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Willis E on Hansen and Model Reliability
Another interesting post from Willis: James Hansen of NASA has a strong defense of model reliability here In this paper, he argues that the model predictions which have been made were in fact skillful...
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Thoughts on Hansen et al 1988
Update (Jul 28, 2008): On Jan 18, 2008, two days after this article was posted, RSS issued a revised version of their data set. The graphics below are based on RSS versions as of Jan 16, 2008, the date...
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Hansen Scenarios A and B – Original
I’m making some changes to this post in light of comments from Gavin Schmift. The difference between Hansen Scenarios A and B occasioned a controversy involving Hansen and Pat Michaels in 1998, which...
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Hansen Scenarios A and B – Revised
This is a somewhat restated version of an earlier post seeking to understand the differences between Hansen Scenarios A and B. Rather than trying to clarify matters here, Gavin Schmidt posted over at...
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Hansen 1988: Details of Forcing Projections
During our discussions of the differences between Hansen Scenarios A and B – during which the role of CFCs in Scenario A gradually became clearer – the absence of a graph clearly showing the allocation...
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Hansen and Hot Summers in the Southeast
Hansen et al 1988 reported that they expected extra warming in the SE United States, a theme that was mentioned in his testimony in Washington in summer 1987. Hansen et al 1988 stated: there is a...
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Hansen Update
No single topic seems to arouse as much blog animosity as any discussion of Hansen’s projections. Although NASA employees are not permitted to do private work for their bosses off-hours (a currying...
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Mike’s AGU Trick
There has been considerable recent discussion of the fact that observations have been running cooler than models – see, for example, Lucia’s discussion of IPCC AR5 SOD Figure 9.8 (see here). However,...
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