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DOI	10.1007/s10584-019-02623-2
	MODIS-observed variations of lake ice phenology in Xinjiang; China
	Cai Y.; Ke C.-Q.; Yao G.; Shen X.
发表日期	2020
ISSN	0165-0009
起始页码	575
结束页码	592
卷号	158 期号:2020-03-04
英文摘要	Lakes sensitively respond to global and regional climate change, especially in arid areas. Using Moderate Resolution Imaging Spectroradiometer (MODIS) daily snow products, the lake ice phenology of 23 lakes in the Xinjiang Uygur Autonomous Region of China from 2001 to 2018 was extracted based on thresholds of ice/water pixel numbers, and their change trends over 18 years were calculated. The results of MODIS-derived lake ice phenology showed consistent variations with existing ice phenology data sets derived from passive microwave data. Generally, lakes in Xinjiang begin to freeze from October to December every year, and their ice cover periods end from March to June. The average ice cover duration for the 23 lakes is 167 days, of which 16 lakes have an average shortening rate of − 1.08 days/year and seven lakes have an average extending rate of 1.18 days/year. The majority of lakes experienced later freeze-up (17 lakes) and earlier break-up (18 lakes) from 2001 to 2018. Lake ice phenology is affected by both climatic factors and lake physicochemical characteristics, in which freeze-up dates are more easily affected by lake-specific factors such as lake area (r = 0.535), while climatic factors especially water surface temperature have greater impacts on lake break-up dates (r = − 0.874). Compared to air temperature, water surface temperature changes have a more direct influence on the variations in lake ice phenology, 1° increase in water surface temperature may cause the ice cover duration to decrease by 12 days, while precipitation changes have almost no effect on the lakes in Xinjiang. In some cases, lake changes such as changes to the area and mineralization may also have dominant impacts on lake ice phenology. © 2019, Springer Nature B.V.
英文关键词	Climate change; Lake ice phenology; MODIS; Xinjiang
语种	英语
scopus关键词	Atmospheric temperature; Biology; Climate change; Lakes; Radiometers; Stream flow; Surface properties; Moderate resolution imaging spectroradiometer; MODIS; Passive microwave data; Physicochemical characteristics; Regional climate changes; Water surface temperature; Xinjiang; Xinjiang Uygur Autonomous Region of China; Ice; climate change; global climate; ice cover; MODIS; observational method; pixel; regional climate; surface temperature; China; Xinjiang Uygur
来源期刊	Climatic Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/147241
作者单位	School of Geography and Ocean Science, Nanjing University, Nanjing, 210023, China; Jiangsu Provincial Key Laboratory of Geographic Information Science and Technology, Nanjing University, Nanjing, 210023, China; Key Laboratory for Satellite Mapping Technology and Applications of State Administration of Surveying, Mapping and Geoinformation of China, Nanjing University, Nanjing, 210023, China; Collaborative Innovation Center of Novel Software Technology and Industrialization, Nanjing, 210023, China; University Corporation for Polar Research, Beijing, 100086, China
推荐引用方式 GB/T 7714	Cai Y.,Ke C.-Q.,Yao G.,et al. MODIS-observed variations of lake ice phenology in Xinjiang; China[J],2020,158(2020-03-04).
APA	Cai Y.,Ke C.-Q.,Yao G.,&Shen X..(2020).MODIS-observed variations of lake ice phenology in Xinjiang; China.Climatic Change,158(2020-03-04).
MLA	Cai Y.,et al."MODIS-observed variations of lake ice phenology in Xinjiang; China".Climatic Change 158.2020-03-04(2020).