Greenland ice sheet mass balance assessed by PROMICE (1995–2015)

  • William Colgan Department of Glaciology and Climate, Geological Survey of Denmark and Greenland, Copenhagen, Denmark
  • Kenneth D. Mankoff Department of Glaciology and Climate, Geological Survey of Denmark and Greenland, Copenhagen, Denmark
  • Kristian K. Kjeldsen Department of Glaciology and Climate, Geological Survey of Denmark and Greenland, Copenhagen, Denmark; Natural History Museum, University of Copenhagen, Copenhagen, Denmark
  • Anders A. Bjørk Natural History Museum, University of Copenhagen, Copenhagen, Denmark
  • Jason E. Box Department of Glaciology and Climate, Geological Survey of Denmark and Greenland, Copenhagen, Denmark
  • Sebastian B. Simonsen Department of Geodynamics, Technical University of Denmark, Lyngby, Denmark
  • Louise S. Sørensen Department of Geodynamics, Technical University of Denmark, Lyngby, Denmark
  • S. Abbas Khan Department of Geodynamics, Technical University of Denmark, Lyngby, Denmark
  • Anne M. Solgaard Department of Glaciology and Climate, Geological Survey of Denmark and Greenland, Copenhagen, Denmark
  • Rene Forsberg Department of Geodynamics, Technical University of Denmark, Lyngby, Denmark
  • Henriette Skourup Department of Geodynamics, Technical University of Denmark, Lyngby, Denmark
  • Lars Stenseng Department of Geodesy, Technical University of Denmark, Lyngby, Denmark
  • Steen S. Kristensen Department of Microwave and Remote Sensing, Technical University of Denmark, Lyngby, Denmark
  • Sine M. Hvidegaard Department of Geodynamics, Technical University of Denmark, Lyngby, Denmark
  • Michele Citterio Department of Glaciology and Climate, Geological Survey of Denmark and Greenland, Copenhagen, Denmark
  • Nanna Karlsson Department of Glaciology and Climate, Geological Survey of Denmark and Greenland, Copenhagen, Denmark
  • Xavier Fettweis Department of Geography, University of Liège, Liège, Belgium
  • Andreas P. Ahlstrøm Department of Glaciology and Climate, Geological Survey of Denmark and Greenland, Copenhagen, Denmark
  • Signe B. Andersen Department of Glaciology and Climate, Geological Survey of Denmark and Greenland, Copenhagen, Denmark
  • Dirk van As Department of Glaciology and Climate, Geological Survey of Denmark and Greenland, Copenhagen, Denmark
  • Robert S. Fausto Department of Glaciology and Climate, Geological Survey of Denmark and Greenland, Copenhagen, Denmark
Keywords: Climate Change, Greenland, Greenland Ice Sheet, PROMICE, Database

Abstract

The Programme for Monitoring of the Greenland Ice Sheet (PROMICE) has measured ice-sheet elevation and thickness via repeat airborne surveys circumscribing the ice sheet at an average elevation of 1708 ± 5 m (Sørensen et al. 2018). We refer to this 5415 km survey as the ‘PROMICE perimeter’. Here, we assess ice-sheet mass balance following the input-output approach of Andersen et al. (2015). We estimate ice-sheet output, or the ice discharge across the ice-sheet grounding line, by applying downstream corrections to the ice flux across the PROMICE perimeter. We subtract this ice discharge from ice-sheet input, or the area-integrated, ice sheet surface mass balance, estimated by a regional climate model. While Andersen et al. (2015) assessed ice-sheet mass balance in 2007 and 2011, this updated input-output assessment now estimates the annual sea-level rise contribution from eighteen sub-sectors of the Greenland ice sheet over the 1995–2015 period.

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Published
2019-07-08
How to Cite
Colgan, W., Mankoff, K. D., Kjeldsen, K. K., Bjørk, A. A., Box, J. E., Simonsen, S. B., Sørensen, L. S., Khan, S. A., Solgaard, A. M., Forsberg, R., Skourup, H., Stenseng, L., Kristensen, S. S., Hvidegaard, S. M., Citterio, M., Karlsson, N., Fettweis, X., Ahlstrøm, A. P., Andersen, S. B., van As, D., & Fausto, R. S. (2019). Greenland ice sheet mass balance assessed by PROMICE (1995–2015). GEUS Bulletin, 43. https://doi.org/10.34194/GEUSB-201943-02-01
Section
RESEARCH ARTICLE | SHORT