The direct radiative effect of biomass burning aerosols over southern Africa
International audience 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) si...
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ftccsdartic:oai:HAL:hal-00301040v1 2023-11-12T03:59:47+01:00 The direct radiative effect of biomass burning aerosols over southern Africa Abel, S. J. Highwood, E. J. Haywood, J. M. Stringer, M. A. Department of Meteorology United Kingdom Met Office Exeter 2005-03-07 https://hal.science/hal-00301040 https://hal.science/hal-00301040/document https://hal.science/hal-00301040/file/acpd-5-1165-2005.pdf en eng HAL CCSD European Geosciences Union hal-00301040 https://hal.science/hal-00301040 https://hal.science/hal-00301040/document https://hal.science/hal-00301040/file/acpd-5-1165-2005.pdf info:eu-repo/semantics/OpenAccess ISSN: 1680-7367 EISSN: 1680-7375 Atmospheric Chemistry and Physics Discussions https://hal.science/hal-00301040 Atmospheric Chemistry and Physics Discussions, 2005, 5 (2), pp.1165-1211 [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2005 ftccsdartic 2023-10-21T23:13:47Z International audience 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 Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Abel, S. J. Highwood, E. J. Haywood, J. M. Stringer, M. A. The direct radiative effect of biomass burning aerosols over southern Africa |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience 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. |
author2 |
Department of Meteorology United Kingdom Met Office Exeter |
format |
Article in Journal/Newspaper |
author |
Abel, S. J. Highwood, E. J. Haywood, J. M. Stringer, M. A. |
author_facet |
Abel, S. J. Highwood, E. J. Haywood, J. M. Stringer, M. A. |
author_sort |
Abel, S. J. |
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 |
HAL CCSD |
publishDate |
2005 |
url |
https://hal.science/hal-00301040 https://hal.science/hal-00301040/document https://hal.science/hal-00301040/file/acpd-5-1165-2005.pdf |
genre |
Aerosol Robotic Network |
genre_facet |
Aerosol Robotic Network |
op_source |
ISSN: 1680-7367 EISSN: 1680-7375 Atmospheric Chemistry and Physics Discussions https://hal.science/hal-00301040 Atmospheric Chemistry and Physics Discussions, 2005, 5 (2), pp.1165-1211 |
op_relation |
hal-00301040 https://hal.science/hal-00301040 https://hal.science/hal-00301040/document https://hal.science/hal-00301040/file/acpd-5-1165-2005.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1782334946016231424 |