An improved mass budget for the Greenland ice sheet

Enderlin, Ellyn M.; Howat, Ian M; Jeong, Seongsu; Noh, Myoung-Jong; van Angelen, Jan H; van den Broeke, Michiel R

doi:10.1002/2013GL059010

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An improved mass budget for the Greenland ice sheet

Author(s): Ellyn M. Enderlin , Ian M. Howat , Seongsu Jeong , Myoung-Jong Noh , Jan H. van Angelen , Michiel R. van den Broeke

Publication date Created: February 16 2014

Publication date (Print): February 16 2014

Journal: Geophysical Research Letters

Publisher: Wiley-Blackwell

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Acceleration of Jakobshavn Isbræ triggered by warm subsurface ocean waters

David M Holland, Robert H Thomas, Brad de Young … (2008)

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Partitioning recent Greenland mass loss.

Michiel R van den Broeke, Jonathan Bamber, Janneke Ettema … (2009)

Mass budget calculations, validated with satellite gravity observations [from the Gravity Recovery and Climate Experiment (GRACE) satellites], enable us to quantify the individual components of recent Greenland mass loss. The total 2000-2008 mass loss of approximately 1500 gigatons, equivalent to 0.46 millimeters per year of global sea level rise, is equally split between surface processes (runoff and precipitation) and ice dynamics. Without the moderating effects of increased snowfall and refreezing, post-1996 Greenland ice sheet mass losses would have been 100% higher. Since 2006, high summer melt rates have increased Greenland ice sheet mass loss to 273 gigatons per year (0.75 millimeters per year of equivalent sea level rise). The seasonal cycle in surface mass balance fully accounts for detrended GRACE mass variations, confirming insignificant subannual variation in ice sheet discharge.