气候变化领域集成服务门户(CCPortal): Constraining grace-derived cryosphere-attributed signal to irregularly shaped ice-covered areas

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DOI	10.5194/tc-7-1901-2013
	Constraining grace-derived cryosphere-attributed signal to irregularly shaped ice-covered areas
	Colgan W.; Luthcke S.; Abdalati W.; Citterio M.
发表日期	2013
ISSN	19940416
卷号	7 期号:6
英文摘要	We use a Monte Carlo approach to invert a spherical harmonic representation of cryosphere-attributed mass change in order to infer the most likely underlying mass changes within irregularly shaped ice-covered areas at nominal 26 km resolution. By inverting a spherical harmonic representation through the incorporation of additional fractional ice coverage information, this approach seeks to eliminate signal leakage between non-ice-covered and ice-covered areas. The spherical harmonic representation suggests a Greenland mass loss of 251 ± 25 Gt a-1 over the December 2003 to December 2010 period. The inversion suggests 218 ± 20 Gt a-1 was due to the ice sheet proper, and 34 ± 5 Gt a-1 (or ∼14%) was due to Greenland peripheral glaciers and ice caps (GrPGICs). This mass loss from GrPGICs exceeds that inferred from all ice masses on both Ellesmere and Devon islands combined. This partition therefore highlights that GRACE-derived "Greenland" mass loss cannot be taken as synonymous with "Greenland ice sheet" mass loss when making comparisons with estimates of ice sheet mass balance derived from techniques that sample only the ice sheet proper. © 2013 Author(s).
学科领域	cryosphere; GRACE; ice cap; ice cover; ice sheet; Monte Carlo analysis; Arctic; Greenland
语种	英语
scopus关键词	cryosphere; GRACE; ice cap; ice cover; ice sheet; Monte Carlo analysis; Arctic; Greenland
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/120224
作者单位	Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, United States; Geological Survey of Denmark and Greenland, Copenhagen, Denmark; Goddard Space Flight Center, National Aeronautics and Space Administration, Greenbelt, MD, United States
推荐引用方式 GB/T 7714	Colgan W.,Luthcke S.,Abdalati W.,et al. Constraining grace-derived cryosphere-attributed signal to irregularly shaped ice-covered areas[J],2013,7(6).
APA	Colgan W.,Luthcke S.,Abdalati W.,&Citterio M..(2013).Constraining grace-derived cryosphere-attributed signal to irregularly shaped ice-covered areas.Cryosphere,7(6).
MLA	Colgan W.,et al."Constraining grace-derived cryosphere-attributed signal to irregularly shaped ice-covered areas".Cryosphere 7.6(2013).