Another slight cock-up by NASA.

[California Tanker]

Not that it really matters much in the scheme of things, but apparently a Y2K bug in NASA's system only just got spotted. This was the reporting mechanism/algorythm created by Reto Ruedy and James Hansen (The latter subsequently coming to fame in the Administration controversy) to determine mean global temperature over the last century.

Upon being emailed by a chap at climateaudit.org who spotted the anomoly in the figures, Ruedy acknowledged the oversight. NASA has since released new figures.

http://data.giss.nasa.gov/gistemp/graphs/Fig.D.txt

Basically, it rearranges the 'top ten' list for 'warmest year on record.' Most of it is simple rearranging, the only note is that 2001 drops off the top ten, replaced by 1939.

OLD______NEW
1998_____1934
1934_____1998
2006_____1921
1921_____2006
1931_____1931
1999_____1999
1953_____1953
2001_____1990
1990_____1938
1938_____1939


I have no idea if the full analysis of all the years does anything to the larger trend, I'm sure some statistician will come up with a new graph eventually.

NTM

[fragment]

It needs to be pointed out that the error, and subsequent correction, was in the data for the US temperature, not the estimate of global temperature. Be careful about that when talking about "the warmest year on record".

ClimateAudit seems to be down at the moment, but from other reading it seems we're talking about a reduction of 0.1 - 0.2 degrees C in the estimates for post-2000 average annual temperatures of the US.

Here's the updated US temperature plot (http://data.giss.nasa.gov/gistemp/graphs/Fig.D_lrg.gif).

edit - that image seems to have disappeared, but there's a smaller version of it on this page (http://data.giss.nasa.gov/gistemp/graphs/)

[The Lone Ranger]

Countdown until some fruitcake declares that this proves there's no such thing as Global Warming:

5 ... 4 ... 3 ... 2 ...

[JoeP]

This proves there's no such thing as global warming.
:fruit:

[fragment]

Countdown until some fruitcake declares that this proves there's no such thing as Global Warming:

5 ... 4 ... 3 ... 2 ...
They were doing it before you made that post. I'd already seen a few bizarre claims like "global warming is falsified for the US".