Accumulation map for the Greenland Ice Sheet: 1971-1990

Details Accumulation map for the Greenland Ice Sheet: 1971-1990 Accumulation map for the Greenland Ice Sheet: 1971-1990

Aug 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001georl..28.2967b&link_type=abstract

Geophysical Research Letters, Volume 28, Issue 15, p. 2967-2970

Physics

17

Hydrology: Glaciology, Hydrology: Precipitation, Oceanography: Physical: Sea Level Variations

Scientific paper

An updated accumulation map for the Greenland Ice Sheet for the period 1971-1990, based on kriging of accurate point estimates developed during the past decade at over 40 points plus over 200 historical points, shows an average water accumulation of 30 gcm-2yr-1. Average uncertainty (standard deviation) in estimates of point accumulation for the interior part of the ice sheet, where the kriging drift surface is well constrained, is approximately 7 gcm-2yr-1, or 24% of mean accumulation. Because there are multiple cores in most regions, the regional uncertainty in accumulation should be considerably lower than the 7 gcm-2yr-1 average uncertainty at a point. There are still many areas on the ice sheet, including northwest and southern Greenland, where annual accumulation remains poorly constrained.

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