Black Tuesday of Climate Science

Climate Audit

wmo913
Today I will review the timeline of the above WMO 1999 graph in the light of the ClimateGate (CG) letters. The main events took place on Tuesday, November 16th, 1999.

Things start rolling 9 AM (UK time), when Tim Osborn sends  the new Briffa and recalibrated Jones (1998) time series to Phil Jones along with the suggestion to hide the decline.

It is ready calibrated in deg C wrt. 1961-90, against the average Apr-Sep land temperature north of 20N.  It goes from 1402 to 1994 – but you really ought to replace the values from 1961 onwards with observed temperatures due to the decline.

Twenty minutes later Jones writes  to the MBH crew (cc Briffa and Osborn) explaining exactly what the graph will look like.

WMO want to go with the millennial record on the cover and I said I would produce something and some text. The figure…

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