date: Wed Jan 5 15:27:09 2005 from: Keith Briffa 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: Content-Type: text/plain; charset=ISO-8859-1; format=flowed X-MIME-Autoconverted: from 8bit to quoted-printable by sainfoin.extra.cea.fr id j05EuO1U025685 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: Content-Type: text/plain; charset=ISO-8859-1; format=flowed X-MIME-Autoconverted: from 8bit to quoted-printable by sainfoin.extra.cea.fr id iBHGZwwE025241 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 Valérie. -- 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/