Flaws discovered in Gavin Schmidt’s new climate paper, not so ‘marvel’ous after all

Watts Up With That?

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Bishop Hill writes:

Over at Climate Audit, Nic Lewis has outlined the latest developments in the saga of the Marvel et al paper, which claimed to have demonstrated that climate sensitivity is low, but appeared to have a whole series of problems, not least of which that it had got its forcing data mucked up, leaving out land-use changes entirely.

In a typically erm…robust article at RealClimate, Gavin Schmidt ignored all the evidence Lewis had presented showing that land-use change had been overlooked, and said that Lewis’s critique was made…without evidence. However, it now seems that he has decided that this position is not tenable, at the journal at least,and a correction has been issued admitting that land-use was indeed missing.

The historical instantaneous radiative forcing time series was also updated to reflect land use change, which was inadvertently excluded from the forcing originally calculated from ref…

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