气候变化领域集成服务门户(CCPortal): Two decades of glacier mass loss along the Andes

CCPortal

DOI	10.1038/s41561-019-0432-5
	Two decades of glacier mass loss along the Andes
	Dussaillant I.; Berthier E.; Brun F.; Masiokas M.; Hugonnet R.; Favier V.; Rabatel A.; Pitte P.; Ruiz L.
发表日期	2019
ISSN	17520894
卷号	12 期号:10
英文摘要	Andean glaciers are among the fastest shrinking and largest contributors to sea level rise on Earth. They also represent crucial water resources in many tropical and semi-arid mountain catchments. Yet the magnitude of the recent ice loss is still debated. Here we present Andean glacier mass changes (from 10° N to 56° S) between 2000 and 2018 using time series of digital elevation models derived from ASTER stereo images. The total mass change over this period was −22.9 ± 5.9 Gt yr−1 (−0.72 ± 0.22 m w.e. yr−1 (m w.e., metres of water equivalent)), with the most negative mass balances in the Patagonian Andes (−0.78 ± 0.25 m w.e. yr−1) and the Tropical Andes (−0.42 ± 0.24 m w.e. yr−1), compared to relatively moderate losses (−0.28 ± 0.18 m w.e. yr−1) in the Dry Andes. Subperiod analysis (2000–2009 versus 2009–2018) revealed a steady mass loss in the tropics and south of 45° S. Conversely, a shift from a slightly positive to a strongly negative mass balance was measured between 26 and 45° S. In the latter region, the drastic glacier loss in recent years coincides with the extremely dry conditions since 2010 and partially helped to mitigate the negative hydrological impacts of this severe and sustained drought. These results provide a comprehensive, high-resolution and multidecadal data set of recent Andes-wide glacier mass changes that constitutes a relevant basis for the calibration and validation of hydrological and glaciological models intended to project future glacier changes and their hydrological impacts. © 2019, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
scopus关键词	ASTER; data set; digital elevation model; glacier mass balance; magnitude; mountain environment; stereo image; time series analysis
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/124591
作者单位	LEGOS, Université de Toulouse, CNES, CNRS, IRD, UPS, Toulouse, France; Université Grenoble Alpes, CNRS, IRD, Grenoble INP, IGE, Grenoble, France; IANIGLA, CCT-CONICET, Mendoza, Argentina
推荐引用方式 GB/T 7714	Dussaillant I.,Berthier E.,Brun F.,et al. Two decades of glacier mass loss along the Andes[J],2019,12(10).
APA	Dussaillant I..,Berthier E..,Brun F..,Masiokas M..,Hugonnet R..,...&Ruiz L..(2019).Two decades of glacier mass loss along the Andes.Nature Geoscience,12(10).
MLA	Dussaillant I.,et al."Two decades of glacier mass loss along the Andes".Nature Geoscience 12.10(2019).