Dr. Benny Peiser 20.08.2010 11:12 +Feedback
It’s Official: Russische Hitzewelle unabhängig vom Klimawandel
National Oceanic and Atmospheric Administration: What has been the role of human-induced climate change in the Russian heat wave of 2010? As indicated at the beginning of this report, globally averaged surface temperatures during the first 6 months of 2010 were the warmest since about 1880 based on NOAA and NASA analyses… Despite this strong evidence for a warming planet, greenhouse gas forcing fails to explain the 2010 heat wave over western Russia. The natural process of atmospheric blocking, and the climate impacts induced by such blocking, are the principal cause for this heat wave. It is not known whether, or to what exent, greenhouse gas emissions may affect the frequency or intensity of blocking during summer. It is important to note that observations reveal no trend in a daily frequency of July blocking over the period since 1948, nor is there an appreciable trend in the absolute values of upper tropospheric summertime heights over western Russia for the period since 1900. Full analysis here.
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