By Steve Goddard

Dr. John Christy recently wrote an excellent piece “Is Jim Hansen’s Global Temperature Skillful?” which highlighted how poorly Dr. Hansen’s past predictions are doing.

This post raises questions about GISS claims of record 2010 temperatures. The most recent GISS graph below shows nearly constant warming from 1965 to the present, with 2010 almost 0.1°C warmer than the actual warmest year of 1998.

HadCrut disagrees. They show temperatures flat over the past decade. and 2010 about 0.1°C cooler than the warmest year 1998.

Looking more closely, the normalised plot below shows trends from Jan 1998 to the present for GISS, HadCrut, UAH and RSS

GISS shows much more warming than anybody else during that period. Hansen claims :

The difference of +0.08°C compared with 2005, the prior warmest year, is large enough that 2010 is likely, but not certain, to be the warmest year in the GISS record.

The discrepancy with the other data sources is larger than Hansen’s claimed 0.08 record. Is it a record temperature, or is it good old fashioned bad data?

Either way, it is still far below Hansen’s projected temperatures for 2010. This is not pretty science.

Hansen made temperature forecasts which have proven too high. Now his “measured” temperature data is pushing higher than everyone else. Would you accept the other team’s coach doing double duty as the referee? In what other profession would people accept this sort of conflict of interest?

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