Articles | Volume 24, issue 13
https://doi.org/10.5194/acp-24-8031-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-24-8031-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
16 Jul 2024
Research article |
| 16 Jul 2024
| 16 Jul 2024
Evidence of a dual African and Australian biomass burning influence on the vertical distribution of aerosol and carbon monoxide over the southwest Indian Ocean basin in early 2020
Nelson Bègue
CORRESPONDING AUTHOR
Laboratoire de l'Atmosphère et des Cyclones, UMR 8105 CNRS, Université de la Réunion, Météo-France, Réunion Island, France
Alexandre Baron
Cooperative Institute for Research in Environmental Sciences (CIRES), University of Colorado, Boulder, CO 80305, USA
NOAA Chemical Sciences Laboratory (CSL), 325 Broadway, Boulder, CO 80305, USA
Gisèle Krysztofiak
Laboratoire de Physique et Chimie de l'Environnement et de l'Espace (LPC2E), Université d'Orléans, CNRS UMR7328, CNES, Orléans, France
Gwenaël Berthet
Laboratoire de Physique et Chimie de l'Environnement et de l'Espace (LPC2E), Université d'Orléans, CNRS UMR7328, CNES, Orléans, France
Corinna Kloss
Laboratoire de Physique et Chimie de l'Environnement et de l'Espace (LPC2E), Université d'Orléans, CNRS UMR7328, CNES, Orléans, France
now at: Institute for Energy and Climate Research – Stratosphere (IEK-7), Forschungszentrum Jülich, Jülich, Germany
Fabrice Jégou
Laboratoire de Physique et Chimie de l'Environnement et de l'Espace (LPC2E), Université d'Orléans, CNRS UMR7328, CNES, Orléans, France
Sergey Khaykin
Laboratoire Atmosphères, Observations Spatiales (LATMOS), IPSL, UVSQ Université Paris-Saclay, Sorbonne Université, CNRS, Guyancourt, France
Marion Ranaivombola
Laboratoire de l'Atmosphère et des Cyclones, UMR 8105 CNRS, Université de la Réunion, Météo-France, Réunion Island, France
Tristan Millet
Laboratoire de l'Atmosphère et des Cyclones, UMR 8105 CNRS, Université de la Réunion, Météo-France, Réunion Island, France
Thierry Portafaix
Laboratoire de l'Atmosphère et des Cyclones, UMR 8105 CNRS, Université de la Réunion, Météo-France, Réunion Island, France
Valentin Duflot
Laboratoire de l'Atmosphère et des Cyclones, UMR 8105 CNRS, Université de la Réunion, Météo-France, Réunion Island, France
now at: Department for Atmospheric and Climate Research, NILU – Norwegian Institute for Air Research, Kjeller, Norway
Philippe Keckhut
Laboratoire Atmosphères, Observations Spatiales (LATMOS), IPSL, UVSQ Université Paris-Saclay, Sorbonne Université, CNRS, Guyancourt, France
Hélène Vérèmes
Laboratoire de l'Atmosphère et des Cyclones, UMR 8105 CNRS, Université de la Réunion, Météo-France, Réunion Island, France
Guillaume Payen
Observatoire des Sciences de l'Univers de La Réunion (OSU-Réunion), UAR3365, Saint-Denis de la Réunion, France
Mahesh Kumar Sha
Royal Belgian Institute for Space Aeronomy (BIRA-IASB), Brussels, Belgium
Pierre-François Coheur
Université libre de Bruxelles (ULB), Spectroscopy, Quantum Chemistry and Atmospheric Remote Sensing (SQUARES), 1050 Brussels, Belgium
Cathy Clerbaux
Université libre de Bruxelles (ULB), Spectroscopy, Quantum Chemistry and Atmospheric Remote Sensing (SQUARES), 1050 Brussels, Belgium
LATMOS/IPSL, Sorbonne Université, UVSQ, CNRS, Paris, France
Michaël Sicard
Laboratoire de l'Atmosphère et des Cyclones, UMR 8105 CNRS, Université de la Réunion, Météo-France, Réunion Island, France
Tetsu Sakai
Meteorological Research Institute, 1-1 Nagamine, Tsukuba, Ibaraki 305-0052, Japan
Richard Querel
National Institute of Water and Atmospheric Research (NIWA), Lauder, New Zealand
Ben Liley
National Institute of Water and Atmospheric Research (NIWA), Lauder, New Zealand
Dan Smale
National Institute of Water and Atmospheric Research (NIWA), Lauder, New Zealand
Isamu Morino
National Institute for Environmental Studies, Tsukuba, Japan
Osamu Uchino
Meteorological Research Institute, 1-1 Nagamine, Tsukuba, Ibaraki 305-0052, Japan
National Institute for Environmental Studies, Tsukuba, Japan
Tomohiro Nagai
Meteorological Research Institute, 1-1 Nagamine, Tsukuba, Ibaraki 305-0052, Japan
Penny Smale
National Institute of Water and Atmospheric Research (NIWA), Lauder, New Zealand
John Robinson
National Institute of Water and Atmospheric Research (NIWA), Lauder, New Zealand
Hassan Bencherif
Laboratoire de l'Atmosphère et des Cyclones, UMR 8105 CNRS, Université de la Réunion, Météo-France, Réunion Island, France
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Latest update: 16 Jul 2024
Short summary
During the 2020 austral summer, the pristine atmosphere of the southwest Indian Ocean basin experienced significant perturbations. Numerical models indicated that the lower-stratospheric aerosol content was influenced by the intense and persistent stratospheric aerosol layer generated during the 2019–2020 extreme Australian bushfire events. Ground-based observations at Réunion confirmed the simultaneous presence of African and Australian aerosol layers.
During the 2020 austral summer, the pristine atmosphere of the southwest Indian Ocean basin...
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