DOI: 10.1002/2013JD019750
论文题名: Radiative effect of aerosols above the northern and southern Atlantic Ocean as determined from shipborne lidar observations
作者: Kanitz T. ; Ansmann A. ; Seifert P. ; Engelmann R. ; Kalisch J. ; Althausen D.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 22 起始页码: 12556
结束页码: 12565
语种: 英语
英文关键词: direct solar aerosol radiative effect
; latitudinal distribution of aerosols
; mixed dust/smoke layer
; shipborne lidar measurements above the Atlantic
Scopus关键词: Boundary layers
; Dust
; Optical radar
; Ships
; Troposphere
; Free troposphere
; Latitudinal distribution
; Lidar measurements
; Lidar observation
; mixed dust/smoke layer
; Radiative effects
; Radiative transfer calculations
; Top of atmospheres
; Aerosols
; aerosol property
; atmospheric pollution
; dust
; lidar
; marine atmosphere
; radiative forcing
; research vessel
; shipborne measurement
; smoke
; Atlantic Ocean
; Germany
; South Africa
; South America
英文摘要: The direct solar radiative effect of aerosols over the Atlantic Ocean was investigated on the basis of aerosol Raman/polarization lidar observations aboard the research vessel Polarsternbetween Germany (50°N) and either South America (50°S) or South Africa (40°S) in 2009 and 2010. First, a case study of complex aerosol conditions with marine aerosol, dust, and smoke particles in the boundary layer and free troposphere is presented to demonstrate that detailed knowledge of aerosol layering (boundary layer, free troposphere) and aerosol mixing state is required for an accurate determination of the resulting radiative effects. A statistical analysis based on all lidar observations revealed the highest daily mean radiative effect (-43±59 W m-2at the surface, -14±18 W m-2at top of atmosphere) in the latitudinal belt from 0°N-15°N in the Saharan dust outflow region. Mean aerosol radiative effects of the polluted northern and clean southern midlatitudes were contrasted. In the northern midlatitudes, the averaged aerosol radiative effect of all simulations was -24±33 W m -2at the surface which is a factor of 1.6 higher than at similar southern hemispheric latitudes. The simulations based on the lidar observations are in good agreement with colocated pyranometer measurements. Key Points Direct solar aerosol radiative effect of a mixed dust/smoke layer Direct solar aerosol radiative effect above the Atlantic for latitudinal belts Good agreement of radiative-transfer calculations and pyranometer measurements © 2013 The Authors. Journal of Geophysical Research: Atmospheres published by Wiley on behalf of the American Geophysical Union. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63152
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Leibniz Institute for Tropospheric Research, Permoserstr. 15, DE-04318 Leipzig, Germany
Recommended Citation:
Kanitz T.,Ansmann A.,Seifert P.,et al. Radiative effect of aerosols above the northern and southern Atlantic Ocean as determined from shipborne lidar observations[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(22)