Long-term records of glacier evolution and associated proglacial lakes on the Tibetan Plateau(1976‒2020)

查看全文 作　　者：Drolma [1,2,3]Lhakpa;Yubao [4,5,6]Qiu;Pa [7]Lhak;Lijuan [5]Shi;Maoce [8]Cheng;Bin [9]Cheng

机构地区：[1]Tibet Institute of Plateau Atmospheric and Environmental Sciences,Tibet Meteorological Bureau,Lhasa,China;[2]Key Laboratory of Atmospheric Environment of Tibet Autonomous Region,Lhasa,Tibet Autonomous Region,China;[3]School of Geography and Ocean Science,Nanjing University,Nanjing,China;[4]International Research Center of Big Data for Sustainable Development Goals,Beijing,China;[5]Aerospace Information Research Institute,Chinese Academy of Sciences,Beijing,China;[6]FMI-AIR Joint Research Center for Arctic Observations,Finnish Meteorological Institute and Aerospace Information Research Institute,Chinese Academy of Sciences,Sodankylä,Finland;[7]Climate Center of Tibet Autonomous Region,Tibet Meteorological Bureau,Lhasa,Tibet Autonomous Region,China;[8]School of Earth Resources,China University of Geosciences,Wuhan,China;[9]Finnish Meteorological Institute,Helsinki,Finland

出　　处：《Big Earth Data》索引2022年第6卷第4期,共18页

基　　金：supported by the National Natural Science Foundation of China(Grant No.42061014);the Second Tibetan Plateau Scientific Expedition and Research Program(STEP)(grant no.2019QZKK0201 and no.2019QZKK0105);the Strategic Priority Research Program of the Chinese Academy of Sciences(no.XDA19070201);the Chinese National Key Research and Development Program(no.2021YFE011004). 摘　　要：The glaciers on the Tibetan Plateau(TP)constitute critical sources of water for the proglacial lakes and many rivers found downstream.To better understand the evolution of glaciers and the impact of this on proglacial lakes,seven glaciers corresponding to continenṅtal,sub-continental,and marine climate types that are influenced by wester-lies and the Indian summer monsoon were selected for study.The evolution of the edges of these glaciers and their associated progla-cial lakes were identified based on the visual interpretation of Landsat TM/ETM+/OLI images.A dataset covering the period 1976-2020 that included the glacier and proglacial lake edge vectors was then created.The relative errors in the areas of the individual glaciers were less than 3%,and for the proglacial lakes these errors were in the range 0%-7%.The dataset was used to effectively compare the changes in glaciers and proglacial lakes that have occurred over the past four decades.The most striking changes that were found were the retreat of glaciers and the formation of small proglacial lakes.This dataset could also be used as a proxy to support research on changes in mountain glaciers,particularly their response to climate change and water resources.This response is of great scientific significance and is important in many applications,including assessments of the ecological problems caused by melting glaciers.The dataset can be downloaded from http://doi.org/10.57760/sciencedb.j00076.00131. 关键词：Glacier and proglacial lake long-term changes LANDSAT Tibetan Plateau

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Long-term records of glacier evolution and associated proglacial lakes on the Tibetan Plateau(1976‒2020)

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