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Three-dimensional solar radiation effects on the actinic flux field in a biomass-burning plume

Trentmann, Jörg and Früh, Barbara and Boucher, Olivier and Trautmann, Thomas and Andreae, Meinrat O. (2003) Three-dimensional solar radiation effects on the actinic flux field in a biomass-burning plume. Journal of Geophysical Research, 108 (17), doi:10.1029/2003JD003422,2003-.

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Official URL: http://www.agu.org/journals/jd/jd0317/2003JD003422/2003JD003422.pdf


Three-dimensional (3-D) solar radiative transfer models describe radiative transfer under inhomogeneous atmospheric conditions more accurately than the commonly used one-dimensional (1-D) radiative transfer models that assume horizontal homogeneity of the atmosphere. Here results of 3-D radiative transfer simulations for a biomass-burning plume are presented and compared with local one-dimensional (l-1-D) simulations, i.e., 1-D simulations in every column of the model domain. The spatial distribution of the aerosol particles was derived from a 3-D atmospheric transport simulation. We studied the impact of 3-D radiative effects on the actinic flux within the plume center. The differences in the actinic flux between results from the 3-D and the l-1-D simulations are considerable, ranging from -40% to more than +200%, depending on the wavelength, solar zenith angle, and the absorbing properties of the aerosol. The reason for this discrepancy is the neglect of horizontal photon transport in the 1-D simulation. These large 3-D effects on the actinic flux have the potential to influence significantly the in-plume photochemistry.

Document Type:Article
Additional Information: LIDO-Berichtsjahr=2004,
Title:Three-dimensional solar radiation effects on the actinic flux field in a biomass-burning plume
AuthorsInstitution or Email of Authors
Trentmann, JörgUNSPECIFIED
Boucher, OlivierUNSPECIFIED
Trautmann, ThomasUNSPECIFIED
Andreae, Meinrat O.UNSPECIFIED
Journal or Publication Title:Journal of Geophysical Research
Refereed publication:Yes
In ISI Web of Science:Yes
Page Range:doi:10.1029/2003JD003422,2003-
Keywords:Atmospheric Composition and Structure: Aerosols and particles; Atmospheric Composition and Structure: Pollution - urban and regional; Meteorology and Atmospheric Dynamics: Radiative processes
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EO - Erdbeobachtung
DLR - Research area:Space
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):UNSPECIFIED
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute
Deposited By: Cornelia Roehl
Deposited On:17 Feb 2006
Last Modified:06 Jan 2010 22:25

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