Simulation of the transport, vertical distribution, optical properties and radiative impact of smoke aerosols with the ALADIN regional climate model during the ORACLES-2016 and LASIC experiments
Estimates of the direct radiative effect (DRE) from absorbing smoke aerosols over the southeast Atlantic Ocean (SAO) require simulation of the microphysical and optical properties of stratocumulus clouds as well as of the altitude and shortwave (SW) optical properties of biomass burning aerosols (BB...
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Online Access: | http://www.osti.gov/servlets/purl/1679949 https://www.osti.gov/biblio/1679949 https://doi.org/10.5194/acp-19-4963-2019 |
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ftosti:oai:osti.gov:1679949 2023-07-30T03:55:33+02:00 Simulation of the transport, vertical distribution, optical properties and radiative impact of smoke aerosols with the ALADIN regional climate model during the ORACLES-2016 and LASIC experiments Mallet, Marc Nabat, Pierre Zuidema, Paquita Redemann, Jens Sayer, Andrew Mark Stengel, Martin Schmidt, Sebastian Cochrane, Sabrina Burton, Sharon Ferrare, Richard Meyer, Kerry Saide, Pablo Jethva, Hiren Torres, Omar Wood, Robert Saint Martin, David Roehrig, Romain Hsu, Christina Formenti, Paola 2023-07-03 application/pdf http://www.osti.gov/servlets/purl/1679949 https://www.osti.gov/biblio/1679949 https://doi.org/10.5194/acp-19-4963-2019 unknown http://www.osti.gov/servlets/purl/1679949 https://www.osti.gov/biblio/1679949 https://doi.org/10.5194/acp-19-4963-2019 doi:10.5194/acp-19-4963-2019 54 ENVIRONMENTAL SCIENCES 2023 ftosti https://doi.org/10.5194/acp-19-4963-2019 2023-07-11T09:49:18Z Estimates of the direct radiative effect (DRE) from absorbing smoke aerosols over the southeast Atlantic Ocean (SAO) require simulation of the microphysical and optical properties of stratocumulus clouds as well as of the altitude and shortwave (SW) optical properties of biomass burning aerosols (BBAs). In this study, we take advantage of the large number of observations acquired during the ObseRvations of Aerosols above Clouds and their intEractionS (ORACLES-2016) and Layered Atlantic Smoke Interactions with Clouds (LASIC) projects during September 2016 and compare them with datasets from the ALADIN-Climate (Aire Limitée Adaptation dynamique Développement InterNational) regional model. The model provides a good representation of the liquid water path but the low cloud fraction is underestimated compared to satellite data. The modeled total-column smoke aerosol optical depth (AOD) and above-cloud AOD are consistent ( ~0.7 over continental sources and ~0.3 over the SAO at 550 nm) with the Modern-Era Retrospective analysis for Research and Applications version 2 (MERRA-2), Ozone Monitoring Instrument (OMI) or Moderate Resolution Imaging Spectroradiometer (MODIS) data. The simulations indicate smoke transport over the SAO occurs mainly between 2 and 4 km, consistent with surface and aircraft lidar observations. The BBA single scattering albedo is slightly overestimated compared to the Aerosol Robotic Network (AERONET) and more significantly when compared to Ascension Island surface observations. The difference could be due to the absence of internal mixing treatment in the ALADIN-Climate model. The SSA overestimate leads to an underestimation of the simulated SW radiative heating compared to ORACLES data. ALADIN-Climate simulates a positive (monthly mean) SW DRE of about +6 W m -2 over the SAO (20 ° S–10 ° N and 10 ° W–20 ° E) at the top of the atmosphere and in all-sky conditions. Over the continent, the presence of BBA is shown to significantly decrease the net surface SW flux, through direct and semi-direct ... Other/Unknown Material Aerosol Robotic Network SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) Merra ENVELOPE(12.615,12.615,65.816,65.816) Atmospheric Chemistry and Physics 19 7 4963 4990 |
institution |
Open Polar |
collection |
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
op_collection_id |
ftosti |
language |
unknown |
topic |
54 ENVIRONMENTAL SCIENCES |
spellingShingle |
54 ENVIRONMENTAL SCIENCES Mallet, Marc Nabat, Pierre Zuidema, Paquita Redemann, Jens Sayer, Andrew Mark Stengel, Martin Schmidt, Sebastian Cochrane, Sabrina Burton, Sharon Ferrare, Richard Meyer, Kerry Saide, Pablo Jethva, Hiren Torres, Omar Wood, Robert Saint Martin, David Roehrig, Romain Hsu, Christina Formenti, Paola Simulation of the transport, vertical distribution, optical properties and radiative impact of smoke aerosols with the ALADIN regional climate model during the ORACLES-2016 and LASIC experiments |
topic_facet |
54 ENVIRONMENTAL SCIENCES |
description |
