气候变化领域集成服务门户(CCPortal): Combined ICESat and CryoSat-2 Altimetry for Accessing Water Level Dynamics of Tibetan Lakes over 2003-2014

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DOI	10.3390/w7094685
	Combined ICESat and CryoSat-2 Altimetry for Accessing Water Level Dynamics of Tibetan Lakes over 2003-2014
	Song, Chunqiao; Ye, Qinghua; Sheng, Yongwei; Gong, Tongliang
通讯作者	Song, CQ (通讯作者)
发表日期	2015
EISSN	2073-4441
起始页码	4685
结束页码	4700
卷号	7 期号:9
英文摘要	Long-term observations of lake water level are essential to our understanding of the evolution of Tibetan lake system. CryoSat-2 radar altimetry data over the Tibetan Plateau (2010-2014, P-2) is used to extend lake level measurements from ICESat laser altimetry (2003-2009, P-1). This study evaluates the performance of CryoSat-2 data by comparing with gauge-based water levels that are calibrated by ICESat-observed water level time series, and quantifies the uncertainty of water-level change rate estimates from satellite altimetry measurements. We completely investigate the 131 lakes that were observed by both ICESat and CryoSat-2. The mean change rate of water level for all of examined lakes in P-2 (0.19 +/- 0.03m.year(-1)) is slightly lower than that (0.21 +/- 0.02 m.year(-1)) observed in P-1. The extended lake level time series also indicates that, in the past few years, lakes in the Northern Changtang (especially in Hol Xil) showed accelerated growth; and that the extensive lake level rises north to the Gangdise Mountains, during 2003-2009, were found dampened during the CryoSat-2 observation period. The spatio-temporal heterogeneity of precipitation observed from weather stations can be used to partly explain the observed temporal pattern of lake level changes over different sub-zones of the plateau.
关键词	QUALITY ASSESSMENT NAM CO PLATEAU CLIMATE GLACIERS CHINA BASIN
英文关键词	lake; CryoSat-2; ICESat; water balance; Tibetan Plateau; climate change
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
WOS类目	Environmental Sciences ; Water Resources
WOS记录号	WOS:000362562200006
来源期刊	WATER
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/258508
推荐引用方式 GB/T 7714	Song, Chunqiao,Ye, Qinghua,Sheng, Yongwei,et al. Combined ICESat and CryoSat-2 Altimetry for Accessing Water Level Dynamics of Tibetan Lakes over 2003-2014[J]. 中国科学院青藏高原研究所,2015,7(9).
APA	Song, Chunqiao,Ye, Qinghua,Sheng, Yongwei,&Gong, Tongliang.(2015).Combined ICESat and CryoSat-2 Altimetry for Accessing Water Level Dynamics of Tibetan Lakes over 2003-2014.WATER,7(9).
MLA	Song, Chunqiao,et al."Combined ICESat and CryoSat-2 Altimetry for Accessing Water Level Dynamics of Tibetan Lakes over 2003-2014".WATER 7.9(2015).