DOI: 10.5194/tc-14-1425-2020
论文题名: Brief communication: CESM2 climate forcing (1950-2014) yields realistic Greenland ice sheet surface mass balance
作者: Noël B. ; Van Kampenhout L. ; Jan Van De Berg W. ; Lenaerts J.T.M. ; Wouters B. ; R. Van Den Broeke M.
刊名: Cryosphere
ISSN: 19940416
出版年: 2020
卷: 14, 期: 4 起始页码: 1425
结束页码: 1435
语种: 英语
英文关键词: climate forcing
; climate modeling
; downscaling
; reconstruction
; regional climate
; remote sensing
; runoff
; sea level change
; Arctic
; Greenland
; Greenland Ice Sheet
英文摘要: We present a reconstruction of historical (1950-2014) surface mass balance (SMB) of the Greenland ice sheet (GrIS) using a high-resolution regional climate model (RACMO2; ĝˆ1/411 km ) to dynamically downscale the climate of the Community Earth System Model version 2 (CESM2; ĝˆ1/4111 km ). After further statistical downscaling to 1 km spatial resolution, evaluation using in situ SMB measurements and remotely sensed GrIS mass change shows good agreement. Comparison with an ensemble of previously conducted RACMO2 simulations forced by climate reanalysis demonstrates that the current product realistically represents the long-term average and variability of individual SMB components and captures the recent increase in meltwater runoff that accelerated GrIS mass loss. This means that, for the first time, climate forcing from an Earth system model (CESM2), which assimilates no observations, can be used without additional corrections to reconstruct the historical GrIS SMB and its recent decline that initiated mass loss in the 1990s. This paves the way for attribution studies of future GrIS mass loss projections and contribution to sea level rise. © Author(s) 2020. This work is distributed under the Creative Commons Attribution 4.0 License. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/164547
Appears in Collections: 气候变化与战略
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作者单位: Institute for Marine and Atmospheric Research (IMAU), Utrecht University, Utrecht, Netherlands; Department of Atmospheric and Oceanic Sciences, University of Colorado Boulder, Boulder, CO, United States; Department of Geoscience and Remote Sensing, Delft University of Technology, Delft, Netherlands
Recommended Citation:
Noël B.,Van Kampenhout L.,Jan Van De Berg W.,et al. Brief communication: CESM2 climate forcing (1950-2014) yields realistic Greenland ice sheet surface mass balance[J]. Cryosphere,2020-01-01,14(4)