cc: mann@virginia.edu
date: Mon, 08 Dec 2003 08:37:25 -0500
from: "Michael E. Mann" <mann@virginia.edu>
subject: Fwd: Re: data access
to: Tim Osborn <t.osborn@uea.ac.uk>, Michael Oppenheimer <omichael@Princeton.EDU>, Phil Jones <p.jones@uea.ac.uk>, Keith Briffa <k.briffa@uea.ac.uk>, <rbradley@geo.umass.edu>, <mhughes@ltrr.arizona.edu>, Tom Wigley <wigley@meeker.UCAR.EDU>, tom crowley <tom@ocean.tamu.edu>, Gabi Hegerl <hegerl@duke.edu>, Jonathan Overpeck <jto@u.arizona.edu>, rbradley@geo.umass.edu, mhughes@ltrr.arizona.edu

     Date: Fri, 05 Dec 2003 13:39:00 -0500
     To: "Verardo, David J." <dverardo@nsf.gov>
     From: "Michael E. Mann" <mann@virginia.edu>
     Subject: Re: data access
     Cc: mann@virginia.edu
     Dear Dave,
     Thanks for your inquiry.
     As we encourage any good-faith attempts by other scientists to repeat our analysis, we
     have indeed already made the data associated with our NSF-funded research which includes
     the Mann et al, 1998 Nature article ('MBH98'); Mann et al, 1999 GRL article ('MBH99'),
     and Mann et al, 2000 Earth Interactions article, available publicly.
     All of the time series data shown in MBH98 (the hemispheric temperature reconstruction
     and uncertainties, the reconstructed principal components "RPC" series, etc) were made
     available both on this website:
     [1]http://www.people.virginia.edu/~mem6u/mbh98.html
     and through the NOAA paleo data site:
     [2]http://www.ngdc.noaa.gov/paleo/pubs/mann1998/frames.htm
     at the time of publication.
     All data (proxy indicators used and the reconstructions and uncertainties) associated
     with MBH99 were made available at the time of publication, here:
     [3]http://www.people.virginia.edu/~mem6u/mbh99.html
     as well as here:
     [4]ftp://ftp.ngdc.noaa.gov/paleo/contributions_by_author/mann1999/
     We then made  the detailed yearly spatial reconstructions available  in 2000 at the NOAA
     paleo website:
     [5]http://www.ngdc.noaa.gov/paleo/ei/ei_cover.html
     From the time of publication of MBH98, a listing of all of the proxy data (with some
     minor typos) was provided here:
     [6]ftp://eclogite.geo.umass.edu/pub/mann/ONLINE-PREPRINTS/MultiProxy/data-supp.html
     while details of the number of proxy indicators used in the stepwise reconstruction
     approach were provided here:
     [7]ftp://eclogite.geo.umass.edu/pub/mann/ONLINE-PREPRINTS/MultiProxy/stats-supp.html
     and the instrumental temperature data, including eigenvectors and eigenvalues, and
     instrumental series shown in the various figures, were provided here:
     [8]ftp://eclogite.geo.umass.edu/pub/mann/MANNETAL98/
     All of the proxy data used in MBH98 were made available on our public ftp site once the
     various researchers that contributed data to our network were able to publish their own
     data (July 2002). The data (all individual proxy indicators used as well as the various
     PC representations of proxy sub networks for different time intervals) were provided in
     the various clearly labeled directories here:
     [9]ftp://holocene.evsc.virginia.edu/pub/MBH98/
     We provided extensive documentation of the data sets used in the supplementary
     information lodged at Nature's web site in association with the publication of MBH98, so
     that those wishing to repeat our analyses could either go to the same public domain
     sources as us, or approach the colleagues who had kindly made data available to us. We
     made considerable efforts to make the various data and numerical results readily
     available online as soon as we were free to do so (in 2002), by setting up the public
     ftp site referred to above, although we were under no known obligation to provide the
     data in that particular medium. We gave as detailed a description of our methods as was
     possible in the confines of a short paper, and in all these respects must have satisfied
     the stringent standards set by the editor and reviewers of the journal in which we
     published.
     In order to facilitate any attempt to reproduce our results we are now taking a further
     step beyond those normally required in the publication of such research. We are working
     with Nature to provide the MBH98 proxy data set in a more  transparent, user-friendly
     format than that set up in 2002, including additional documentation, fixing of minor
     typos in the descriptions of different datasets, and providing some additional minor
     methodological details of the MBH98 analysis. We are also providing the full raw
     instrumental University of East Anglia/Climatic Research Unit surface temperature
     dataset 1854-1993 (Briffa and Jones, 1992), because CRU has since updated their surface
     temperature dataset, and no longer archives the version that we used when we began our
     study in the mid 1990s.
     Please let me know if there is any additional information I can provide you that would
     be of help in this matter. I will of course update you once we/Nature have released the
     revised data archive.
     Best regards,
     mike
     At 11:31 AM 12/5/2003 -0500, you wrote:

     Dear Mike,
     With regards to the recent request made by Stephen McIntyre and Ross
     McKitrick for access to data that you and your colleagues used in a series
     of peer-reviewed publications, please let me how and when you are planning
     to release the data relevant to their request.
     Thanks in advance for your help.
     Dave
     David J. Verardo
     Director, Paleoclimate Program
     Division of Atmospheric Sciences (Room 775)
     National Science Foundation
     4201 Wilson Blvd.
     Arlington, VA  22203
     phone: 703-292-8527
     fax: 703-292-9023
     email: dverardo@nsf.gov
     [10]http://www.nsf.gov

     ______________________________________________________________
                         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
              [11]http://www.evsc.virginia.edu/faculty/people/mann.shtml

   ______________________________________________________________
                       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
            [12]http://www.evsc.virginia.edu/faculty/people/mann.shtml

