| DOI: | 10.1002/2013GL059010
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| 论文题名: | An improved mass budget for the Greenland ice sheet |
| 作者: | Enderlin E.M.; Howat I.M.; Jeong S.; Noh M.-J.; Van Angelen J.H.; Van Den Broeke M.R.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-10386
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| EISSN: | 1944-10117
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| 出版年: | 2014
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| 卷: | 41, 期:3 | | 起始页码: | 866
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| 结束页码: | 872
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| 语种: | 英语
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| 英文关键词: | discharge
; glacier change
; Greenland Ice Sheet
; mass budget
; mass change
; surface mass balance
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| Scopus关键词: | Budget control
; Discharge (fluid mechanics)
; Glacial geology
; Glaciers
; NASA
; Sea level
; Glacier change
; Greenland Ice Sheet
; Mass budget
; Mass change
; Surface mass balance
; Ice
; glacial environment
; ice thickness
; mass balance
; measurement method
; runoff
; sea level change
; spatiotemporal analysis
; Arctic
; Greenland
; Greenland Ice Sheet
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| 英文摘要: | Extensive ice thickness surveys by NASA's Operation IceBridge enable over a decade of ice discharge measurements at high precision for the majority of Greenland's marine-terminating outlet glaciers, prompting a reassessment of the temporal and spatial distribution of glacier change. Annual measurements for 178 outlet glaciers reveal that, despite widespread acceleration, only 15 glaciers accounted for 77% of the 739 ± 29 Gt of ice lost due to acceleration since 2000 and four accounted for ∼50%. Among the top sources of loss are several glaciers that have received little scientific attention. The relative contribution of ice discharge to total loss decreased from 58% before 2005 to 32% between 2009 and 2012. As such, 84% of the increase in mass loss after 2009 was due to increased surface runoff. These observations support recent model projections that surface mass balance, rather than ice dynamics, will dominate the ice sheet's contribution to 21st century sea level rise. Key Points Dynamic mass loss is mostly controlled by <10% of fast-flowing outlet glaciers Dynamic acceleration and thinning cause brief, asynchronous discharge increases Changes in surface mass balance not discharge will drive future sea level rise ©2014. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84893659209&doi=10.1002%2f2013GL059010&partnerID=40&md5=6fa80b93946437c4dc94c4314ecd3af6
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/7650
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| Appears in Collections: | 气候减缓与适应
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作者单位: | Byrd Polar Research Center, Ohio State University, Columbus, OH, United States
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| Recommended Citation: | |
Enderlin E.M.,Howat I.M.,Jeong S.,et al. An improved mass budget for the Greenland ice sheet[J]. Geophysical Research Letters,2014-01-01,41(3).
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