Mass balance of the Greenland ice sheet from 1958 to 2007

Rignot, E., Box, J. E., Burgess, E. and Hanna, E. (2008) Mass balance of the Greenland ice sheet from 1958 to 2007. Geophysical Research Letters, 35 (20). ISSN 0094-8276

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We combine estimates of the surface mass balance, SMB, of the Greenland ice sheet for years 1958 to 2007 with measurements of the temporal variability in ice discharge, D, to deduce the total ice sheet mass balance. During that time period, we find a robust correlation (R2 = 0.83) between anomalies in SMB and in D, which we use to reconstruct a continuous series of total ice sheet mass balance. We. find that the ice sheet was losing 110 ± 70 Gt/yr in the 1960s, 30 ± 50 Gt/yr or near balance in the 1970s-1980s, and 97 ± 47 Gt/yr in 1996 increasing rapidly to 267 ± 38 Gt/yr in 2007. Multi-year variations in ice discharge, themselves related to variations in SMB, cause 60 ± 20 more variation in total mass balance SMB, and therefore dominate the ice sheet mass budget. Copyright 2008 by the American Geophysical Union.

Keywords:Glacial geology, Glaciers, Greenland ices, Ice discharges, Ice sheets, Mass balances, Mass budgets, Robust correlations, Surface mass balances, Temporal variabilities, Time periods, Total masses, Ice, annual variation, correlation, discharge, ice sheet, mass balance, Arctic, Greenland, Greenland Ice Sheet
Subjects:F Physical Sciences > F800 Physical and Terrestrial Geographical and Environmental Sciences
Divisions:College of Science > School of Geography
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ID Code:26052
Deposited On:10 Feb 2017 20:46

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