气候变化领域集成服务门户(CCPortal): Remapping of Greenland ice sheet surface mass balance anomalies for large ensemble sea-level change projections

CCPortal

DOI	10.5194/tc-14-1747-2020
	Remapping of Greenland ice sheet surface mass balance anomalies for large ensemble sea-level change projections
	Goelzer H.; Noël B.P.Y.; Edwards T.L.; Fettweis X.; Gregory J.M.; Lipscomb W.H.; Van De Wal R.S.W.; Van Den Broeke M.R.
发表日期	2020
ISSN	19940416
起始页码	1747
结束页码	1762
卷号	14 期号:6
英文摘要	Future sea-level change projections with process-based stand-alone ice sheet models are typically driven with surface mass balance (SMB) forcing derived from climate models. In this work we address the problems arising from a mismatch of the modelled ice sheet geometry with the geometry used by the climate model. We present a method for applying SMB forcing from climate models to a wide range of Greenland ice sheet models with varying and temporally evolving geometries. In order to achieve that, we translate a given SMB anomaly field as a function of absolute location to a function of surface elevation for 25 regional drainage basins, which can then be applied to different modelled ice sheet geometries. The key feature of the approach is the non-locality of this remapping process. The method reproduces the original forcing data closely when remapped to the original geometry. When remapped to different modelled geometries it produces a physically meaningful forcing with smooth and continuous SMB anomalies across basin divides. The method considerably reduces non-physical biases that would arise by applying the SMB anomaly derived for the climate model geometry directly to a large range of modelled ice sheet model geometries. © 2020 Authors.
英文关键词	climate forcing; climate modeling; drainage basin; ensemble forecasting; glacier mass balance; mapping method; sea level change; Arctic; Greenland; Greenland Ice Sheet
语种	英语
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/202088
作者单位	Institute for Marine and Atmospheric Research Utrecht, Utrecht University, Utrecht, Netherlands; Laboratoire de Glaciologie, Université Libre de Bruxelles, Brussels, Belgium; Department of Geography, King's College, London, United Kingdom; Laboratory of Climatology, Department of Geography, SPHERES Research Unit, University of Liège, Liège, Belgium; National Centre for Atmospheric Science, University of Reading, Reading, United Kingdom; Met Office, Hadley Centre, Exeter, United Kingdom; Climate and Global Dynamics Laboratory, National Center for Atmospheric Research, Boulder, CO, United States; Geosciences, Physical Geography, Utrecht University, Utrecht, Netherlands
推荐引用方式 GB/T 7714	Goelzer H.,Noël B.P.Y.,Edwards T.L.,et al. Remapping of Greenland ice sheet surface mass balance anomalies for large ensemble sea-level change projections[J],2020,14(6).
APA	Goelzer H..,Noël B.P.Y..,Edwards T.L..,Fettweis X..,Gregory J.M..,...&Van Den Broeke M.R..(2020).Remapping of Greenland ice sheet surface mass balance anomalies for large ensemble sea-level change projections.Cryosphere,14(6).
MLA	Goelzer H.,et al."Remapping of Greenland ice sheet surface mass balance anomalies for large ensemble sea-level change projections".Cryosphere 14.6(2020).