Tag Archives: sensitivity

Non-centring in the Forest 2006 study

This is a cautionary tale, about a mystery that had an unexpected explanation. It’s not intended as a criticism of the scientists involved, and the problem involved, although potentially serious, actually had little impact on the results of the study concerned. However, I am hopeful that mathematically and computing orientated readers will find it of […]

New Nic Lewis Paper

Nic Lewis’s paper on climate sensitivity is available. See his BH post here. Also see discussion at Judy Curry and WUWT.

Nic Lewis on Forest et al 2006

Myles Allen recently asked that more attention be paid by critics to work on climate sensitivity, rather than paleoclimate. Nic Lewis, a coauthor of O’Donnell et al 2010, has been parsing climate sensitivity calculations for some time and with considerable frustration. Nic Lewis has a very important article at Judy Curry’s here. One of the […]

Monthly Centering and Climate Sensitivity

In our recent discussion of Dessler v Spencer, UC raised monthly centering as an issue in respect to the regressions of TOA flux against temperature. Monthly centering is standard practice in this branch of climate science (e.g. Forster and Gregory 2006, Dessler 2010), where it is done without any commentary or justification. But such centering […]

Nic Lewis on IPCC Climate Sensitivity

Nic Lewis (a co-author of O’Donnell et al 2010) is a very sharp analyst who’s recently taken an interest in climate sensitivity estimates and has an interesting guest post at Judy Curry’s today. In his studies, he noticed that the IPCC’s representation in AR4 Figure 9.20 of the probability distribution for climate sensitivity arising from […]


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