From	Keith Briffa	Date	Tue Feb 3 14:30:38 2004
To	Rashit Hantemirov
Subject	Re[3]: Stephen McIntyre
Rashit thanks for these - I think you are making magnificent progress , and I wish you the very best . I would like to see the information you mention if you do not mind . It would be useful to compare with the long density data. cheers again Keith At 07:20 PM 2/3/04 +0500, you wrote: Content-Type: text/plain; charset=Windows-1251 X-MIME-Autoconverted: from 8bit to quoted-printable by alanllein.uran.ru id i13EL9co081373 Dear Keith, attached manuscript concerning frost and light rings has been submitted to Paleo3 special issue (PAGES conference in Moscow in 2002). I'm still waiting for final decision. Meantime we prepare next version of extremes reconstruction (on the base of Yamal data only) for the last 2100 years using frost, light, missing and very narrow rings. Unfortunately, I could not find time to prepare even draft version of this paper. I can send to you the picture and list of the "extreme" years for this period, if you are interested. Now analysis is going on, little by little. Most probably, we will prepare for publication data for longer reconstruction (up to 4000 years). As to tree-line reconstruction, we have almost no progress. To get more reliable reconstruction we need more samples from sites northwards of 68°N. In 2002 we have sampled subfossil wood in this area. However, without success (only 30 samples, only 5 of them I was able to date). Now we have in all 30 dated samples from the area to the north of 68°. Attached .pcx files show reconstructions that have been published before in the local publications. Only one correction we can do after 2002 field season, namely that big shift of tree line took place after 2420 BC. Hope I will succeed finally in dating of rest of samples to improve reconstruction. Best regards Rashit Hantemirov Institute of Plant and Animal Ecology 8 Marta St., 202 Ekaterinburg, 620144 Russia Tel: +7(3432)51-40-92 Fax: +7(3432)51-41-61 E-mail: rashit@ecology.uran.ru Monday, February 2, 2004, 7:37:36 PM, you wrote: KB> Rashit KB> that sounds great - at least I am happy you are working on the sub fossil KB> material still. I have done some work comparing the Swedish and Finnish KB> long series after standard RCS detrending and there is good similarity at KB> the century timescale for some considerable periods - but significant KB> differences over some others , even allowing for uncertainty in the KB> series These are only 300 km separated so this is an interesting KB> indication of changes in continentality perhaps. I am also interested in KB> extending the high-frequency density series before 1400 AD , to show KB> earlier volcanoes , even though the spatial coverage is poor. It would be KB> interesting to see your extreme year series - do you have a preprint of KB> your paper? I would really like to get support to continue a wider KB> collaboration , including other northern long series to produce wide scale KB> integrated series . What is the latest state of your tree-line KB> reconstruction , for periods earlier than you showed in the Holocene paper? KB> I am still hoping such support may come again from Europe. KB> very best wishes KB> Keith -- Professor Keith Briffa, Climatic Research Unit University of East Anglia Norwich, NR4 7TJ, U.K. Phone: +44-1603-593909 Fax: +44-1603-507784 [1]http://www.cru.uea.ac.uk/cru/people/briffa[2]/ References 1. http://www.cru.uea.ac.uk/cru/people/briffa/ 2. http://www.cru.uea.ac.uk/cru/people/briffa/