Transport and Variability of Tropospheric Ozone over Oceania and Southern Pacific during the 2019–20 Australian Bushfires
The present study contributes to the scientific effort for a better understanding of the potential of the Australian biomass burning events to influence tropospheric trace gas abundances at the regional scale. In order to exclude the influence of the long-range transport of ozone precursors from bio...
Main Authors: | , , , , , , , , , , , , , , , , , , |
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Format: | Article |
Language: | English |
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MDPI AG
2021-08-01
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Series: | Remote Sensing |
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Online Access: | https://www.mdpi.com/2072-4292/13/16/3092 |
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doaj-34233b53b17a412bb9d0f2759355e0ec |
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record_format |
Article |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Nelson Bègue Hassan Bencherif Fabrice Jégou Hélène Vérèmes Sergey Khaykin Gisèle Krysztofiak Thierry Portafaix Valentin Duflot Alexandre Baron Gwenaël Berthet Corinna Kloss Guillaume Payen Philippe Keckhut Pierre-François Coheur Cathy Clerbaux Dan Smale John Robinson Richard Querel Penny Smale |
spellingShingle |
Nelson Bègue Hassan Bencherif Fabrice Jégou Hélène Vérèmes Sergey Khaykin Gisèle Krysztofiak Thierry Portafaix Valentin Duflot Alexandre Baron Gwenaël Berthet Corinna Kloss Guillaume Payen Philippe Keckhut Pierre-François Coheur Cathy Clerbaux Dan Smale John Robinson Richard Querel Penny Smale Transport and Variability of Tropospheric Ozone over Oceania and Southern Pacific during the 2019–20 Australian Bushfires Remote Sensing tropospheric ozone Australian fires carbon monoxide plume transport |
author_facet |
Nelson Bègue Hassan Bencherif Fabrice Jégou Hélène Vérèmes Sergey Khaykin Gisèle Krysztofiak Thierry Portafaix Valentin Duflot Alexandre Baron Gwenaël Berthet Corinna Kloss Guillaume Payen Philippe Keckhut Pierre-François Coheur Cathy Clerbaux Dan Smale John Robinson Richard Querel Penny Smale |
author_sort |
Nelson Bègue |
title |
Transport and Variability of Tropospheric Ozone over Oceania and Southern Pacific during the 2019–20 Australian Bushfires |
title_short |
Transport and Variability of Tropospheric Ozone over Oceania and Southern Pacific during the 2019–20 Australian Bushfires |
title_full |
Transport and Variability of Tropospheric Ozone over Oceania and Southern Pacific during the 2019–20 Australian Bushfires |
title_fullStr |
Transport and Variability of Tropospheric Ozone over Oceania and Southern Pacific during the 2019–20 Australian Bushfires |
title_full_unstemmed |
Transport and Variability of Tropospheric Ozone over Oceania and Southern Pacific during the 2019–20 Australian Bushfires |
title_sort |
transport and variability of tropospheric ozone over oceania and southern pacific during the 2019–20 australian bushfires |
publisher |
MDPI AG |
series |
Remote Sensing |
issn |
2072-4292 |
publishDate |
2021-08-01 |
description |
The present study contributes to the scientific effort for a better understanding of the potential of the Australian biomass burning events to influence tropospheric trace gas abundances at the regional scale. In order to exclude the influence of the long-range transport of ozone precursors from biomass burning plumes originating from Southern America and Africa, the analysis of the Australian smoke plume has been driven over the period December 2019 to January 2020. This study uses satellite (IASI, MLS, MODIS, CALIOP) and ground-based (sun-photometer, FTIR, ozone radiosondes) observations. The highest values of aerosol optical depth (AOD) and carbon monoxide total columns are observed over Southern and Central Australia. Transport is responsible for the spatial and temporal distributions of aerosols and carbon monoxide over Australia, and also the transport of the smoke plume outside the continent. The dispersion of the tropospheric smoke plume over Oceania and Southern Pacific extends from tropical to extratropical latitudes. Ozone radiosonde measurements performed at Samoa (14.4°S, 170.6°W) and Lauder (45.0°S, 169.4°E) indicate an increase in mid-tropospheric ozone (6–9 km) (from 10% to 43%) linked to the Australian biomass burning plume. This increase in mid-tropospheric ozone induced by the transport of the smoke plume was found to be consistent with MLS observations over the tropical and extratropical latitudes. The smoke plume over the Southern Pacific was organized as a stretchable anticyclonic rolling which impacted the ozone variability in the tropical and subtropical upper-troposphere over Oceania. This is corroborated by the ozone profile measurements at Samoa which exhibit an enhanced ozone layer (29%) in the upper-troposphere. Our results suggest that the transport of Australian biomass burning plumes have significantly impacted the vertical distribution of ozone in the mid-troposphere southern tropical to extratropical latitudes during the 2019–20 extreme Australian bushfires. |
topic |
tropospheric ozone Australian fires carbon monoxide plume transport |