Estimates of the direct radiative effect (DRE) from absorbing smoke aerosols over the southeast Atlantic Ocean (SAO) require simulation of the microphysical and optical properties of stratocumulus clouds as well as of the altitude and shortwave (SW) optical properties of biomass burning aerosols (BBAs). In this study, we take advantage of the large number of observations acquired during the ObseRvations of Aerosols above Clouds and their intEractionS (ORACLES-2016) and Layered Atlantic Smoke Interactions with Clouds (LASIC) projects during September 2016 and compare them with datasets from the ALADIN-Climate (Aire Limitée Adaptation dynamique Développement InterNational) regional model. The model provides a good representation of the liquid water path but the low cloud fraction is underestimated compared to satellite data. The modeled total-column smoke aerosol optical depth (AOD) and above-cloud AOD are consistent ( ~0.7 over continental sources and ~0.3 over the SAO at 550 nm) with the Modern-Era Retrospective analysis for Research and Applications version 2 (MERRA-2), Ozone Monitoring Instrument (OMI) or Moderate Resolution Imaging Spectroradiometer (MODIS) data. The simulations indicate smoke transport over the SAO occurs mainly between 2 and 4 km, consistent with surface and aircraft lidar observations. The BBA single scattering albedo is slightly overestimated compared to the Aerosol Robotic Network (AERONET) and more significantly when compared to Ascension Island surface observations. The difference could be due to the absence of internal mixing treatment in the ALADIN-Climate model. The SSA overestimate leads to an underestimation of the simulated SW radiative heating compared to ORACLES data. ALADIN-Climate simulates a positive (monthly mean) SW DRE of about +6 W m -2 over the SAO (20 ° S–10 ° N and 10 ° W–20 ° E) at the top of the atmosphere and in all-sky conditions. Over the continent, the presence of BBA is shown to significantly decrease the net surface SW flux, through direct and semi-direct ... |
author |
Mallet, Marc Nabat, Pierre Zuidema, Paquita Redemann, Jens Sayer, Andrew Mark Stengel, Martin Schmidt, Sebastian Cochrane, Sabrina Burton, Sharon Ferrare, Richard Meyer, Kerry Saide, Pablo Jethva, Hiren Torres, Omar Wood, Robert Saint Martin, David Roehrig, Romain Hsu, Christina Formenti, Paola |
author_facet |
Mallet, Marc Nabat, Pierre Zuidema, Paquita Redemann, Jens Sayer, Andrew Mark Stengel, Martin Schmidt, Sebastian Cochrane, Sabrina Burton, Sharon Ferrare, Richard Meyer, Kerry Saide, Pablo Jethva, Hiren Torres, Omar Wood, Robert Saint Martin, David Roehrig, Romain Hsu, Christina Formenti, Paola |
author_sort |
Mallet, Marc |
title |
Simulation of the transport, vertical distribution, optical properties and radiative impact of smoke aerosols with the ALADIN regional climate model during the ORACLES-2016 and LASIC experiments |
title_short |
Simulation of the transport, vertical distribution, optical properties and radiative impact of smoke aerosols with the ALADIN regional climate model during the ORACLES-2016 and LASIC experiments |
title_full |
Simulation of the transport, vertical distribution, optical properties and radiative impact of smoke aerosols with the ALADIN regional climate model during the ORACLES-2016 and LASIC experiments |
title_fullStr |
Simulation of the transport, vertical distribution, optical properties and radiative impact of smoke aerosols with the ALADIN regional climate model during the ORACLES-2016 and LASIC experiments |
title_full_unstemmed |
Simulation of the transport, vertical distribution, optical properties and radiative impact of smoke aerosols with the ALADIN regional climate model during the ORACLES-2016 and LASIC experiments |
title_sort |
simulation of the transport, vertical distribution, optical properties and radiative impact of smoke aerosols with the aladin regional climate model during the oracles-2016 and lasic experiments |
publishDate |
2023 |
url |
http://www.osti.gov/servlets/purl/1679949 https://www.osti.gov/biblio/1679949 https://doi.org/10.5194/acp-19-4963-2019 |
long_lat |
ENVELOPE(12.615,12.615,65.816,65.816) |
geographic |
Merra |
geographic_facet |
Merra |
genre |
Aerosol Robotic Network |
genre_facet |
Aerosol Robotic Network |
op_relation |
http://www.osti.gov/servlets/purl/1679949 https://www.osti.gov/biblio/1679949 https://doi.org/10.5194/acp-19-4963-2019 doi:10.5194/acp-19-4963-2019 |
op_doi |
https://doi.org/10.5194/acp-19-4963-2019 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
19 |
container_issue |
7 |
container_start_page |
4963 |
op_container_end_page |
4990 |
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1772816765254893568 |