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Friday, August 20, 2010

GISS Presents Some Revisions

NASA GISS has revised their surface temperature data and 1998 has been determined to be only tied for the fourth warmest year. For January-December their top years (relative to the 1951-1980 average) are now:

2005               +0.62°C
2007, 2009      +0.57°C
1998, 2002      +0.56°C
2003               +0.55°C
2006               +0.54°C

The NASA page doesn't give the uncertainty in these numbers -- they should -- so it's hard to see any real difference in positions 2-7.

Regardless -- it's been very, very warm lately.

Here's a paper that explains their recent revisions.

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