DOI: 10.1007/s00382-017-3974-5
Scopus记录号: 2-s2.0-85033463505
论文题名: An energy balance model exploration of the impacts of interactions between surface albedo, cloud cover and water vapor on polar amplification
作者: Södergren A.H. ; McDonald A.J. ; Bodeker G.E.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2018
卷: 51, 期: 2018-05-06 起始页码: 1639
结束页码: 1658
语种: 英语
英文关键词: Climate feedback
; Cloud feedback
; Energy balance model
; Polar amplification
; Surface albedo feedback
; Water vapor feedback
Scopus关键词: albedo
; atmospheric modeling
; climate feedback
; cloud
; energy balance
; nonlinearity
; polar region
; water vapor
英文摘要: We examine the effects of non-linear interactions between surface albedo, water vapor and cloud cover (referred to as climate variables) on amplified warming of the polar regions, using a new energy balance model. Our simulations show that the sum of the contributions to surface temperature changes due to any variable considered in isolation is smaller than the temperature changes from coupled feedback simulations. This non-linearity is strongest when all three climate variables are allowed to interact. Surface albedo appears to be the strongest driver of this non-linear behavior, followed by water vapor and clouds. This is because increases in longwave radiation absorbed by the surface, related to increases in water vapor and clouds, and increases in surface absorbed shortwave radiation caused by a decrease in surface albedo, amplify each other. Furthermore, our results corroborate previous findings that while increases in cloud cover and water vapor, along with the greenhouse effect itself, warm the polar regions, water vapor also significantly warms equatorial regions, which reduces polar amplification. Changes in surface albedo drive large changes in absorption of incoming shortwave radiation, thereby enhancing surface warming. Unlike high latitudes, surface albedo change at low latitudes are more constrained. Interactions between surface albedo, water vapor and clouds drive larger increases in temperatures in the polar regions compared to low latitudes. This is in spite of the fact that, due to a forcing, cloud cover increases at high latitudes and decreases in low latitudes, and that water vapor significantly enhances warming at low latitudes. © 2017, Springer-Verlag GmbH Germany.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109153
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Department of Physics and Astronomy, University of Canterbury, Christchurch, New Zealand; Bodeker Scientific, 42 Russell Street, Alexandra, New Zealand
Recommended Citation:
Södergren A.H.,McDonald A.J.,Bodeker G.E.. An energy balance model exploration of the impacts of interactions between surface albedo, cloud cover and water vapor on polar amplification[J]. Climate Dynamics,2018-01-01,51(2018-05-06)