DOI: 10.1002/2016GL068784
论文题名: Modeling of ocean-induced ice melt rates of five west Greenland glaciers over the past two decades
作者: Rignot E. ; Xu Y. ; Menemenlis D. ; Mouginot J. ; Scheuchl B. ; Li X. ; Morlighem M. ; Seroussi H. ; van den Broeke M. ; Fenty I. ; Cai C. ; An L. ; de Fleurian B.
刊名: Geophysical Research Letters
ISSN: 0094-9720
EISSN: 1944-9451
出版年: 2016
卷: 43, 期: 12 起始页码: 6374
结束页码: 6382
语种: 英语
英文关键词: calving
; glaciology
; greenland
; ice-ocean interaction
; mass balance
; subaqueous melt
Scopus关键词: Glaciers
; Oceanography
; Runoff
; Calving
; Glaciology
; Greenland
; Ice-ocean interactions
; Mass balance
; Ice
; bathymetry
; general circulation model
; glacier mass balance
; glaciology
; ice retreat
; ice sheet
; ice-ocean interaction
; iceberg calving
; reconstruction
; runoff
; snowmelt
; three-dimensional modeling
; Arctic
; Greenland
; Massachusetts
; Rink Glacier
; United States
; West Greenland
英文摘要: High-resolution, three-dimensional simulations from the Massachusetts Institute of Technology general circulation model ocean model are used to calculate the subaqueous melt rate of the calving faces of Umiamako, Rinks, Kangerdlugssup, Store, and Kangilerngata glaciers, west Greenland, from 1992 to 2015. Model forcing is from monthly reconstructions of ocean state and ice sheet runoff. Results are analyzed in combination with observations of bathymetry, bed elevation, ice front retreat, and glacier speed. We calculate that subaqueous melt rates are 2–3 times larger in summer compared to winter and doubled in magnitude since the 1990s due to enhanced subglacial runoff and 1.6 ± 0.3°C warmer ocean temperature. Umiamako and Kangilerngata retreated rapidly in the 2000s when subaqueous melt rates exceeded the calving rates and ice front retreated to deeper bed elevation. In contrast, Store, Kangerdlugssup, and Rinks have remained stable because their subaqueous melt rates are 3–4 times lower than their calving rates, i.e., the glaciers are dominated by calving processes. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84977537443&doi=10.1002%2f2016GL068784&partnerID=40&md5=4827a2665fc14c2372e1891ea4f0cb2c
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10683
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: Department of Earth System Science, University of California, Irvine, CA, United States
Recommended Citation:
Rignot E.,Xu Y.,Menemenlis D.,et al. Modeling of ocean-induced ice melt rates of five west Greenland glaciers over the past two decades[J]. Geophysical Research Letters,2016-01-01,43(12).