气候变化领域集成服务门户(CCPortal): Brief Communication: Upper-air relaxation in RACMO2 significantly improves modelled interannual surface mass balance variability in Antarctica

CCPortal

DOI	10.5194/tc-10-459-2016
	Brief Communication: Upper-air relaxation in RACMO2 significantly improves modelled interannual surface mass balance variability in Antarctica
	Van De Berg W.J.; Medley B.
发表日期	2016
ISSN	19940416
卷号	10 期号:1
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).
学科领域	annual variation; climate modeling; glacier mass balance; performance assessment; precipitation (climatology); regional climate; smoothing; topography; Antarctic Peninsula; Antarctica; West Antarctica
语种	英语
scopus关键词	annual variation; climate modeling; glacier mass balance; performance assessment; precipitation (climatology); regional climate; smoothing; topography; Antarctic Peninsula; Antarctica; West Antarctica
来源期刊	Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/119696
作者单位	IMAU, Utrecht University, Utrecht, Netherlands; NASA-GSFC, Greenbelt, MD, United States
推荐引用方式 GB/T 7714	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],2016,10(1).
APA	Van De Berg W.J.,&Medley B..(2016).Brief Communication: Upper-air relaxation in RACMO2 significantly improves modelled interannual surface mass balance variability in Antarctica.Cryosphere,10(1).
MLA	Van De Berg W.J.,et al."Brief Communication: Upper-air relaxation in RACMO2 significantly improves modelled interannual surface mass balance variability in Antarctica".Cryosphere 10.1(2016).