116 Responses to Hansen: Humans have overwhelmed the natural, slow changes that occur on geologic timescales
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John Shade says:
There is the possibility here of a new bootstrap event. According to this post Real Science (http://www.real-science.com/understanding-man-global-warming) In the year 2000, Hansen and his buddies decided to give underachieving global warming a boost by adding 0.6 degrees on to the disappointing US data set. So perhaps the above claim of a rise of 0.8C thanks to his work at the Goddard Institute for Space Studies is a bit of an exaggeration. In either case, the bootstrap event whereby an observer gets extremely distressed by the data he has just created is worthy of further study.