Forty-six years of Greenland Ice Sheet mass balance from 1972 to 2018
Centre National de la Recherche Scientifique · University of California, Irvine · +6 more institutions
Abstract
We reconstruct the mass balance of the Greenland Ice Sheet using a comprehensive survey of thickness, surface elevation, velocity, and surface mass balance (SMB) of 260 glaciers from 1972 to 2018. We calculate mass discharge, D, into the ocean directly for 107 glaciers (85% of D) and indirectly for 110 glaciers (15%) using velocity-scaled reference fluxes. The decadal mass balance switched from a mass gain of +47 ± 21 Gt/y in 1972-1980 to a loss of 51 ± 17 Gt/y in 1980-1990. The mass loss increased from 41 ± 17 Gt/y in 1990-2000, to 187 ± 17 Gt/y in 2000-2010, to 286 ± 20 Gt/y in 2010-2018, or sixfold since the 1980s, or 80 ± 6 Gt/y per decade, on average. The acceleration in mass loss switched from positive…
Citation impact
- FWCI
- 72.51
- Percentile
- 100%
- References
- 58
Authors
9- JMJ. MouginotCorresponding
Centre National de la Recherche Scientifique, University of California, Irvine, Institut des Géosciences de l'Environnement, Irvine University, Université Grenoble Alpes
- EREric Rignot
Jet Propulsion Laboratory, University of California, Irvine, Irvine University
- AAAnders Anker Bjørk
University of Copenhagen, University of California, Irvine, Irvine University
- MRM. R. van den Broeke
Utrecht University
- RMRomain Millan
University of California, Irvine, Irvine University
Topics & keywords
- Algorithm
- Scroll
- Mathematics
- Artificial intelligence
- Computer science
- Archaeology
- History
- Life below water