cc: Annie_Petsonk@environmentaldefense.org, "raymond s.bradley" <rbradley@geo.umass.edu>, mhughes@ltrr.arizona.edu, Tim Osborn <t.osborn@uea.ac.uk>, "Phil Jones" <p.jones@uea.ac.uk>, Keith Briffa <k.briffa@uea.ac.uk>
date: Thu, 30 Oct 2003 07:02:45 -0500
from: "Michael E. Mann" <mann@virginia.edu>
subject: RE: Re: Fwd: Re: Editor's comments
to: "Loschnigg, Johannes (Govt Affairs)" <Johannes_Loschnigg@govt-aff.senate.gov>

   Dear Annie, Johannes,
   There is a late breaking development. It now looks, upon closer and closer reading, as if
   M&M, very subtly, dropped the key indicators of the Mann et al (1998) network from the
   period AD 1400-1600 in the reconstruction that they performed based on their own supposed
   'version' of the Mann et al network--thats the version that has the huge spike between
   1400-1600 (recall that the authors analysis using the Mann et al data network is wrong
   because of the data merge/scramble problems we've discussed before). The authors appear to
   generate the erroneous early warming spike by  dropping out the key proxy data from the
   Mann et al network that gives that  reconstruction its characteristic shape prior to 1600
   or so.
   They appear to have eliminated the  pre-1600 Western North American and Texas/Mexico data
   used by Mann et al (1998) based on the argument they couldn't find the older data in the
   public domain. This despite that fact the data is on NOAAs website and our public site. I'm
   working to confirm that w/ a 2nd opinion/read from various colleagues, but I'm almost sure
   this is true.
   If so, it constitutes intellectual dishonesty most foul indeed!
   Will update ASAP,
   mike

   ______________________________________________________________
                       Professor Michael E. Mann
              Department of Environmental Sciences, Clark Hall
                         University of Virginia
                        Charlottesville, VA 22903
   _______________________________________________________________________
   e-mail: mann@virginia.edu   Phone: (434) 924-7770   FAX: (434) 982-2137
            [1]http://www.evsc.virginia.edu/faculty/people/mann.shtml

