Monday, December 12, 2011


From: Keith Briffa <>
To: Rashit Hantemirov <>
Subject: Re[2]: Stephen McIntyre
Date: Mon Feb 2 14:37:36 2004

that sounds great - at least I am happy you are working on the sub fossil material still. I
have done some work comparing the Swedish and Finnish long series after standard RCS
detrending and there is good similarity at the century timescale for some considerable
periods - but significant differences over some others , even allowing for uncertainty in
the series These are only 300 km separated so this is an interesting indication of changes
in continentality perhaps. I am also interested in extending the high-frequency density
series before 1400 AD , to show earlier volcanoes , even though the spatial coverage is
poor. It would be interesting to see your extreme year series - do you have a preprint of
your paper? I would really like to get support to continue a wider collaboration ,
including other northern long series to produce wide scale integrated series . What is the
latest state of your tree-line reconstruction , for periods earlier than you showed in the
Holocene paper? I am still hoping such support may come again from Europe.
very best wishes
At 07:28 PM 2/2/04 +0500, you wrote:

Dear Keith,
it is very nice to hear from you.
We live and work in the old way. Stepan has been updated his woody
vegetation descriptions in the Polar Urals to reconstruct dynamics of
forest structure near upper timberline for the last century.
Because of some reasons (sometimes without any reasons) the work on
constructing Yamal chronology is going not very well. Duration of
chronology is now 7315 years (7314 BC - AD 2000). The last valuable
field work has been realized in 2000, when we have collected 370
subfossil samples. Half of them have been dated. Now I successfully
collect money for field work (for helicopter rent). I hope this field
season will be fruitful. Meantime we have analyzed frost- and
light-ring frequency in Yamal tree rings for the last 2100 years to
reconstruct extreme events. The later half of this reconstruction, I
hope, will be published this year in Palaeo3. Now I contracted
(together with Stepan) to write by June something like textbook on
tree-ring dating for archeologists (in Russian). Then I'm going to
return to work on Yamal chronology. It would be pleasure to keep on
our joint work.
Best regards
Rashit Hantemirov
Institute of Plant and Animal Ecology
8 Marta St., 202
Ekaterinburg, 620144
Tel: +7(3432)51-40-92
Fax: +7(3432)51-41-61
Monday, February 2, 2004, 1:57:37 PM, you wrote:
KB> Dear Rashit
KB> thanks for this - these people ask many questions as they try constantly to
KB> attack the global warming proponents . I answer sometimes , but it usually
KB> means they come back with many more questions. All part of science I suppose.
KB> How are you , and Stepan? I have a student working on trying to refine the
KB> RCS approach , to allow less trees and reduce bias that comes from using
KB> only recent data . Hope to get him to test new methods on your and
KB> Vaganov's data if that is OK with you . I wish to work towards a new
KB> EuroSiberian series for several millennia at least. Are you still adding
KB> new data? How are you all?
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



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