url |
https://www.mdpi.com/2072-4292/13/16/3092 |
work_keys_str_mv |
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doaj-34233b53b17a412bb9d0f2759355e0ec2021-08-26T14:17:15ZengMDPI AGRemote Sensing2072-42922021-08-01133092309210.3390/rs13163092Transport and Variability of Tropospheric Ozone over Oceania and Southern Pacific during the 2019–20 Australian BushfiresNelson Bègue0Hassan Bencherif1Fabrice Jégou2Hélène Vérèmes3Sergey Khaykin4Gisèle Krysztofiak5Thierry Portafaix6Valentin Duflot7Alexandre Baron8Gwenaël Berthet9Corinna Kloss10Guillaume Payen11Philippe Keckhut12Pierre-François Coheur13Cathy Clerbaux14Dan Smale15John Robinson16Richard Querel17Penny Smale18Laboratoire de l’Atmosphère et des Cyclones (LACy, UMR 8105 CNRS, Université de la Réunion, Météo-France), Université de La Réunion, 97400 Saint-Denis de La Réunion, FranceLaboratoire de l’Atmosphère et des Cyclones (LACy, UMR 8105 CNRS, Université de la Réunion, Météo-France), Université de La Réunion, 97400 Saint-Denis de La Réunion, FranceLaboratoire de Physique et Chimie de l’Environnement et de l’Espace (LPC2E), Université d’Orléans, 45100 Orléans, FranceLaboratoire de l’Atmosphère et des Cyclones (LACy, UMR 8105 CNRS, Université de la Réunion, Météo-France), Université de La Réunion, 97400 Saint-Denis de La Réunion, FranceLATMOS/IPSL, UVSQ Université Paris-Saclay, Sorbonne Université, CNRS, 75000 Paris, FranceLaboratoire de Physique et Chimie de l’Environnement et de l’Espace (LPC2E), Université d’Orléans, 45100 Orléans, FranceLaboratoire de l’Atmosphère et des Cyclones (LACy, UMR 8105 CNRS, Université de la Réunion, Météo-France), Université de La Réunion, 97400 Saint-Denis de La Réunion, FranceLaboratoire de l’Atmosphère et des Cyclones (LACy, UMR 8105 CNRS, Université de la Réunion, Météo-France), Université de La Réunion, 97400 Saint-Denis de La Réunion, FranceLaboratoire de l’Atmosphère et des Cyclones (LACy, UMR 8105 CNRS, Université de la Réunion, Météo-France), Université de La Réunion, 97400 Saint-Denis de La Réunion, FranceLaboratoire de Physique et Chimie de l’Environnement et de l’Espace (LPC2E), Université d’Orléans, 45100 Orléans, FranceLaboratoire de Physique et Chimie de l’Environnement et de l’Espace (LPC2E), Université d’Orléans, 45100 Orléans, FranceObservatoire des Sciences de l’Univers de La Réunion (OSU-Réunion), UAR 3365, Université de la Réunion, CNRS, Météo-France, 97400 Saint-Denis de La Réunion, FranceLATMOS/IPSL, UVSQ Université Paris-Saclay, Sorbonne Université, CNRS, 75000 Paris, FranceSpectroscopy, Quantum Chemistry and Atmospheric Remote Sensing (SQUARES), Université libre de Bruxelles (ULB), 1050 Brussels, BelgiumLATMOS/IPSL, UVSQ Université Paris-Saclay, Sorbonne Université, CNRS, 75000 Paris, FranceNational Institute of Water & Atmospheric Research (NIWA), Omakau 9377, New ZealandNational Institute of Water & Atmospheric Research (NIWA), Omakau 9377, New ZealandNational Institute of Water & Atmospheric Research (NIWA), Omakau 9377, New ZealandNational Institute of Water & Atmospheric Research (NIWA), Omakau 9377, New ZealandThe present study contributes to the scientific effort for a better understanding of the potential of the Australian biomass burning events to influence tropospheric trace gas abundances at the regional scale. In order to exclude the influence of the long-range transport of ozone precursors from biomass burning plumes originating from Southern America and Africa, the analysis of the Australian smoke plume has been driven over the period December 2019 to January 2020. This study uses satellite (IASI, MLS, MODIS, CALIOP) and ground-based (sun-photometer, FTIR, ozone radiosondes) observations. The highest values of aerosol optical depth (AOD) and carbon monoxide total columns are observed over Southern and Central Australia. Transport is responsible for the spatial and temporal distributions of aerosols and carbon monoxide over Australia, and also the transport of the smoke plume outside the continent. The dispersion of the tropospheric smoke plume over Oceania and Southern Pacific extends from tropical to extratropical latitudes. Ozone radiosonde measurements performed at Samoa (14.4°S, 170.6°W) and Lauder (45.0°S, 169.4°E) indicate an increase in mid-tropospheric ozone (6–9 km) (from 10% to 43%) linked to the Australian biomass burning plume. This increase in mid-tropospheric ozone induced by the transport of the smoke plume was found to be consistent with MLS observations over the tropical and extratropical latitudes. The smoke plume over the Southern Pacific was organized as a stretchable anticyclonic rolling which impacted the ozone variability in the tropical and subtropical upper-troposphere over Oceania. This is corroborated by the ozone profile measurements at Samoa which exhibit an enhanced ozone layer (29%) in the upper-troposphere. Our results suggest that the transport of Australian biomass burning plumes have significantly impacted the vertical distribution of ozone in the mid-troposphere southern tropical to extratropical latitudes during the 2019–20 extreme Australian bushfires.https://www.mdpi.com/2072-4292/13/16/3092tropospheric ozoneAustralian firescarbon monoxideplume transport |