The direct radiative effect of biomass burning aerosols over southern Africa
A multi-column radiative transfer code is used to assess the direct radiative effect of biomass burning aerosols over the southern African region during September. The horizontal distribution of biomass smoke is estimated from two sources; i) General Circulation Model (GCM) simulations combined with...
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ftdoajarticles:oai:doaj.org/article:7dbe785c21f04fb7840ce552ecce911a 2023-05-15T13:06:05+02:00 The direct radiative effect of biomass burning aerosols over southern Africa S. J. Abel E. J. Highwood J. M. Haywood M. A. Stringer 2005-01-01T00:00:00Z https://doaj.org/article/7dbe785c21f04fb7840ce552ecce911a EN eng Copernicus Publications http://www.atmos-chem-phys.net/5/1999/2005/acp-5-1999-2005.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 1680-7316 1680-7324 https://doaj.org/article/7dbe785c21f04fb7840ce552ecce911a Atmospheric Chemistry and Physics, Vol 5, Iss 7, Pp 1999-2018 (2005) Physics QC1-999 Chemistry QD1-999 article 2005 ftdoajarticles 2022-12-30T23:12:45Z A multi-column radiative transfer code is used to assess the direct radiative effect of biomass burning aerosols over the southern African region during September. The horizontal distribution of biomass smoke is estimated from two sources; i) General Circulation Model (GCM) simulations combined with measurements from the Aerosol Robotic Network (AERONET) of Sun photometers; ii) data from the Moderate resolution Imaging Spectrometer (MODIS) satellite. Aircraft and satellite measurements are used to constrain the cloud fields, aerosol optical properties, vertical structure, and land surface albedo included in the model. The net regional direct effect of the biomass smoke is -3.1 to -3.6 Wm -2 at the top of atmosphere, and -14.4 to -17.0 Wm -2 at the surface for the MODIS and GCM distributions of aerosol. The direct radiative effect is shown to be highly sensitive to the prescribed vertical profiles and aerosol optical properties. The diurnal cycle of clouds and the spectral dependency of surface albedo are also shown to play an important role. Article in Journal/Newspaper Aerosol Robotic Network Directory of Open Access Journals: DOAJ Articles |
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Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Physics QC1-999 Chemistry QD1-999 |
spellingShingle |
Physics QC1-999 Chemistry QD1-999 S. J. Abel E. J. Highwood J. M. Haywood M. A. Stringer The direct radiative effect of biomass burning aerosols over southern Africa |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
A multi-column radiative transfer code is used to assess the direct radiative effect of biomass burning aerosols over the southern African region during September. The horizontal distribution of biomass smoke is estimated from two sources; i) General Circulation Model (GCM) simulations combined with measurements from the Aerosol Robotic Network (AERONET) of Sun photometers; ii) data from the Moderate resolution Imaging Spectrometer (MODIS) satellite. Aircraft and satellite measurements are used to constrain the cloud fields, aerosol optical properties, vertical structure, and land surface albedo included in the model. The net regional direct effect of the biomass smoke is -3.1 to -3.6 Wm -2 at the top of atmosphere, and -14.4 to -17.0 Wm -2 at the surface for the MODIS and GCM distributions of aerosol. The direct radiative effect is shown to be highly sensitive to the prescribed vertical profiles and aerosol optical properties. The diurnal cycle of clouds and the spectral dependency of surface albedo are also shown to play an important role. |
format |
Article in Journal/Newspaper |
author |
S. J. Abel E. J. Highwood J. M. Haywood M. A. Stringer |
author_facet |
S. J. Abel E. J. Highwood J. M. Haywood M. A. Stringer |
author_sort |
S. J. Abel |
title |
The direct radiative effect of biomass burning aerosols over southern Africa |
title_short |
The direct radiative effect of biomass burning aerosols over southern Africa |
title_full |
The direct radiative effect of biomass burning aerosols over southern Africa |
title_fullStr |
The direct radiative effect of biomass burning aerosols over southern Africa |
title_full_unstemmed |
The direct radiative effect of biomass burning aerosols over southern Africa |
title_sort |
direct radiative effect of biomass burning aerosols over southern africa |
publisher |
Copernicus Publications |
publishDate |
2005 |
url |
https://doaj.org/article/7dbe785c21f04fb7840ce552ecce911a |
genre |
Aerosol Robotic Network |
genre_facet |
Aerosol Robotic Network |
op_source |
Atmospheric Chemistry and Physics, Vol 5, Iss 7, Pp 1999-2018 (2005) |
op_relation |
http://www.atmos-chem-phys.net/5/1999/2005/acp-5-1999-2005.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 1680-7316 1680-7324 https://doaj.org/article/7dbe785c21f04fb7840ce552ecce911a |
_version_ |
1766402659513794560 |