气候变化领域集成服务门户(CCPortal): A consensus estimate for the ice thickness distribution of all glaciers on Earth

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DOI	10.1038/s41561-019-0300-3
	A consensus estimate for the ice thickness distribution of all glaciers on Earth
	Farinotti D.; Huss M.; Fürst J.J.; Landmann J.; Machguth H.; Maussion F.; Pandit A.
发表日期	2019
ISSN	17520894
卷号	12 期号:3
英文摘要	Knowledge of the ice thickness distribution of the world’s glaciers is a fundamental prerequisite for a range of studies. Projections of future glacier change, estimates of the available freshwater resources or assessments of potential sea-level rise all need glacier ice thickness to be accurately constrained. Previous estimates of global glacier volumes are mostly based on scaling relations between glacier area and volume, and only one study provides global-scale information on the ice thickness distribution of individual glaciers. Here we use an ensemble of up to five models to provide a consensus estimate for the ice thickness distribution of all the about 215,000 glaciers outside the Greenland and Antarctic ice sheets. The models use principles of ice flow dynamics to invert for ice thickness from surface characteristics. We find a total volume of 158 ± 41 × 103 km3, which is equivalent to 0.32 ± 0.08 m of sea-level change when the fraction of ice located below present-day sea level (roughly 15%) is subtracted. Our results indicate that High Mountain Asia hosts about 27% less glacier ice than previously suggested, and imply that the timing by which the region is expected to lose half of its present-day glacier area has to be moved forward by about one decade. © 2019, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
scopus关键词	glacier; ice flow; ice thickness; sea level; sea level change; Arctic; Greenland; Greenland Ice Sheet
来源期刊	Nature Geoscience
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/124705
作者单位	Laboratory of Hydraulics, Hydrology and Glaciology (VAW), ETH Zurich, Zurich, Switzerland; Swiss Federal Institute for Forest, Snow and Landscape Research (WSL), Birmensdorf, Switzerland; Department of Geosciences, University of Fribourg, Fribourg, Switzerland; Institute of Geography, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; Department of Geography, University of Zurich, Zurich, Switzerland; Institute of Atmospheric and Cryospheric Sciences, University of Innsbruck, Innsbruck, Austria; Interdisciplinary Programme in Climate Studies, Indian Institute of Technology Bombay, Mumbai, India; Hydro-Remote Sensing Applications (H-RSA) Group, Department of Civil Engineering, Indian Institute of Technology Bombay, Mumbai, India
推荐引用方式 GB/T 7714	Farinotti D.,Huss M.,Fürst J.J.,et al. A consensus estimate for the ice thickness distribution of all glaciers on Earth[J],2019,12(3).
APA	Farinotti D..,Huss M..,Fürst J.J..,Landmann J..,Machguth H..,...&Pandit A..(2019).A consensus estimate for the ice thickness distribution of all glaciers on Earth.Nature Geoscience,12(3).
MLA	Farinotti D.,et al."A consensus estimate for the ice thickness distribution of all glaciers on Earth".Nature Geoscience 12.3(2019).