DOI: 10.1002/grl.50490
论文题名: Rapid loss of firn pore space accelerates 21st century Greenland mass loss
作者: Van Angelen J.H. ; Lenaerts J.T.M. ; Van Den Broeke M.R. ; Fettweis X. ; Van Meijgaard E.
刊名: Geophysical Research Letters
ISSN: 0094-9045
EISSN: 1944-8776
出版年: 2013
卷: 40, 期: 10 起始页码: 2109
结束页码: 2113
语种: 英语
英文关键词: 21st century scenario
; Greenland SMB
; refreezing capacity
Scopus关键词: 21st century scenario
; Global sea level rise
; Greenland
; Greenland Ice Sheet
; High resolution
; Refreezing
; Surface mass balance
; Surface process
; Glaciers
; Sea level
; Glacial geology
; acceleration
; freezing
; ice sheet
; mass balance
; meltwater
; resolution
; sea level change
; twenty first century
; Arctic
; Greenland
英文摘要: Mass loss from the two major ice sheets and their contribution to global sea level rise is accelerating. In Antarctica, mass loss is dominated by increased flow velocities of outlet glaciers, following the thinning or disintegration of coastal ice shelves into which they flow. In contrast, ∼55% of post-1992 Greenland ice sheet (GrIS) mass loss is accounted for by surface processes, notably increased meltwater runoff. A subtle process in the surface mass balance of the GrIS is the retention and refreezing of meltwater, currently preventing ∼40% of the meltwater to reach the ocean. Here we force a high-resolution atmosphere/snow model with a mid-range warming scenario (RCP4.5, 1970-2100), to show that rapid loss of firn pore space, by >50% at the end of the 21st century, quickly reduces this refreezing buffer. As a result, GrIS surface mass loss accelerates throughout the 21st century and its contribution to global sea level rise increases to 1.7 ±0.5 mm yr -1, more than four times the current value. © 2013 American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84879900646&doi=10.1002%2fgrl.50490&partnerID=40&md5=929e3ecb35d8a9d70bdf004178de79aa
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6309
Appears in Collections: 气候减缓与适应
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作者单位: Institute for Marine and Atmospheric Research Utrecht, Utrecht University, Netherlands
Recommended Citation:
Van Angelen J.H.,Lenaerts J.T.M.,Van Den Broeke M.R.,et al. Rapid loss of firn pore space accelerates 21st century Greenland mass loss[J]. Geophysical Research Letters,2013-01-01,40(10).