DOI: 10.1002/2017JD027248
Scopus记录号: 2-s2.0-85040225886
论文题名: Isolating the Liquid Cloud Response to Recent Arctic Sea Ice Variability Using Spaceborne Lidar Observations
作者: Morrison A.L. ; Kay J.E. ; Chepfer H. ; Guzman R. ; Yettella V.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期: 1 起始页码: 473
结束页码: 490
语种: 英语
英文关键词: Arctic
; climate change
; clouds
; cryosphere
; lidar
; sea ice
Scopus关键词: atmospheric circulation
; CALIPSO
; climate change
; cloud cover
; cryosphere
; human activity
; ice cover
; lidar
; open water
; sea ice
; Arctic Ocean
英文摘要: While the radiative influence of clouds on Arctic sea ice is known, the influence of sea ice cover on Arctic clouds is challenging to detect, separate from atmospheric circulation, and attribute to human activities. Providing observational constraints on the two-way relationship between sea ice cover and Arctic clouds is important for predicting the rate of future sea ice loss. Here we use 8 years of CALIPSO (Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations) spaceborne lidar observations from 2008 to 2015 to analyze Arctic cloud profiles over sea ice and over open water. Using a novel surface mask to restrict our analysis to where sea ice concentration varies, we isolate the influence of sea ice cover on Arctic Ocean clouds. The study focuses on clouds containing liquid water because liquid-containing clouds are the most important cloud type for radiative fluxes and therefore for sea ice melt and growth. Summer is the only season with no observed cloud response to sea ice cover variability: liquid cloud profiles are nearly identical over sea ice and over open water. These results suggest that shortwave summer cloud feedbacks do not slow long-term summer sea ice loss. In contrast, more liquid clouds are observed over open water than over sea ice in the winter, spring, and fall in the 8 year mean and in each individual year. Observed fall sea ice loss cannot be explained by natural variability alone, which suggests that observed increases in fall Arctic cloud cover over newly open water are linked to human activities. ©2018. 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/114694
Appears in Collections: 气候减缓与适应
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作者单位: Department of Atmospheric and Oceanic Sciences, University of Colorado Boulder, Boulder, CO, United States; Cooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, Boulder, CO, United States; Laboratoire de Météorologie Dynamique, IPSL, Université Pierre et Marie Curie, Paris, France; Laboratoire de Météorologie Dynamique, IPSL, Centre National de la Recherche Scientifique, Ecole Polytechnique, Palaiseau, France
Recommended Citation:
Morrison A.L.,Kay J.E.,Chepfer H.,et al. Isolating the Liquid Cloud Response to Recent Arctic Sea Ice Variability Using Spaceborne Lidar Observations[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(1)