Origin, size distribution, and hygroscopic properties of marine aerosols in the southwestern Indian Ocean: results of six campaigns of shipborne observations
LACy, Laboratoire de l'Atmosphère et des Cyclones (UMR 8105 CNRS, Université de la Réunion, Météo-France), Saint-Denis de la Réunion, France
Jean-Marc Metzger
OSU-R, Observatoire des Sciences de l'Univers de La Réunion (UAR 3365, CNRS, Université de la Réunion, Météo-France), Saint-Denis de la Réunion, France
Melilotus Thyssen
MIO, Institut Méditerranéen d'Océanologie (UMR 235 Aix Marseille Univ, Université de Toulon, CNRS, IRD), Marseille, France
Gilles Athier
LAERO, Laboratoire d'Aérologie (UMR 5560 CNRS, UT3, IRD), Toulouse, France
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Aerosol measurements collected during six oceanographic campaigns carried out in 2021 and 2023 in the southwestern Indian Ocean are presented and analyzed in this paper. The results highlight large variability in the aerosol concentration, size, and water vapor affinity depending on in situ conditions and air mass transport over the ocean. Marine aerosol chemical composition is highly variable over this region and should be considered to better study the impacts of aerosols on regional weather and climate.
Aerosol measurements collected during six oceanographic campaigns carried out in 2021 and 2023...