date: Fri Jan  5 13:31:40 2001
from: Keith Briffa <k.briffa@uea.ac.uk>
subject: Synthesis
to: "Raymond S. Bradley" <rbradley@geo.umass.edu>

   Here is the Figure for the N.Atlantic for the last 1000 years as I have it now. From top to
   bottom - Central England Temperature ANNUAL
                                        Lutterbacher's NAO DEC-MARCH (largely instrumental
   based , including CET anyway)
                                        Van Englen's Dutch Temperature index - turned into a
   pseudo annual series)
                                        My Tornetrask Reconstruction SUMMER HALF YEAR
                                        Bianchi and McCave's deepwater flow
                                        Irish bog wetness - dry up
                                        New (Reworked ) Sargasso SST
                                        GISP2 018
                                        GRIP ditto
                                        Fisher's west Greenland Stack
                                        Aggassi ice melt
   All normalised over a common period . What do you think? I am tempted to  average GRIP and
   GISP ? I will phone as I am still uncertain about the Figures.
   Keith
   At 08:10 AM 1/5/01 -0500, you wrote:

     I am working on incorporating a discussion of borehole data into the chapter right now.
     It's complicated.....as far as I know, the ice core borehole data are limited --just one
     published from GRIP, one from Agassiz (Canadian High Arctic) and an abstract re
     "contradictory" (warm LIA/cold MWP) data from Taylor Dome versus another Antarctic
     site.  Yet the Dahl-Jenssen GRIP curve is impressive, and Pollack (pers. comm.) tells me
     that he has terrestrial borehole data -- v. low resolution & limited--that nevertheless
     looks much like the GRIP record for the Holocene....I don't think the borehole data are
     so easy to dismiss...it requires a detailed site-by-site comparison of proxy v. borehole
     as Beltrami has done for limited regions.
     To answer your questions, Black's data are at NGDC --poke around there.
     I got the NAO maps this a.m.--they need to be in colour.
     My Lofoten project was funded and I'll do fieldwork there in August, with Jon Pilcher.
     Tim can be a co-author.  Yes, get him to work on the trends/detection part asap.
     In the text that we now have, I believe the figure comparison (mann et al/Briffa et al
     etc) is discussed in the context of the last millennium.  So we should revise the fig.,
     he sent to cover that period.  I'm not averse to also using the one he sent in the
     section re past v. future warming.  Right now we just use Mann et al. there, but putting
     both figs., with the error bars etc as he has done is fine too.  But I'd still like to
     see the other scaled figure.
     I'm here at home:413-253-7058-if further questions
     ray
     At 11:44 AM 1/5/01 +0000, you wrote:

     Ray
     In what context are you/we refering to The Dahl -Jensen curve .? I sending you the
     working version of the Figure on circum North Atlantic climate variability via Mike
     here. I am still undecided about the precise ice core data to show and Hammer has still
     not sent the north GRIP record that I really wish to include. I am also hassling others
     for data (high res marine record near Norway; Finnish lake core data) . Do you have
     Black's data? Tim has sent you the NAO maps that I wish to work into the North Atlantic
     bit. What became of your Lofoten project ? I would like to do comparisons
     with any data against our tree ring and other records. Also I need your confirmation
     that Tim here can be added to the author list . I want to get him to redo the detection
     bit with the new data. Also , why did you tell him to cut off the projected temperatures
     from that Figure ? I thought that was exactly what we agreed to include  - note also the
     different rates of warming for the annual land and marine as opposed to summer land .
     They are large .  If you use the composite Figure of the various reconstructions in your
     Senate piece , please get the citation to my JGR paper correct. I am working on our
     PAGES paper, plus t=Phil's Science paper and I have to do an EC report, EC proposal and
     teaching all this month - so I am awarwe and you honestly don't need to give me more
     than the occasional prod. I LEAVE THE OFFICE AT 3.45 my time today , so quick reply
     appreciated Best wishes
     Keith
     --
     Dr. Keith Briffa, Climatic Research Unit, University of East Anglia,
     Norwich, NR4 7TJ, United Kingdom
     Phone: +44-1603-593909    Fax: +44-1603-507784

     Raymond S. Bradley
     Professor and Head of Department
     Department of Geosciences
     University of Massachusetts
     Amherst, MA 01003-5820
     Tel: 413-545-2120
     Fax: 413-545-1200
     Climate System Research Center: 413-545-0659
     Climate System Research Center Web Page:
     <[1]http://www.geo.umass.edu/climate/climate.html>
     Paleoclimatology Book Web Site (1999): [2]http://www.geo.umass.edu/climate/paleo/html

   --
   Dr. Keith Briffa, Climatic Research Unit, University of East Anglia,
   Norwich, NR4 7TJ, United Kingdom
   Phone: +44-1603-593909    Fax: +44-1603-507784

