DOI: 10.1002/2015GL066275
论文题名: The nonlinear relationship between albedo and cloud fraction on near-global, monthly mean scale in observations and in the CMIP5 model ensemble
作者: Engström A. ; Bender F.A.-M. ; Charlson R.J. ; Wood R.
刊名: Geophysical Research Letters
ISSN: 0094-8456
EISSN: 1944-8187
出版年: 2015
卷: 42, 期: 21 起始页码: 9571
结束页码: 9578
语种: 英语
英文关键词: Albedo
; Cloud Fraction
; CMIP5
Scopus关键词: Population statistics
; Solar radiation
; Albedo
; Anthropogenic aerosols
; Cloud fraction
; CMIP5
; Exponential curves
; Non-linear relationships
; Observational data
; Satellite observations
; Climate models
; aerosol
; albedo
; anthropogenic effect
; climate modeling
; cloud cover
; marine atmosphere
; nonlinearity
; reflectance
; satellite data
; sensitivity analysis
; temporal variation
英文摘要: We study the relation between monthly mean albedo and cloud fraction over ocean, 60°S-60°N. Satellite observations indicate that these clouds all fall on the same near-exponential curve, with a monotonic distribution over the ranges of cloud fractions and albedo. Using these observational data as a reference, we examine the degree to which 26 climate models capture this feature of the near-global marine cloud population. Models show a general increase in albedo with increasing cloud fraction, but none of them display a relation that is as well defined as that characterizing the observations. Models typically display larger albedo variability at a given cloud fraction, larger sensitivity in albedo to changes in cloud fraction, and lower cloud fractions. Several models also show branched distributions, contrasting with the smooth observational relation. In the models the present-day cloud scenes are more reflective than the preindustrial, demonstrating the simulated impact of anthropogenic aerosols on planetary albedo. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84955180873&doi=10.1002%2f2015GL066275&partnerID=40&md5=5453078db7911dca21c97215e8150c6a
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8072
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Department of Meteorology, Bolin Centre for Climate Research, Stockholm University, Stockholm, Sweden
Recommended Citation:
Engström A.,Bender F.A.-M.,Charlson R.J.,et al. The nonlinear relationship between albedo and cloud fraction on near-global, monthly mean scale in observations and in the CMIP5 model ensemble[J]. Geophysical Research Letters,2015-01-01,42(21).