date: Mon Mar 15 11:59:31 2004 from: Phil Jones subject: Re: [Fwd: Greenland melting] to: Tom Wigley , Sarah Raper Tom, There was a paper on Greenland temperatures in GRL by Hanna and Cappeln GRL 30, 1132 DOI: doi:10.1029/2002GL015797. It only looked at temperatures since the 1950s. Since then there has been some cooling particularly in the SW part. Not read the paper in CC referred to - will download. Recognize the name Jason Box. I think there is a poor paper with his name on - yes, found it, IJC (2002) Vol 22, 1829-1847. The correlations of -0.84 to -0.93 are ridiculous. Box has these at more realistic levels of about -0.5 to -0.6 (winter) with a marked seasonal cycle. Also a cooling of 2.2C in about 15 years of data at the Summit won't be significant. Not all Greenland has cooled either since the 1940s - mostly in the SW. One big question is whether anyone would know if some ice had melted 6K yrs ago. Can't tell from the Summit cores. Lower elevation cores don't go back that far, so may have. Cheers Phil At 07:25 14/03/2004 -0700, Tom Wigley wrote: Phil, Sarah, Do you believe this about Greenland cooling? I though there had been an increase in ice calving. If so, what causes calving? Is it SSTs, or is it dynamics of ice responding still to the early 20th century warming in Greenland? Tom. =========== Prof. Phil Jones Climatic Research Unit Telephone +44 (0) 1603 592090 School of Environmental Sciences Fax +44 (0) 1603 507784 University of East Anglia Norwich Email p.jones@uea.ac.uk NR4 7TJ UK ----------------------------------------------------------------------------