Michael Mann first of climate change scientists to be investigated

The fallout from the Climategate event continues as one of its primary participants, Dr. Michael Mann, is to be investigated by his employer, Penn State University. Among the more than one thousand emails released on the Internet, Mann featured prominently in many of them oftentimes making rather controversial comments.

Mann serves as the director of the Earth System Science Center at Penn State and has long been one of the more controversial figures in the debate about manmade climate change. He is the author of the infamous 'hockey stick' graph which was used by Al Gore in "An Inconvenient Truth" but later was proven to be inaccurate....

...a report from Dr. Edward Wegman that provided a different opinion. Wegman's report said, "Mann et al., misused certain statistical methods in their studies, which inappropriately produce hockey stick shapes in the temperature history. Wegman's analysis concludes that Mann's work cannot support claim that the1990s were the warmest decade of the millennium. "...

Phil Jones:
Dear Ray, Mike and Malcolm,
Once Tim's got a diagram here we'll send that either later today or
first thing tomorrow.
I've just completed Mike's Nature trick of adding in the real temps
to each series for the last 20 years (ie from 1981 onwards) amd from
1961 for Keith's to hide the decline. Mike's series got the annual
land and marine values while the other two got April-Sept for NH land
N of 20N. The latter two are real for 1999, while the estimate for 1999
for NH combined is +0.44C wrt 61-90. The Global estimate for 1999 with
data through Oct is +0.35C cf. 0.57 for 1998.
Thanks for the comments, Ray.


NASA to Mann:
In my (perhaps too harsh)
view, there have been a number of dishonest presentations of model
results by individual authors and by IPCC. This is why I still use
results from MAGICC to compare with observed temperatures. At least
here I can assess how sensitive matches are to sensitivity and
forcing assumptions/uncertainties.