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Now one of the more cohesive studies to date, published by Penn State's Earth System Science Center, has offered up a factual analysis of exactly how much warming is occurring. Rather than focus on creative modeling often considered a refuge of global warming skeptics and alarmists alike, Penn state instead analyzed historic and contemporary data.
It found that the last 10 years for the Northern Hemisphere were the hottest in 1,300 years.
Among the extensive information used in the analysis were marine and lake sediment cores, ice cores, and coral cores.
Part of the paper's strength derives from its veritable who's who of climatologists and leading scientists -- Mann; Ray Bradley, university distinguished professor, geosciences and director, Climate System Research Center, University of Massachusetts; Malcolm Hughes, regents' professor, and Fenbiao Ni, research associate, the Laboratory of Tree Ring Research, University of Arizona; Zhihua Zhang and Sonya Miller, research associates, meteorology, Penn State; and Scott Rutherford, assistant professor, environmental sciences, Roger Williams University
Originally posted by Shere Khaan
This goes against the evidence cited that atmosphere temperatures have dropped in the last 10 years and was somewhat controversial.
The largest problem seems to be Mann has (yet again) chosen to use data that he knows (and even admits) is corrupted by influences other than climate -- Lake sediment in Finland, for instance. Rather than tossing out the spurious data, he "adjusts" it, by a novel statistical method he invents himself, and one that doesn't remove the signal at all.
Conservation group WWF has blamed climate change for the coldest August in Sydney for more than 60 years.
The freezing temperatures are proof of the urgent need to cut carbon pollution, according to WWF development and sustainability program manager Paul Toni.