date: Tue, 09 Jan 2001 11:38:56 -0500 from: David Fisher subject: Re: stacked data for Greenland question to: Keith Briffa Dear Keith I did the analysis of the various Greenland and canadian ice core redords and came to the conclusion that there are real regional differences,,, I am going to send you the data package and paper that covers the stuff,,it also contains most of the accumulation data that is available,,,, so its a coming,,, by real mail eh,,, The Holocene deltas you can no doubt get on 20 year averages ,,as Claus published already but according to Sigfus the annual stuff over the last few 1000 yrs is not ready to go,,because the time scale is not fixed yet. David Keith Briffa wrote: > > Hi Dave > I really appreciate your help with this. The bottom line I wanted to make > in our piece was that there were differences in the summit,west and north > GRIP data that might reflect real regional differences in received climate > input. That is why I would prefer to use a GRIP/GISP mean , a west > Greenland (stack?) , and the north series next to each other. The North > grip data are already "outed" because Claus published them in a paper he > did for the Hanse Conference last year. Other than the greater Holocene > trend , they show a "warmer" 20th century than the others. I did not > realise that there was such strife in the Danish camp but I will ask Sigfus > anyway. I only want the last 1000 years . Similarly you didn't confirm what > Canadian data you would select as representative of this period as regards > temperature and precipitation. I just have the melt data in at the moment , > but only back to A.D.1250.Could you send the west Greenland only 018 data? > I wrote to Ellen about accumulation data for west Greenland but got no > response yet. > > At 04:19 PM 1/8/01 -0500, you wrote: > > >Dear Keith > > The word on NGRIP o-18 time series is that the annual stuff is not > >ready to go yet because the seasonals have been too hard to pick up > >,,hence its slower to date on an annual basis. But soonish. > > The 20 year averages on a theoretical time scale is coming out very > >soon in JGR and I have been given a "for your eyes only" from Sigfus. He > >did send them though,, and he would possibly do the same for you ,, if > >you promised to sit on it until after the JGR paper was out,,, In any > >case Sigfus has given me the one but not the other , but enjoined > >secrecy,, so try him direct . > > > > David > > -- > Dr. Keith Briffa, Climatic Research Unit, University of East Anglia, > Norwich, NR4 7TJ, United Kingdom > Phone: +44-1603-593909 Fax: +44-1603-507784