Journal
SCIENCE
Volume 338, Issue 6111, Pages 1183-1189Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1228102
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Funding
- Phillip Leverhulme Prize award
- European Union [125]
- NASA [NNX09AE47G, NNX08AD64G]
- Netherlands Organization for Scientific Research
- Netherlands Polar Program
- UK Natural Environment Research Council
- NSF
- Lamont Doherty Earth Observatory
- NERC [bas0100027, NE/E007023/1, NE/I010874/1, NE/E004806/1, NE/F014260/1, NE/E014089/1, cpom20001] Funding Source: UKRI
- Natural Environment Research Council [NE/E004806/1, earth010006, cpom20001, bas0100027, NE/F014260/1, NE/E014089/1, NE/I010874/1, NE/E007023/1] Funding Source: researchfish
- NASA [119983, 102979, NNX09AE47G, NNX08AD64G] Funding Source: Federal RePORTER
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We combined an ensemble of satellite altimetry, interferometry, and gravimetry data sets using common geographical regions, time intervals, and models of surface mass balance and glacial isostatic adjustment to estimate the mass balance of Earth's polar ice sheets. We find that there is good agreement between different satellite methods-especially in Greenland and West Antarctica-and that combining satellite data sets leads to greater certainty. Between 1992 and 2011, the ice sheets of Greenland, East Antarctica, West Antarctica, and the Antarctic Peninsula changed in mass by -142 +/- 49, +14 +/- 43, -65 +/- 26, and -20 +/- 14 gigatonnes year(-1), respectively. Since 1992, the polar ice sheets have contributed, on average, 0.59 +/- 0.20 millimeter year(-1) to the rate of global sea-level rise.
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