date: Wed Jan  5 15:27:09 2005
from: Keith Briffa <k.briffa@uea.ac.uk>
subject: Re: IPCC
to: Valerie.Masson@cea.fr

   Valerie
   I am considering what to do as regards regional input , and how to frame in the context of
   MWP /LIA discussion. If we do use these numbers you send - we would rather use the 2000
   years - also is there a formal calibration that would provide some indication of
   uncertainty if interpreted as regional temperatures?
   thanks
   Keith
   At 14:56 05/01/2005, you wrote:

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     Hi Keith
     Here are a few lines and references for the poles, together with a data file with
     temperatures or temperature indices for both poles. Hope that you will find it useful
     for IPCC.
     Also, what are your plans for IMPRINT WP1 budget and others?
     Valerie.
     Keith Briffa wrote:

     This is my fault
     I realise I did not say specifically what I wanted - in fact I would like a detailed
     section on forcings (and a detailed Figure) and in the regional discussions , sections
     on the Arctic, Northern Extra tropics , Tropics, southern extra tropics and Antartic.
     Can you provide a few sentences for any and data to draw plots?
     Keith
     At 16:36 17/12/2004, you wrote:

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     Dear Keith,
     I thought I was not expected to contribute so much for the last millenia.
     For Antarctica :
     I suggest to refer to the paper by Goosse et al GRL 2004 attached (2003GL...pdf) and the
     paper by Bradley Science 2003 about latitudinal patterns associated to the warmth during
     the medieval period and the apparent phase lag between Antarctica and the northern
     hemisphere.
     For Greenland :
     Hoffmann et al JGR 2001 use deuterium excess in central Greenland to suggest a
     significant cooling of the north Atlantic during the Little Ice Age.
     For Europe :
     Using tree ring cellulose isotopes a reconstruction of drought frequencies in Brittany
     has been achieved (published online, Climate Dynamics, pre print attached) for the last
     400 years. It suggests that droughts are large as 1976 were twice more frequent during
     the warm decades than the cold decades (mean temperature difference of the two groups of
     0.8 deg C).
     I suggest also to include references to works that place summer 2003 heat wave in Europe
     in a broader perspective including Luterbacher et al 2004 and Chuine et al 2004 (from
     grape harvest dates and phenology model).
     I hope that it does help... Got almost no contribution for the Holocene section either.
     Hope you may have suggestions.
     Best wishes and see you next year
     Valrie.

     --
     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/

   --
   Professor Keith Briffa,
   Climatic Research Unit
   University of East Anglia
   Norwich, NR4 7TJ, U.K.

   Phone: +44-1603-593909
   Fax: +44-1603-507784
   [2]http://www.cru.uea.ac.uk/cru/people/briffa/

