Direct radiative effect of the Russian wildfires and its impact on air temperature and atmospheric dynamics during August 2010
In this study, we investigate the shortwave aerosol direct radiative forcing (ADRF) and its feedback on air temperature and atmospheric dynamics during a major fire event that occurred in Russia during August 2010. The methodology is based on an offline coupling between the CHIMERE chemistry-transpo...
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ftdoajarticles:oai:doaj.org/article:ea33f74ab0174b26adc759853f6d0745 2023-05-15T13:07:09+02:00 Direct radiative effect of the Russian wildfires and its impact on air temperature and atmospheric dynamics during August 2010 J. C. Péré B. Bessagnet M. Mallet F. Waquet I. Chiapello F. Minvielle V. Pont L. Menut 2014-02-01T00:00:00Z https://doi.org/10.5194/acp-14-1999-2014 https://doaj.org/article/ea33f74ab0174b26adc759853f6d0745 EN eng Copernicus Publications http://www.atmos-chem-phys.net/14/1999/2014/acp-14-1999-2014.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 1680-7316 1680-7324 doi:10.5194/acp-14-1999-2014 https://doaj.org/article/ea33f74ab0174b26adc759853f6d0745 Atmospheric Chemistry and Physics, Vol 14, Iss 4, Pp 1999-2013 (2014) Physics QC1-999 Chemistry QD1-999 article 2014 ftdoajarticles https://doi.org/10.5194/acp-14-1999-2014 2022-12-31T02:06:05Z In this study, we investigate the shortwave aerosol direct radiative forcing (ADRF) and its feedback on air temperature and atmospheric dynamics during a major fire event that occurred in Russia during August 2010. The methodology is based on an offline coupling between the CHIMERE chemistry-transport and the Weather Research and Forecasting (WRF) models. First, simulations for the period 5–12 August 2010 have been evaluated by using AERONET (AErosol RObotic NETwork) and satellite measurements of the POLarization and Directionality of the Earth's Reflectance (POLDER) and the Cloud-Aerosol LIdar with Orthogonal Polarization (CALIOP) sensors. During this period, elevated POLDER aerosol optical thickness (AOT) is found over a large part of eastern Europe, with values above 2 (at 550 nm) in the aerosol plume. According to CALIOP observations, particles remain confined to the first five kilometres of the atmospheric layer. Comparisons with satellite measurements show the ability of CHIMERE to reproduce the regional and vertical distribution of aerosols during their transport from the source region. Over Moscow, AERONET measurements indicate an important increase of AOT (340 nm) from 0.7 on 5 August to 2–4 between 6 and 10 August when the aerosol plume was advected over the city. Particles are mainly observed in the fine size mode (radius in the range 0.2–0.4 μm) and are characterized by elevated single-scattering albedo (SSA) (0.95–0.96 between 440 and 1020 nm). Comparisons of simulations with AERONET measurements show that aerosol physical–optical properties (size distribution, AOT, SSA) have been well simulated over Moscow in terms of intensity and/or spectral dependence. Secondly, modelled aerosol optical properties have been used as input in the radiative transfer code of WRF to evaluate their direct radiative impact. Simulations indicate a significant reduction of solar radiation at the ground (up to 80–150 W m −2 in diurnal averages over a large part of eastern Europe due to the presence of the aerosol plume. ... Article in Journal/Newspaper Aerosol Robotic Network Directory of Open Access Journals: DOAJ Articles Atmospheric Chemistry and Physics 14 4 1999 2013 |
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topic |
Physics QC1-999 Chemistry QD1-999 |
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Physics QC1-999 Chemistry QD1-999 J. C. Péré B. Bessagnet M. Mallet F. Waquet I. Chiapello F. Minvielle V. Pont L. Menut Direct radiative effect of the Russian wildfires and its impact on air temperature and atmospheric dynamics during August 2010 |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
In this study, we investigate the shortwave aerosol direct radiative forcing (ADRF) and its feedback on air temperature and atmospheric dynamics during a major fire event that occurred in Russia during August 2010. The methodology is based on an offline coupling between the CHIMERE chemistry-transport and the Weather Research and Forecasting (WRF) models. First, simulations for the period 5–12 August 2010 have been evaluated by using AERONET (AErosol RObotic NETwork) and satellite measurements of the POLarization and Directionality of the Earth's Reflectance (POLDER) and the Cloud-Aerosol LIdar with Orthogonal Polarization (CALIOP) sensors. During this period, elevated POLDER aerosol optical thickness (AOT) is found over a large part of eastern Europe, with values above 2 (at 550 nm) in the aerosol plume. According to CALIOP observations, particles remain confined to the first five kilometres of the atmospheric layer. Comparisons with satellite measurements show the ability of CHIMERE to reproduce the regional and vertical distribution of aerosols during their transport from the source region. Over Moscow, AERONET measurements indicate an important increase of AOT (340 nm) from 0.7 on 5 August to 2–4 between 6 and 10 August when the aerosol plume was advected over the city. Particles are mainly observed in the fine size mode (radius in the range 0.2–0.4 μm) and are characterized by elevated single-scattering albedo (SSA) (0.95–0.96 between 440 and 1020 nm). Comparisons of simulations with AERONET measurements show that aerosol physical–optical properties (size distribution, AOT, SSA) have been well simulated over Moscow in terms of intensity and/or spectral dependence. Secondly, modelled aerosol optical properties have been used as input in the radiative transfer code of WRF to evaluate their direct radiative impact. Simulations indicate a significant reduction of solar radiation at the ground (up to 80–150 W m −2 in diurnal averages over a large part of eastern Europe due to the presence of the aerosol plume. ... |
format |
Article in Journal/Newspaper |
author |
J. C. Péré B. Bessagnet M. Mallet F. Waquet I. Chiapello F. Minvielle V. Pont L. Menut |
author_facet |
J. C. Péré B. Bessagnet M. Mallet F. Waquet I. Chiapello F. Minvielle V. Pont L. Menut |
author_sort |
J. C. Péré |
title |
Direct radiative effect of the Russian wildfires and its impact on air temperature and atmospheric dynamics during August 2010 |
title_short |
Direct radiative effect of the Russian wildfires and its impact on air temperature and atmospheric dynamics during August 2010 |
title_full |
Direct radiative effect of the Russian wildfires and its impact on air temperature and atmospheric dynamics during August 2010 |
title_fullStr |
Direct radiative effect of the Russian wildfires and its impact on air temperature and atmospheric dynamics during August 2010 |
title_full_unstemmed |
Direct radiative effect of the Russian wildfires and its impact on air temperature and atmospheric dynamics during August 2010 |
title_sort |
direct radiative effect of the russian wildfires and its impact on air temperature and atmospheric dynamics during august 2010 |
publisher |
Copernicus Publications |
publishDate |
2014 |
url |
https://doi.org/10.5194/acp-14-1999-2014 https://doaj.org/article/ea33f74ab0174b26adc759853f6d0745 |
genre |
Aerosol Robotic Network |
genre_facet |
Aerosol Robotic Network |
op_source |
Atmospheric Chemistry and Physics, Vol 14, Iss 4, Pp 1999-2013 (2014) |
op_relation |
http://www.atmos-chem-phys.net/14/1999/2014/acp-14-1999-2014.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 1680-7316 1680-7324 doi:10.5194/acp-14-1999-2014 https://doaj.org/article/ea33f74ab0174b26adc759853f6d0745 |
op_doi |
https://doi.org/10.5194/acp-14-1999-2014 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
14 |
container_issue |
4 |
container_start_page |
1999 |
op_container_end_page |
2013 |
_version_ |
1766037010033672192 |