DOI: 10.1038/ngeo2999
论文题名: A spatially resolved estimate of High Mountain Asia glacier mass balances from 2000 to 2016
作者: Brun F. ; Berthier E. ; Wagnon P. ; Kääb A. ; Treichler D.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2017
卷: 10, 期: 9 起始页码: 668
结束页码: 673
语种: 英语
Scopus关键词: calibration
; climate change
; digital elevation model
; estimation method
; glacier mass balance
; mountain region
; satellite imagery
; spatial analysis
; streamflow
; China
; Kunlun Mountains
; Nyainqentanglha Mountains
; Pamirs
; Xizang
英文摘要: High Mountain Asia hosts the largest glacier concentration outside the polar regions. These glaciers are important contributors to streamflow in one of the most populated areas of the world. Past studies have used methods that can provide only regionally averaged glacier mass balances to assess the glacier contribution to rivers and sea level rise. Here we compute the mass balance for about 92% of the glacierized area of High Mountain Asia using time series of digital elevation models derived from satellite stereo-imagery. We calculate a total mass change of -16.3 ± 3.5 Gtyr-1 (-0.18 ± 0.04 m w.e. yr-1) between 2000 and 2016, which is less negative than most previous estimates. Region-wide mass balances vary from -4.0 ± 1.5 Gt yr-1 (-0.62 ± 0.23 m w.e. yr-1) in Nyainqentanglha to +1.4 ± 0.8 Gt yr-1 (+0.14 ± 0.08 m w.e. yr-1) in Kunlun, with large intraregional variability of individual glacier mass balances (standard deviation within a region ∼0.20 m w.e. yr-1). Specifically, our results shed light on the Nyainqentanglha and Pamir glacier mass changes, for which contradictory estimates exist in the literature. They provide crucial information for the calibration of the models used for projecting glacier response to climatic change, as these models do not capture the pattern, magnitude and intra-regional variability of glacier changes at present. © 2017 Macmillan Publishers Limited, part of Springer Nature. All rights reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/105712
Appears in Collections: 气候减缓与适应 科学计划与规划
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作者单位: Univ. Grenoble Alpes, CNRS, IRD, Grenoble INP, IGE, Grenoble, France; LEGOS, Université de Toulouse, CNES, CNRS, IRD, UPS, Toulouse, France; Department of Geosciences, University of Oslo, PO Box 1047, Oslo, Norway
Recommended Citation:
Brun F.,Berthier E.,Wagnon P.,et al. A spatially resolved estimate of High Mountain Asia glacier mass balances from 2000 to 2016[J]. Nature Geoscience,2017-01-01,10(9)