DOI: 10.5194/tc-10-459-2016
Scopus记录号: 2-s2.0-84959552064
论文题名: Brief Communication: Upper-air relaxation in RACMO2 significantly improves modelled interannual surface mass balance variability in Antarctica
作者: Van De Berg W ; J ; , Medley B
刊名: Cryosphere
ISSN: 19940416
出版年: 2016
卷: 10, 期: 1 起始页码: 459
结束页码: 463
语种: 英语
英文关键词: annual variation
; climate modeling
; glacier mass balance
; performance assessment
; precipitation (climatology)
; regional climate
; smoothing
; topography
; Antarctic Peninsula
; Antarctica
; West Antarctica
英文摘要: The Regional Atmospheric Climate Model (RACMO2) has been a powerful tool for improving surface mass balance (SMB) estimates from GCMs or reanalyses. However, new yearly SMB observations for West Antarctica show that the modelled interannual variability in SMB is poorly simulated by RACMO2, in contrast to ERA-Interim, which resolves this variability well. In an attempt to remedy RACMO2 performance, we included additional upper-air relaxation (UAR) in RACMO2. With UAR, the correlation to observations is similar for RACMO2 and ERA-Interim. The spatial SMB patterns and ice-sheet-integrated SMB modelled using UAR remain very similar to the estimates of RACMO2 without UAR. We only observe an upstream smoothing of precipitation in regions with very steep topography like the Antarctic Peninsula. We conclude that UAR is a useful improvement for regional climate model simulations, although results in regions with steep topography should be treated with care. © 2016 Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75180
Appears in Collections: 影响、适应和脆弱性 气候变化与战略
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作者单位: IMAU, Utrecht University, Utrecht, Netherlands; NASA-GSFC, Greenbelt, MD, United States
Recommended Citation:
Van De Berg W,J,, Medley B. Brief Communication: Upper-air relaxation in RACMO2 significantly improves modelled interannual surface mass balance variability in Antarctica[J]. Cryosphere,2016-01-01,10(1)