Re: [asa] FW: Temperature Monitors Report Widescale Global Cooling

It all depends on whether you are talking about Hadley Center anomalies
(UEA-CRU) which are baseline 1961-1990 or NOAA Climate Prediction Center
anomalies which are baseline 1901-2000. Since the story in question used the
former I did my analysis based on the HadCrut3v data set. NOAA had a better
English description of what was going on for January 08 and that was why I
referenced them. You can check my work by finding the data set here:

http://www.cru.uea.ac.uk/cru/data/temperature/hadcrut3vgl.txt

The story used the non-variance adjusted data which can be found here:

http://www.cru.uea.ac.uk/cru/data/temperature/hadcrut3gl.txt

FAQs for the CRU data is here:
http://www.cru.uea.ac.uk/cru/data/temperature/#faq

On Wed, Feb 27, 2008 at 2:08 PM, Randy Isaac <randyisaac@comcast.net> wrote:

> Rich,
> Help me understand this a bit better. You said "The anomaly is to the
> average of 1961-1990" but the link you provided says "The January global
> land surface average was below the 20th century mean for the first time
> since 1982." and the more detailed link on that page says:
>
> "Estimates of mean monthly global surface temperatures are given below
> with respect to the 20th century average (1901-2000). The figures are based
> on 1961-1990 estimates from the University of East Anglia's Climate
> Research Unit
> <http://www.ncdc.noaa.gov/cgi-bin/good-bye.pl?src=http://www.cru.uea.ac.uk/index.html&code=ncdc>(UEA-CRU).
> The recently derived 1961-1990 global monthly surface temperature averages
> represent, in our opinion, the best absolute estimates of global mean
> temperature and were compiled at UEA-CRU by M. New, P.D. Jones, D.E.
> Parker and others ."
>
> So I'm confused. Which is it, an anomaly to 1901-2000 or to 1961-1990?
>
> Randy
>

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Received on Wed Feb 27 16:43:41 2008