A response to Cox and Stockwell
May 20, 2011
Bishop Hill in Climate: Models

Retired geophysicist Geoff Davies has responded to the Cox and Stockwell article (discussed here) about Hansen's new paper on climate model representation of ocean heat uptake and mixing. He accuses them of misrepresenting Hansen.

The article contains basic misrepresentations of Hansen and of the substance and implications of a draft paper by Hansen.

The Hansen paper does not weaken the case that humans are the main cause of global warming. On the contrary, it suggests we have unwittingly and temporarily shielded ourselves from the full effects of our activities.

I've only whizzed through both the Cox/Stockwell and the Davies articles, but I think the difference is over the credibility of Hansen's explanation. Hansen is saying that ocean heat uptake has been overestimated, and therefore the reason we haven't seen much warming is that we must have got aerosols wrong too, with the two errors effectively having balanced each other out. Cox and Stockwell are saying that maybe the effect of CO2 is not as strong as previously thought.

Is that right?

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