Vice Chair of IPCC Breaks Global Warming Consensus

19 de abril de 2007

<body><div id="article"><tr><td height="28" valign="middle" width="184"></td><td valign="middle" width="185"></td></tr><h1>Vice Chair of IPCC Breaks Global Warming Consensus</h1><p>April 19, 1500EDT (EIRNS)--The much-vaunted consensus over global warming shattered like ice yesterday, when the Russian vice chairman of the Intergovernmental Panel on Climate Change (IPCC) penned an op-ed for Ria Novosti news agency questioning the "panic over global warming."</p><p>"I think the panic over global warming is totally unjustified. There is no serious threat to the climate," wrote Academician of the Russian Academy of Sciences Yuri Izrael in a commentary published by RIA Novosti April 18. Academician Izrael is the head of the Institute of Global Climate and Ecology in Russia, and one of three vice-chairmen of the IPCC, the international body whose reports have claimed that human-induced global warming is a scientific certainty.</p><p>"There is no need to dramatize the anthropogenic impact, because the climate has always been subject to change under Nature's influence, even when humanity did not even exist," Izrael wrote. He does not dismiss that there are changes in climate going on, but writes that "we are more threatened by the cold than by global warming."</p><p>If it becomes necessary to deal with warming, Izrael argues, controlling human use of CO2 is not an effective means. "Instead, it makes sense to decrease solar radiation by 0.3%-0.5%." This can be most effectively done using stratosphere-based aerosols, and Russian scientists are now studying how to do this, Izrael says.</p><p>Reducing CO2 emissions will both take much too long, and be extremely expensive-- about $18 trillion this century. "The method of aerosol impact on the stratosphere is much cheaper, hundreds of times faster, and, if need be, can be easily stopped," Izrael argues.</p><p>"Way back in 1974 Russian scientist Mikhail Budyko came up with an idea that may resolve the global warming problem in several years," Izrael wrote. In 2005 Izrael proposed an article with concrete proposals along the same lines. Nobel Prize winner Paul Crutzen ignored his article, but made the same proposal a year later, Izrael wrote.</p><p>The idea is to change the "'meteorological sun constant'" by introducing into the lower stratosphere (at an altitude of 12km-16km) fine dispersed aerosols of sulfuric acid, for instance. This will decrease solar radiation on the Earth's surface and reduce the temperature in the troposphere by the required number of degrees. This is an instrument of climate change. "It goes without saying that this method should be approved by the world community. For the time being, Russian scientists are working at home - making detailed calculations for further tests," concludes Academician Izrael.</p></div></body>