Remote sensing of alpine lake water environment changes on the Tibetan Plateau and surroundings: A review |
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| Affiliation: | 1. MLR Key Laboratory of Saline Lake Resources and Environments, Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China;2. Chinese Academy of Geological Sciences, Beijing 100037, China;1. Department of Geography, University of California, Los Angeles, Portola Plaza, Los Angeles, CA 90095, United States;2. Department of Geography, Kansas State University, Manhattan, KS 66506, United States;3. Department of Land Surveying and Geo-Informatics, The Hong Kong Polytechnic University, 999077, Hong Kong;4. Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, China;1. Synthesis Research Centre of Chinese Ecosystem Research Network, Key Laboratory of Ecosystem Network Observation and Modelling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China;2. State Key Laboratory of Urban and Regional Ecology, Research Center for Eco–environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China;3. Department of Ecology, Evolution, and Natural Resources, School of Environmental and Biological Sciences, Rutgers University, New Brunswick, New Jersey 08901, USA;4. Institute of Mountain Hazard and Environment, Chinese Academy of Sciences, Chengdu, China;5. Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China;6. Department of Biological Sciences, Karakoram International University, Gilgit, Pakistan;7. University of Chinese Academy of Sciences, Beijing 100049, China;8. Chengdu University of Technology, College of Earth Science, Chengdu 610059, China;9. Australian Bureau of Meteorology, Melbourne, GPO Box 1289, VIC 3001, Australia |
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| Abstract: | Alpine lakes on the Tibetan Plateau (TP) are key indicators of climate change and climate variability. The increasing availability of remote sensing techniques with appropriate spatiotemporal resolutions, broad coverage and low costs allows for effective monitoring lake changes on the TP and surroundings and understanding climate change impacts, particularly in remote and inaccessible areas where there are lack of in situ observations. This paper firstly introduces characteristics of Tibetan lakes, and outlines available satellite observation platforms and different remote sensing water-body extraction algorithms. Then, this paper reviews advances in applying remote sensing methods for various lake environment monitoring, including lake surface extent and water level, glacial lake and potential outburst floods, lake ice phenology, geological or geomorphologic evidences of lake basins, with a focus on the trends and magnitudes of lake area and water-level change and their spatially and temporally heterogeneous patterns. Finally we discuss current uncertainties or accuracy of detecting lake area and water-level changes from multi-source satellite data and on-going challenges in mapping characteristics of glacial lakes using remote sensing. Based on previous studies on the relationship between lake variation and climate change, it is inferred that the climate-driven mechanisms of lake variations on the TP still remain unclear and require further research. |
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| Keywords: | Tibetan Plateau Lake Remote sensing Glacial lake Climate change |
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