date: Fri, 05 Jan 2001 08:10:06 -0500 from: "Raymond S. Bradley" subject: Re: to: Keith Briffa 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: Paleoclimatology Book Web Site (1999): http://www.geo.umass.edu/climate/paleo/html