DOI: 10.1002/2017JD027010
Scopus记录号: 2-s2.0-85040173640
论文题名: Snow Cover and Vegetation-Induced Decrease in Global Albedo From 2002 to 2016
作者: Li Q. ; Ma M. ; Wu X. ; Yang H.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期: 1 起始页码: 124
结束页码: 138
语种: 英语
英文关键词: albedo
; global
; SINDVI
; snow cover change
; time series analysis
; trend analysis
Scopus关键词: albedo
; annual variation
; boreal forest
; global climate
; land cover
; MODIS
; Northern Hemisphere
; radiation budget
; snow cover
; spatiotemporal analysis
; time series analysis
; trend analysis
; tundra
; vegetation dynamics
; Canada
; Central Asia
; China
; Europe
; Siberia
英文摘要: Land surface albedo is an essential parameter in regional and global climate models, and it is markedly influenced by land cover change. Variations in the albedo can affect the surface radiation budget and further impact the global climate. In this study, the interannual variation of albedo from 2002 to 2016 was estimated on the global scale using Moderate Resolution Imaging Spectroradiometer (MODIS) datasets. The presence and causes of the albedo changes for each specific region were also explored. From 2002 to 2016, the MODIS-based albedo decreased globally, snow cover declined by 0.970 (percent per pixel), while the seasonally integrated normalized difference vegetation index increased by 0.175. Some obvious increases in the albedo were detected in Central Asia, northeastern China, parts of the boreal forest in Canada, and the temperate steppe in North America. In contrast, noticeable decreases in the albedo were found in the Siberian tundra, Europe, southeastern Australia, and northeastern regions of North America. In the Northern Hemisphere, the greening trend at high latitudes made more contribution to the decline in the albedo. However, the dramatic fluctuation of snow-cover at midlatitudes predominated in the change of albedo. Our analysis can help to understand the roles that vegetation and snow cover play in the variation of albedo on global and regional scales. ©2017. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114686
Appears in Collections: 气候减缓与适应
There are no files associated with this item.
作者单位: Chongqing Engineering Research Center for Remote Sensing Big Data Application, School of Geographical Sciences, Southwest University, Chongqing, China; State Key Laboratory of Remote Sensing Science, Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing, China; Department of Geography and Environmental Science, University of Reading, Reading, United Kingdom
Recommended Citation:
Li Q.,Ma M.,Wu X.,et al. Snow Cover and Vegetation-Induced Decrease in Global Albedo From 2002 to 2016[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(1)