DOI: 10.1002/2014GL061103
论文题名: Aerosol direct radiative effect of smoke over clouds over the southeast Atlantic Ocean from 2006 to 2009
作者: De Graaf M. ; Bellouin N. ; Tilstra L.G. ; Haywood J. ; Stammes P.
刊名: Geophysical Research Letters
ISSN: 0094-9648
EISSN: 1944-9379
出版年: 2014
卷: 41, 期: 21 起始页码: 7723
结束页码: 7730
语种: 英语
英文关键词: aerosols
; climate change
; clouds
; remote sensing
Scopus关键词: Aerosols
; Climate change
; Clouds
; Computer simulation
; Loading
; Remote sensing
; Spectrometers
; Aerosol absorption
; Aerosol loading
; Climate model simulations
; Cloud properties
; Environmental model
; Radiative effects
; Satellite observations
; Scanning imaging absorption spectrometer for atmospheric chartography
; Climate models
; absorption
; aerosol
; climate modeling
; cloud radiative forcing
; estimation method
; smoke
; Africa
; Atlantic Ocean
; Atlantic Ocean (Southeast)
英文摘要: The aerosol direct radiative effect (DRE) of African smoke was analyzed in cloud scenes over the southeast Atlantic Ocean, using Scanning Imaging Absorption Spectrometer for Atmospheric Chartography (SCIAMACHY) satellite observations and Hadley Centre Global Environmental Model version 2 (HadGEM2) climate model simulations. The observed mean DRE was about 30-35 W m-2 in August and September 2006-2009. In some years, short episodes of high-aerosol DRE can be observed, due to high-aerosol loadings, while in other years the loadings are lower but more prolonged. Climate models that use evenly distributed monthly averaged emission fields will not reproduce these high-aerosol loadings. Furthermore, the simulated monthly mean aerosol DRE in HadGEM2 is only about 6 W m-2 in August. The difference with SCIAMACHY mean observations can be partly explained by an underestimation of the aerosol absorption Ångström exponent in the ultraviolet. However, the subsequent increase of aerosol DRE simulation by about 20% is not enough to explain the observed discrepancy between simulations and observations. Key PointsNew aerosol radiative effects above clouds are presentedClimate models do not reproduce these details wellAerosol and cloud properties need to be measured to understand the differences ©2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84912059025&doi=10.1002%2f2014GL061103&partnerID=40&md5=0ea20a79ae6bb9a673d5b641982f3b90
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6912
Appears in Collections: 气候减缓与适应
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作者单位: Geosciences and Remote Sensing Department, Delft University of Technology, Delft, Netherlands
Recommended Citation:
De Graaf M.,Bellouin N.,Tilstra L.G.,et al. Aerosol direct radiative effect of smoke over clouds over the southeast Atlantic Ocean from 2006 to 2009[J]. Geophysical Research Letters,2014-01-01,41(21).