the earth's surface temperature to warm 1.2-1.3 ºC to restore radiative balance with space, if other factors remained unchanged.”</p>
<p>Hansen says <em>dF</em><sub>2x</sub> is equivalent to a 2% increase in incoming total solar irradiance (TSI). Top-of-atmosphere TSI <em>S</em> ≈ 1368 W m<sup>2</sup>, albedo<em>α</em> = 0.31, and Earth’s radius is <em>r.</em> Then, at the characteristic emission level <em>Z<sub>C</sub></em>,<