气候变化领域集成服务门户(CCPortal): Lake water and glacier mass gains in the northwestern Tibetan Plateau observed from multi-sensor remote sensing data: Implication of an enhanced hydrological cycle

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DOI	10.1016/j.rse.2019.111554
	Lake water and glacier mass gains in the northwestern Tibetan Plateau observed from multi-sensor remote sensing data: Implication of an enhanced hydrological cycle
	Zhang, Guoqing; Chen, Wenfeng; Li, Gang; Yang, Wei; Yi, Shuang; Luo, Wei
通讯作者	Zhang, GQ (通讯作者)
发表日期	2020
ISSN	0034-4257
EISSN	1879-0704
卷号	237
英文摘要	Lakes and glaciers are widely distributed in the northwestern Tibetan Plateau. A synchronized examination of lake and glacier mass variations there has not previously been conducted, which has limited the understanding of the lake water balance and the hydrologic cycle in the region. In this study, we comprehensively examine lake area and volume, and glacier mass changes using multi-sensor satellite data. We find that lake expansion in the northwestern Tibetan Plateau was more robust from 1976 to 2018 when compared to other regions of the plateau, especially for the glacier-fed and endorheic lakes. Lake volume changes show that most of the lakes had an increase in water volume, particularly in 20002018 with a total water storage gain of similar to 28.6 Gt. By using high-resolution KH-9 and TanDEM-X data, we observe that the glacier surface elevation of the western Kunlun Mountains had a slight thinning rate of -0.07 +/- 0.16 m/yr in 1973-2000, but a positive rate of 0.002 +/- 0.003 m/yr in 2000-2018. The heterogeneous pattern of glacier elevation changes between the north (N) and south (S) slopes are revealed, i.e. -0.02 +/- 0.01 m/yr (N) against -0.12 +/- 0.03 m/yr (S) in 1973-2000 and - 0.05 +/- 0.02 m/yr (N) against 0.06 +/- 0.02 m/yr (S) in 2000-2018. Overall, the glaciers trend to a stable state (similar to 0.05 m/yr) in both the south slope of the western Kunlun Mountains and Aru Co regions between 2000 and 2018. Similar patterns are also found for basin-wide examinations of lake storage changes (mass gains) and glacier mass budgets (positive or close to stable). The seasonal snow cover area changes, derived from cloud-free MODIS snow cover products, present a variable and insignificant trend between 2003 and 2017. Snow depth derived from passive microwave remote-sensing data, exhibits a decreasing trend between 1979 and 2015, but the water equivalent could contribute only an insignificant amount to the observed lake changes. The lake water gains, and almost positive glacier mass balance imply that the hydrological cycle in the northwestern Tibetan Plateau has become enhanced.
关键词	SNOW-DEPTH ELEVATION CHANGES STORAGE CHANGES CLIMATE-CHANGE WESTERN TIBET SURFACE-WATER PRECIPITATION RESOLUTION DYNAMICS VOLUME
英文关键词	Lake change; Glacier change; Multi-sensor remote sensing; Northwestern Tibetan plateau; Hydrological cycle
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Remote Sensing ; Imaging Science & Photographic Technology
WOS类目	Environmental Sciences ; Remote Sensing ; Imaging Science & Photographic Technology
WOS记录号	WOS:000509819300029
来源期刊	REMOTE SENSING OF ENVIRONMENT
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/259945
推荐引用方式 GB/T 7714	Zhang, Guoqing,Chen, Wenfeng,Li, Gang,et al. Lake water and glacier mass gains in the northwestern Tibetan Plateau observed from multi-sensor remote sensing data: Implication of an enhanced hydrological cycle[J]. 中国科学院青藏高原研究所,2020,237.
APA	Zhang, Guoqing,Chen, Wenfeng,Li, Gang,Yang, Wei,Yi, Shuang,&Luo, Wei.(2020).Lake water and glacier mass gains in the northwestern Tibetan Plateau observed from multi-sensor remote sensing data: Implication of an enhanced hydrological cycle.REMOTE SENSING OF ENVIRONMENT,237.
MLA	Zhang, Guoqing,et al."Lake water and glacier mass gains in the northwestern Tibetan Plateau observed from multi-sensor remote sensing data: Implication of an enhanced hydrological cycle".REMOTE SENSING OF ENVIRONMENT 237(2020).