Scientific Consensus on Climate Change; Climate Change Unequivocal; and more: EOS news from 20 Jan- 30 June 2009

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"Examining the Scientific Consensus on Climate Change", Vol. 90 No. 3, Jan 2009

Summary: According to the article, debate within the scientific community "on the authenticity of global warming and the role played by human activity is largely non-existent". The authors cite their recent study which polled 10,257 earth scientists (30.7% of which responded) on two questions asking whether they thought that post-industrial mean global temperatures had risen and whether human activity is a significant contributing factor in changing global temperatures. According to the results, 90% of respondents answered "yes" to question 1 and 82% answered "yes" to question 2.

"New Study for Climate Modeling, Analyses, and Scenarios", Vol. 90, No. 21, 26 May 2009

Summary: The ENSEMBLES project has developed a model of an aggressive mitigation scenario, E1, to provide policy makers with the latest climate information. The scenario uses the IPCC A1B scenario as a baseline and emissions reductions are through "changes to the energy system, non-CO2 gases, and afforestation."

"Climate Change Now Apparent and Unequivocal, New Report Warns", Vol. 90 No. 26, 30 June 2009

Summary: According to the new report "Global Climate Change Impacts in the United States" from the U.S. Golbal Change Research Program (USGCRP), anthropogenic global climate change is unequivocal and will have significant impacts on every region of the United States. The report stresses the necessity of immediate action in efforts to mitigate the anthropogenic sources of CO2.