DOI: 10.1175/JCLI-D-17-0287.1
Scopus记录号: 2-s2.0-85040538052
论文题名: Elucidating the role of anthropogenic aerosols in Arctic sea ice variations
作者: Wang Y. ; Jiang J.H. ; Su H. ; Choi Y.-S. ; Huang L. ; Guo J. ; Yung Y.L.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2018
卷: 31, 期: 1 起始页码: 99
结束页码: 114
语种: 英语
英文关键词: Aerosol indirect effect
; Aerosol radiative effect
; Climate variability
; General circulation models
; Sea ice
Scopus关键词: Aerosols
; Atmospheric aerosols
; Atmospheric radiation
; Climate change
; Climate models
; Developing countries
; Greenhouse gases
; Pollution
; Sea ice
; Aerosol indirect effect
; Aerosol radiative forcing
; Anthropogenic aerosols
; Atmospheric feedbacks
; Climate variability
; General circulation model
; Particulate pollution
; Radiative effects
; Ice
; aerosol
; anthropogenic source
; climate change
; climate variation
; general circulation model
; Northern Hemisphere
; radiative forcing
; sea ice
; Arctic Ocean
英文摘要: Observations show that the Arctic sea ice cover has been shrinking at an unprecedented rate since the 1970s. Even though the accumulation of greenhouse gases in the atmosphere has been closely linked with the loss of Arctic sea ice, the role of atmospheric aerosols in past and future Arctic climate change remains elusive. Using a state-of-the-art fully coupled climate model, the authors assess the equilibrium responses of the Arctic sea ice to the different aerosol emission scenarios and investigate the pathways by which aerosols impose their influence in the Arctic. These sensitivity experiments show that the impacts of aerosol perturbations on the pace of sea ice melt effectively modulate the ocean circulation and atmospheric feedbacks. Because of the contrasting evolutions of particulate pollution in the developed and developing countries since the 1970s, the opposite aerosol forcings from different midlatitude regions are nearly canceled out in the Arctic during the boreal summer, resulting in a muted aerosol effect on the recent sea ice changes. Consequently, the greenhouse forcing alone can largely explain the observed Arctic sea ice loss up to the present. In the next few decades, the projected alleviation of particulate pollution in the Northern Hemisphere can contribute up to 20% of the total Arctic sea ice loss and 0.7°C surface warming over the Arctic. The authors' model simulations further show that aerosol microphysical effects on the Arctic clouds are the major component in the total aerosol radiative forcing over the Arctic. Compared to the aerosol-induced energy imbalance in lower latitudes outside the Arctic, the local radiative forcing by aerosol variations within the Arctic, due to either local emissions or long-range transports, is more efficient in determining the sea ice changes and Arctic climate change. © 2018 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111716
Appears in Collections: 气候减缓与适应
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作者单位: Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA, United States; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States; Department of Environmental Science and Engineering, Ewha Womans University, Seoul, South Korea; Joint Institute for Regional Earth System Science and Engineering, University of California, Los Angeles, Los Angeles, CA, United States; State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing, China
Recommended Citation:
Wang Y.,Jiang J.H.,Su H.,et al. Elucidating the role of anthropogenic aerosols in Arctic sea ice variations[J]. Journal of Climate,2018-01-01,31(1)