A doubled increasing trend of evapotranspiration on the Tibetan Plateau

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外文摘要：Estimation of evapotranspiration(ETa)change on the Tibetan Plateau(TP)is essential to address the water requirement of billions of people surrounding the TP.Existing studies have shown that ETa estimations on the TP have a very large uncertainty.In this article,we discuss how to more accurately quantify ETa amount and explain its change on the TP.ETa change on the TP can be quantified and explained based on an ensem-ble mean product from climate model simulations,reanalysis,as well as ground-based and satellite obser-vations.ETa on the TP experienced a significant increasing trend of around 8.4±2.2 mm(10 a)-1(mean±one standard deviation)during 1982-2018,approximately twice the rate of the global land ETa(4.3±2.1 mm(10 a)-1).Numerical attribution analysis revealed that a 53.8％TP area with the increased ETa was caused by increased temperature and 23.1％part was due to soil moisture rising,because of the warming,melting cryosphere,and increased precipitation.The projected future increase in ETa is expected to cause a continued acceleration of the water cycle until 2100.

外文关键词：

EvapotranspirationGlobal warmingWater cycleTibetan Plateau

作者：

Xuelong Chen、Ling Yuan、Yaoming Ma、Deliang Chen、Zhongbo Su、Dianbin Cao

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作者单位：

Land-Atmosphere Interaction and Its Climatic Effects Group,State Key Laboratory of Tibetan Plateau Earth System,Environment and Resources(TPESER),Institute of Tibetan Plateau Research,Chinese Academy of Sciences,Beijing 100101,China

University of Chinese Academy of Sciences,Beijing 100049,China

College of Atmospheric Science,Lanzhou University,Lanzhou 730000,China

National Observation and Research Station for Qomolongma Special Atmospheric Processes and Environmental Changes,Dingri 858200,China

Kathmandu Ce

Regional Climate Group,Department of Earth Science,University of Gothenburg,Gothenburg 405 30,Sweden

Faculty of Geo-Information Science and Earth Observation,University of Twente,Enschede 7500AE,the Netherlands

School of Environmental Science and Engineering,Chang'an University,Xi'an 710064,China

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基金：

Second Tibetan Plateau Scientific Expedition and Research(STEP)ProgramSecond Tibetan Plateau Scientific Expedition and Research(STEP)ProgramNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaSwedish Research Council VRSwedish Research Council VR

项目编号：

2019QZKK01032019QZKK010541975009422306102021-021632022-06011

出版年：

2024

DOI：

10.1016/j.scib.2024.03.046

科学通报(英文版)

中国科学院

科学通报(英文版)

CSTPCD

ISSN：1001-6538

年,卷(期)：2024.69(12)