Contrasting lake changes in Tibet revealed by recent multi-modal satellite observations

Ran，Jiangjun1; Liu，Lin2; Zhang，Guoqing3; Shum，C. K.4,5; Qiu，Jiahui1; Hu，Ruigang1; Li，Jianping6,7; Peng，Junhuan8; Hwang，Cheinway9; Luan，Yi1; Sun，Yue6,7; Xu，Min10; Chen，Dingmei11; Ding，Jun1; Zhong，Yulong12

2024-01-15

10.1016/j.scitotenv.2023.168342

Science of the Total Environment   影响因子和分区

0048-9697

1879-1026

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.

Acceleration Deep learning Field campaign Lake area Summer expansion

SCI ; EI

英语

第一

ENVIRONMENT/ECOLOGY

2-s2.0-85176120938

Scopus

1.Department of Earth and Space Sciences,Southern University of Science and Technology,Shenzhen,China
2.Earth System Science Programme,Faculty of Science,The Chinese University of Hong Kong,Hong Kong
3.State Key Laboratory of Tibetan Plateau Earth System Science,Environment and Resources (TPESER),Institute of Tibetan Plateau Research,Chinese Academy of Sciences,Beijing,China
4.Division of Geodetic Science,School of Earth Sciences,Ohio State University,Columbus,United States
5.State Key Laboratory of Geodesy and Earth's Dynamics,Innovation Academy for Precision Measurement Science and Technology,Chinese Academy of Sciences,Wuhan,China
6.Frontiers Science Center for Deep Ocean Multispheres and Earth System (FDOMES),Key Laboratory of Physical Oceanography,Academy of the Future Ocean,College of Oceanic and Atmospheric Science,Ocean University of China,Qingdao,China
7.Laboratory for Ocean Dynamics and Climate,Pilot Qingdao National Laboratory for Marine Science and Technology,Qingdao,China
8.School of Land Science and Technology,China University of Geosciences,Beijing,China
9.Department of Civil Engineering,National Yang Ming Chiao Tung University,Hsinchu,Taiwan
10.State Key Laboratory of Cryospheric Science,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou,China
11.Shannan Meteorological Service of Tibet,Shannan,China
12.School of Geography and Information Engineering,China University of Geosciences (Wuhan),Wuhan,China

Ran，Jiangjun,Liu，Lin,Zhang，Guoqing,et al. Contrasting lake changes in Tibet revealed by recent multi-modal satellite observations[J]. Science of the Total Environment,2024,908.

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.

Ran，Jiangjun,et al."Contrasting lake changes in Tibet revealed by recent multi-modal satellite observations".Science of the Total Environment 908(2024).