globalchange  > 科学计划与规划
DOI: 10.1002/2016GL069666
论文题名:
A high-resolution record of Greenland mass balance
作者: McMillan M.; Leeson A.; Shepherd A.; Briggs K.; Armitage T.W.K.; Hogg A.; Kuipers Munneke P.; van den Broeke M.; Noël B.; van de Berg W.J.; Ligtenberg S.; Horwath M.; Groh A.; Muir A.; Gilbert L.
刊名: Geophysical Research Letters
ISSN: 0094-8947
EISSN: 1944-8678
出版年: 2016
卷: 43, 期:13
起始页码: 7002
结束页码: 7010
语种: 英语
英文关键词: altimetry ; CryoSat-2 ; GRACE ; Greenland Ice Sheet ; mass balance
Scopus关键词: Geodetic satellites ; Glaciers ; altimetry ; Cryosat ; GRACE ; Greenland Ice Sheet ; Mass balance ; Ice
英文摘要: We map recent Greenland Ice Sheet elevation change at high spatial (5 km) and temporal (monthly) resolution using CryoSat-2 altimetry. After correcting for the impact of changing snowpack properties associated with unprecedented surface melting in 2012, we find good agreement (3 cm/yr bias) with airborne measurements. With the aid of regional climate and firn modeling, we compute high spatial and temporal resolution records of Greenland mass evolution, which correlate (R = 0.96) with monthly satellite gravimetry and reveal glacier dynamic imbalance. During 2011–2014, Greenland mass loss averaged 269 ± 51 Gt/yr. Atmospherically driven losses were widespread, with surface melt variability driving large fluctuations in the annual mass deficit. Terminus regions of five dynamically thinning glaciers, which constitute less than 1% of Greenland's area, contributed more than 12% of the net ice loss. This high-resolution record demonstrates that mass deficits extending over small spatial and temporal scales have made a relatively large contribution to recent ice sheet imbalance. ©2016. The Authors.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84979950305&doi=10.1002%2f2016GL069666&partnerID=40&md5=9c9644c4368fba2412ba66d99e8b7b12
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9910
Appears in Collections:科学计划与规划
气候变化与战略

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作者单位: Centre for Polar Observation and Modelling, University of Leeds, Leeds, United Kingdom

Recommended Citation:
McMillan M.,Leeson A.,Shepherd A.,et al. A high-resolution record of Greenland mass balance[J]. Geophysical Research Letters,2016-01-01,43(13).
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