DOI: 10.1038/ngeo2673
论文题名: Amplification of Arctic warming by past air pollution reductions in Europe
作者: Navarro J.C.A. ; Varma V. ; Riipinen I. ; Seland Ø. ; Kirkevåg A. ; Struthers H. ; Iversen T. ; Hansson H.-C. ; Ekman A.M.L.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2016
卷: 9, 期: 4 起始页码: 277
结束页码: 281
语种: 英语
Scopus关键词: aerosol
; air quality
; amplification
; anthropogenic source
; atmospheric pollution
; climate change
; heat transfer
; Northern Hemisphere
; oceanic circulation
; particulate matter
; solar radiation
; warming
; Arctic Ocean
; Europe
英文摘要: The Arctic region is warming considerably faster than the rest of the globe, with important consequences for the ecosystems and human exploration of the region. However, the reasons behind this Arctic amplification are not entirely clear. As a result of measures to enhance air quality, anthropogenic emissions of particulate matter and its precursors have drastically decreased in parts of the Northern Hemisphere over the past three decades. Here we present simulations with an Earth system model with comprehensive aerosol physics and chemistry that show that the sulfate aerosol reductions in Europe since 1980 can potentially explain a significant fraction of Arctic warming over that period. Specifically, the Arctic region receives an additional 0.3 W m-2 of energy, and warms by 0.5 °C on annual average in simulations with declining European sulfur emissions in line with historical observations, compared with a model simulation with fixed European emissions at 1980 levels. Arctic warming is amplified mainly in fall and winter, but the warming is initiated in summer by an increase in incoming solar radiation as well as an enhanced poleward oceanic and atmospheric heat transport. The simulated summertime energy surplus reduces sea-ice cover, which leads to a transfer of heat from the Arctic Ocean to the atmosphere. We conclude that air quality regulations in the Northern Hemisphere, the ocean and atmospheric circulation, and Arctic climate are inherently linked. © 2016 Macmillan Publishers Limited. All rights reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/106042
Appears in Collections: 气候减缓与适应 科学计划与规划
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作者单位: Department of Environmental Science and Analytical Chemistry (ACES), Stockholm University, Stockholm, Sweden; Bolin Centre for Climate Research, Stockholm University, Stockholm, Sweden; Department of Meteorology, Stockholm University, Stockholm, Sweden; Norwegian Meteorological Institute, Postboks 43 Blindern, Oslo, Norway; National Supercomputer Center, Linköping University, Linköping, Sweden
Recommended Citation:
Navarro J.C.A.,Varma V.,Riipinen I.,et al. Amplification of Arctic warming by past air pollution reductions in Europe[J]. Nature Geoscience,2016-01-01,9(4)