DOI: 10.1002/grl.50768
论文题名: Consequences of poor representation of Arctic sea-ice albedo and cloud-radiation interactions in the CMIP5 model ensemble
作者: Karlsson J. ; Svensson G.
刊名: Geophysical Research Letters
ISSN: 0094-8675
EISSN: 1944-8406
出版年: 2013
卷: 40, 期: 16 起始页码: 4374
结束页码: 4379
语种: 英语
英文关键词: Arctic
; cloud radiative effect
; CMIP5
; sea-ice albedo
Scopus关键词: Arctic
; Cloud radiative effects
; Cloud-radiation interactions
; CMIP5
; Coupled Model Intercomparison Project
; Radiative effects
; sea-ice albedo
; Surface energy budget
; Climate models
; Solar radiation
; Ice
; albedo
; annual cycle
; cloud
; energy budget
; ice cover
; numerical model
; radiation balance
; sea ice
; shortwave radiation
; Arctic Ocean
英文摘要: Clouds significantly influence the Arctic surface energy budget and a realistic representation of this impact is a key for proper simulation of the present-day and future climate. Considerable across-model spread in cloud variables remains in the fifth phase of Coupled Model Intercomparison Project ensemble and partly explains the substantial across-model spread in the surface radiative effect of the clouds. In summer, the extensive model differences in sea-ice albedo, which sets the potential of the cloud-albedo effect, are strongly positively correlated to their cloud radiative effect. This indicates that the model's sea-ice albedo not only determines the amount, but also the sign of its cloud radiative effect. The analysis further suggests that the present-day annual amplitude of sea-ice cover depends inversely on the model's sea-ice albedo. Given the present-day across-model spread in sea-ice albedo and coverage, a transition to a summer ice-free Arctic ocean translates to a model-span of increased surface shortwave absorption of about 75 W m -2. Key Points Sea-ice albedo is poorly constrained in the CMIP5 model ensemble Models with low sea-ice albedo have a more pronounced annual cycle of sea-ice Model's sea-ice albedo sets sign of its surface cloud radiative effect. © 2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84881644011&doi=10.1002%2fgrl.50768&partnerID=40&md5=a2233bdd2052eeb1b0b6a9d6a0b8277e
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5939
Appears in Collections: 气候减缓与适应
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作者单位: Department of Meteorology, Bolin Centre for Climate Research, Stockholm University, 106 91 Stockholm, Sweden
Recommended Citation:
Karlsson J.,Svensson G.. Consequences of poor representation of Arctic sea-ice albedo and cloud-radiation interactions in the CMIP5 model ensemble[J]. Geophysical Research Letters,2013-01-01,40(16).