气候变化领域集成服务门户(CCPortal): Shifts in water-level variation of Namco in the central Tibetan Plateau from ICESat and CryoSat-2 altimetry and station observations

CCPortal

DOI	10.1007/s11434-015-0826-8
	Shifts in water-level variation of Namco in the central Tibetan Plateau from ICESat and CryoSat-2 altimetry and station observations
	Song, Chunqiao; Ye, Qinghua; Cheng, Xiao
通讯作者	Ye, QH (通讯作者)
发表日期	2015
ISSN	2095-9273
EISSN	2095-9281
起始页码	1287
结束页码	1297
卷号	60 期号:14
英文摘要	The dynamics of high-altitude inland lakes in the Tibetan Plateau are sensitive indicators of climate change. Due to the remoteness and hard access, satellite altimetry becomes an effective approach to obtaining large-scale and temporally continuous information of lake-level changes. The CryoSat-2 altimetry is expected to solve the current problem that earlier radar altimeters are only practical for monitoring large water bodies, while ICESat laser altimetry is available only for the period 2003-2009. In this study, the comparison of CryoSat-2 altimetry for Namco with in situ water-level data suggests a high correlation coefficient of 0.71 (P < 0.01), with the mean error of -0.12 m and root-mean-square error of 0.18 m. Further, the combination of ICESat and CryoSat-2 altimetry data and in situ lake-level observations reveals a rapid water-level rise of 0.24 +/- 0.04 m/year during 2003-2008 and then a slightly decreasing trend of -0.09 +/- 0.04 m/year during 2009-2013. This study suggests that the CryoSat-2 altimetry has the potential of sustaining the fine observations on Tibetan lakes, following the ICESat mission. Besides, the examination of four key climatic variables (temperature, precipitation, potential evapotranspiration, and relative humidity) during 1990-2013 indicates that the wetting climate over Namco Basin stagnated or even reversed around 2006, which may be tightly related to the slowing lake growth.
关键词	MAPAM YUMCO BASIN SATELLITE ALTIMETRY STORAGE CHANGES CLIMATE-CHANGE LAKE GLACIER CO RESERVOIRS BALANCE UPLIFT
英文关键词	Lake; Satellite altimetry; CryoSat-2; ICESat; Tibetan Plateau; Climate change
语种	英语
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000359558700010
来源期刊	SCIENCE BULLETIN
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/258522
推荐引用方式 GB/T 7714	Song, Chunqiao,Ye, Qinghua,Cheng, Xiao. Shifts in water-level variation of Namco in the central Tibetan Plateau from ICESat and CryoSat-2 altimetry and station observations[J]. 中国科学院青藏高原研究所,2015,60(14).
APA	Song, Chunqiao,Ye, Qinghua,&Cheng, Xiao.(2015).Shifts in water-level variation of Namco in the central Tibetan Plateau from ICESat and CryoSat-2 altimetry and station observations.SCIENCE BULLETIN,60(14).
MLA	Song, Chunqiao,et al."Shifts in water-level variation of Namco in the central Tibetan Plateau from ICESat and CryoSat-2 altimetry and station observations".SCIENCE BULLETIN 60.14(2015).