globalchange  > 气候变化与战略
DOI: 10.5194/tc-14-1747-2020
论文题名:
Remapping of Greenland ice sheet surface mass balance anomalies for large ensemble sea-level change projections
作者: 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.
刊名: Cryosphere
ISSN: 19940416
出版年: 2020
卷: 14, 期:6
起始页码: 1747
结束页码: 1762
语种: 英语
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
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.
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被引频次[WOS]:10   [查看WOS记录]     [查看WOS中相关记录]
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/164466
Appears in Collections:气候变化与战略

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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

Recommended Citation:
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]. Cryosphere,2020-01-01,14(6)
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