气候变化领域集成服务门户(CCPortal): Contrasting lake changes in Tibet revealed by recent multi-modal satellite observations

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DOI	10.1016/j.scitotenv.2023.168342
	Contrasting lake changes in Tibet revealed by recent multi-modal satellite observations
	Ran, Jiangjun; Liu, Lin; Zhang, Guoqing; Shum, C. K.; Qiu, Jiahui; Hu, Ruigang; Li, Jianping; Peng, Junhuan; Hwang, Cheinway; Luan, Yi; Sun, Yue; Xu, Min; Chen, Dingmei; Ding, Jun; Zhong, Yulong
发表日期	2024
ISSN	0048-9697
EISSN	1879-1026
卷号	908
英文摘要	The limited anthropogenic activities on the Tibetan Plateau make this an ideal natural laboratory to elucidate how climate change impacts lake changes. Previous studies have mainly focused on decadal lake changes, yet their rapid evolutions at short temporal intervals and the associated atmospheric origins remain elusive. Here, we produce a new lake area change dataset at monthly sampling over 2015-2020 from 16,801 satellite images. Our estimates achieve an accuracy of <30 m, as evidenced by in-situ GPS field survey validations of representative lake shorelines. We found contrasting patterns in recent rapid area changes: deaccelerating in the north and accelerating in the south. Such contrasting pattern was unprecedented in the last two decades and is likely caused by recent precipitation anomalies, indicating that lakes in TP may experience a tipping point. Lakes are found to store only a small portion (<5 %) of net precipitation in summer, increased to-11 % for years with heavy precipitation, which helps understand the water mass budget for lakes over there. Our study highlights the importance of investigating short-term lake area changes as a climate proxy to study their rapid responses to intra-and inter-annual climate variability.
关键词	Lake area Summer expansion Deep learning Acceleration Field campaign
英文关键词	WATER; PLATEAU
WOS研究方向	Environmental Sciences
WOS记录号	WOS:001111555300001
来源期刊	SCIENCE OF THE TOTAL 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/283365
作者单位	Southern University of Science & Technology; Chinese University of Hong Kong; Chinese Academy of Sciences; Institute of Tibetan Plateau Research, CAS; University System of Ohio; Ohio State University; Chinese Academy of Sciences; Ocean University of China; Laoshan Laboratory; China University of Geosciences - Beijing; National Yang Ming Chiao Tung University; Chinese Academy of Sciences; China University of Geosciences - Wuhan
推荐引用方式 GB/T 7714	Ran, Jiangjun,Liu, Lin,Zhang, Guoqing,et al. Contrasting lake changes in Tibet revealed by recent multi-modal satellite observations[J]. 中国科学院青藏高原研究所,2024,908.
APA	Ran, Jiangjun.,Liu, Lin.,Zhang, Guoqing.,Shum, C. K..,Qiu, Jiahui.,...&Zhong, Yulong.(2024).Contrasting lake changes in Tibet revealed by recent multi-modal satellite observations.SCIENCE OF THE TOTAL ENVIRONMENT,908.
MLA	Ran, Jiangjun,et al."Contrasting lake changes in Tibet revealed by recent multi-modal satellite observations".SCIENCE OF THE TOTAL ENVIRONMENT 908(2024).