气候变化领域集成服务门户(CCPortal): Annual to seasonal glacier mass balance in High Mountain Asia derived from Pléiades stereo images: examples from the Pamir and the Tibetan Plateau

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DOI	10.5194/tc-17-5435-2023
	Annual to seasonal glacier mass balance in High Mountain Asia derived from Pléiades stereo images: examples from the Pamir and the Tibetan Plateau
	Falaschi, Daniel; Bhattacharya, Atanu; Guillet, Gregoire; Huang, Lei; King, Owen; Mukherjee, Kriti; Rastner, Philipp; Yao, Tandong; Bolch, Tobias
发表日期	2023
ISSN	1994-0416
EISSN	1994-0424
起始页码	5435
结束页码	5458
卷号	17 期号:12
英文摘要	Glaciers are crucial sources of freshwater in particular for the arid lowlands surrounding High Mountain Asia. To better constrain glacio-hydrological models, annual, or even better, seasonal information about glacier mass changes is highly beneficial. In this study, we evaluate the suitability of very-high-resolution Pleiades digital elevation models (DEMs) to measure glacier mass balance at annual and seasonal scales in two regions of High Mountain Asia (Muztagh Ata in Eastern Pamirs and parts of western Nyainqentanglha, south-central Tibetan Plateau), where recent estimates have shown contrasting glacier behaviour. The average annual mass balance in Muztagh Ata between 2019 and 2022 was - 0.07 +/- 0.20 m w.e. a - 1 , suggesting the continuation of a recent phase of slight mass loss following a prolonged period of balanced mass budgets previously observed. The mean annual mass balance in western Nyainqentanglha was highly negative for the same period ( - 0.60 +/- 0.15 m w.e. a - 1 ), suggesting increased mass loss rates compared to the approximately previous 5 decades. The 2022 winter ( + 0.13 +/- 0.24 m w.e.) and summer ( - 0.35 +/- 0.15 m w.e.) mass budgets in Muztagh Ata and western Nyainqentanglha ( - 0.03 +/- 0.27 m w.e. in winter; - 0.63 +/- 0.07 m w.e. in summer) suggest winter- and summer-accumulation-type regimes, respectively. We support our findings by implementing the Sentinel-1-based Glacier Index to identify the firn and wet-snow areas on glaciers and characterize the accumulation type. The good match between the geodetic and Glacier Index results supports the potential of very-high-resolution Pleiades data to monitor mass balance at short timescales and improves our understanding of glacier accumulation regimes across High Mountain Asia.
英文关键词	WESTERN NYAINQENTANGLHA RANGE; DIGITAL ELEVATION MODELS; MUZTAG ATA; ZHADANG GLACIER; GEODETIC GLACIER; LANDSAT IMAGERY; ENERGY-BALANCE; EASTERN PAMIR; VOLUME CHANGE; HEXAGON KH-9
WOS研究方向	Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:001166576700001
来源期刊	CRYOSPHERE
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283917
作者单位	University of St Andrews; Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET); University of Washington; University of Washington Seattle; Chinese Academy of Sciences; Newcastle University - UK; Cranfield University; University of Zurich; Chinese Academy of Sciences; Institute of Tibetan Plateau Research, CAS; Graz University of Technology
推荐引用方式 GB/T 7714	Falaschi, Daniel,Bhattacharya, Atanu,Guillet, Gregoire,et al. Annual to seasonal glacier mass balance in High Mountain Asia derived from Pléiades stereo images: examples from the Pamir and the Tibetan Plateau[J]. 中国科学院青藏高原研究所,2023,17(12).
APA	Falaschi, Daniel.,Bhattacharya, Atanu.,Guillet, Gregoire.,Huang, Lei.,King, Owen.,...&Bolch, Tobias.(2023).Annual to seasonal glacier mass balance in High Mountain Asia derived from Pléiades stereo images: examples from the Pamir and the Tibetan Plateau.CRYOSPHERE,17(12).
MLA	Falaschi, Daniel,et al."Annual to seasonal glacier mass balance in High Mountain Asia derived from Pléiades stereo images: examples from the Pamir and the Tibetan Plateau".CRYOSPHERE 17.12(2023).