Guest guest Posted February 20, 2005 Report Share Posted February 20, 2005 " Zepp " <zepp Sat, 19 Feb 2005 08:04:53 -0800 [Zepps_News] Twin studies provide " smoking gun " on issue of global warming http://www.timesonline.co.uk/article/0,,3-1489955,00.html The strongest evidence yet that global warming has been triggered by human activity has emerged from a major study of rising temperatures in the world's oceans. The present trend of warmer sea temperatures, which have risen by an average of half a degree Celsius (0.9F) over the past 40 years, can be explained only if greenhouse gas emissions are responsible, new research has revealed. The results are so compelling that they should end controversy about the causes of climate change, one of the scientists who led the study said yesterday. " The debate about whether there is a global warming signal now is over, at least for rational people, " said Tim Barnett, of the Scripps Institution of Oceanography in La Jolla, California. " The models got it right. If a politician stands up and says the uncertainty is too great to believe these models, that is no longer tenable. " In the study, Dr Barnett's team examined more than seven million observations of temperature, salinity and other variables in the world's oceans, collected by the US National Oceanic and Atmospheric Administration, and compared the patterns with those that are predicted by computer models of various potential causes of climate change. It found that natural variation in the Earth's climate, or changes in solar activity or volcanic eruptions, which have been suggested as alternative explanations for rising temperatures, could not explain the data collected in the real world. Models based on man-made emissions of greenhouse gases, however, matched the observations almost precisely. " What absolutely nailed it was the greenhouse model, " Dr Barnett told the American Association for the Advancement of Science conference in Washington. Two models, one designed in Britain and one here in the US, got it almost exactly. We were stunned. They did it so well it was almost unbelieveable. " Climate change has affected the seas in different ways in different parts of the world: in the Atlantic, for example, rising temperatures can be observed up to 700 metres below the surface, while in the Pacific the warming is seen only up to 100m down. Only the greenhouse models replicated the changes that have been observed in practice. " The fact that this has gone on in different ways gives us the chance to figure out who did it, " Dr Barnett said. " All the potential culprits have been ruled out except one. " This is perhaps the most compelling evidence yet that global warming is happening right now, and it shows that we can successfully simulate its past and its likely future evolution. The statistical significance of these results is far too strong to be merely dismissed and should wipe out much of the uncertainty about the reality of global warming. " [...] " The debate about whether there is a global warming signal now is over, at least for rational people. " Oops! That rules out a lot of conservatives on usenet. -- Election 2004 The Triumph of the Swill " The National Government will regard it as its first and foremost duty to revive in the nation the spirit of unity and cooperation. It will preserve and defend those basic principles on which our nation has been built. It regards Christianity as the foundation of our national morality, and the family as the basis of national life. " Adolph Hitler, My New World Order, Proclamation to the German Nation at Berlin, February 1, 1933 Not dead, in jail, or a slave? Thank a liberal! Pay your taxes so the rich don't have to. http://www.zeppscommentaries.com For news feed, http:////zepps_news For essays (please contribute!) http://zepps_essays Quote Link to comment Share on other sites More sharing options...
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