In article , says...

Eric, this is the website of a CEE-OH-TOO 'scientist' are you sure
that Idso isn't using degrees when he should use radians ;-)

Well, they do mention in their GRL paper with Robert Balling that they
adjust their data for area by using the cosine function...

Seriously, you should get your data directly from NASA or UAH,
anything from a fossil fool website is suspect. Look at what Idso
does with USHCN data, he throws away three or four decades of
data, ignores important corrections, and presents it one cherry
picked site at a time.

Actually, I did get my data from UAH, when I worked on my GRL paper,(which
you may recall). That's how I know the MSU LT data is limited to a range of
82.5S to 82.5N latitude. And, I noticed the spike in the high latitude SH
data in the UAH data at the same time. However, as I have no way to question
the accuracy of that data, I've not mentioned it before, except in a limited
way. I suppose one could test for the spike in the sonde data, however, I
also noticed that it appears to be centered over the West Antarctic Ice Sheet,
where there are no sonde stations......
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(Eric Swanson) wrote...
I just noticed an error in the Idsos' co2science web site .

Their presentation of the data from Spencer and Christy's MSU LT is flawed.

http://www.co2science.org/temperatures/msu.htm

The web page allows one to calculate temperature trends between different
years and also between various combinations of latitude and longitude.
They list minimum and maximum latitudes as "-90" and "90". The problem
is that the MSU LT data is only available between 82.5S and 82.5N.

Try the calculation with the latitude range of -90 and -75. Then try it
between -90 and -85.

And, yes, I'm reasonably sure that they are using the S & C product, but
version D, which looks almost identical to the current version 5.1 of the LT
The calculated global trend between 1979 and 2003 is +0.080 deg C/decade
close to that from S & C's web sit, which was +0.082 deg C/dec.

While one is at it, notice the big positive spike in 1980 for the data between
latitudes -85 and -75. That spike propagates thru the Southern Hemisphere
poleward of 45S. To see it, look at the data between -90 and -45. I suggest
that this spike causes the trend calculated for the entire SH to be smaller
than it would be if that spike were found to be an error and removed from S
& C's data set. For a part of 1980, only one MSU was in orbit, that on
NOAA 6.

--
Eric Swanson --- E-mail address: e_swanson(at)skybest.com :-)
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