In:
Science, American Association for the Advancement of Science (AAAS), Vol. 338, No. 6111 ( 2012-11-30), p. 1183-1189
Abstract:
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.
Type of Medium:
Online Resource
ISSN:
0036-8075
,
1095-9203
DOI:
10.1126/science.1228102
Language:
English
Publisher:
American Association for the Advancement of Science (AAAS)
Publication Date:
2012
detail.hit.zdb_id:
128410-1
detail.hit.zdb_id:
2066996-3
detail.hit.zdb_id:
2060783-0
SSG:
11
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