Articles | Volume 21, issue 22 
            
                
                    
            
            
            https://doi.org/10.5194/acp-21-17017-2021
                    © Author(s) 2021. 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-21-17017-2021
                    © Author(s) 2021. This work is distributed under 
the Creative Commons Attribution 4.0 License.
                the Creative Commons Attribution 4.0 License.
Origin of water-soluble organic aerosols at the Maïdo high-altitude observatory, Réunion Island, in the tropical Indian Ocean
Sharmine Akter Simu
                                            Graduate School of Environmental Science, Hokkaido University,
Sapporo, 0600810, Japan
                                        
                                    
                                            Institute of Low Temperature Science, Hokkaido University, Sapporo,
0600819, Japan
                                        
                                    
                                            Institute of Low Temperature Science, Hokkaido University, Sapporo,
0600819, Japan
                                        
                                    Eri Tachibana
                                            Institute of Low Temperature Science, Hokkaido University, Sapporo,
0600819, Japan
                                        
                                    Henning Finkenzeller
                                            Department of Chemistry, University of Colorado Boulder, Boulder, CO
80309-0215, USA
                                        
                                    
                                            Cooperative Institute for Research in Environmental Sciences (CIRES),
University of Colorado Boulder, Boulder, CO, USA
                                        
                                    Jérôme Brioude
                                            Laboratoire de l'Atmosphère et des Cyclones, UMR8105, CNRS,
Université de La Réunion, 97744 Saint-Denis, France
                                        
                                    Aurélie Colomb
                                            Laboratoire de Météorologie Physique, UMR6016, CNRS,
Université Clermont Auvergne, 63178 Aubière, France
                                        
                                    Olivier Magand
                                            Univ. Grenoble Alpes, CNRS, IRD, Grenoble INP, IGE, 38000 Grenoble,
France
                                        
                                    Bert Verreyken
                                            Laboratoire de l'Atmosphère et des Cyclones, UMR8105, CNRS,
Université de La Réunion, 97744 Saint-Denis, France
                                        
                                    
                                            Royal Belgian Institute for Space Aeronomy, 1180 Brussels, Belgium
                                        
                                    
                                            Department of Chemistry, Ghent University, 9000 Ghent, Belgium
                                        
                                    Stephanie Evan
                                            Laboratoire de l'Atmosphère et des Cyclones, UMR8105, CNRS,
Université de La Réunion, 97744 Saint-Denis, France
                                        
                                    Rainer Volkamer
                                            Department of Chemistry, University of Colorado Boulder, Boulder, CO
80309-0215, USA
                                        
                                    
                                            Cooperative Institute for Research in Environmental Sciences (CIRES),
University of Colorado Boulder, Boulder, CO, USA
                                        
                                    Trissevgeni Stavrakou
                                            Royal Belgian Institute for Space Aeronomy, 1180 Brussels, Belgium
                                        
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                            Cited
7 citations as recorded by crossref.
- A competition–species model for water vapour-aerosol-cloud-rain interactions F. Mascaut et al. 10.1016/j.atmosres.2022.106588
- A review on air–sea exchange of reactive trace gases over the northern Indian Ocean M. Gupta et al. 10.1007/s12040-024-02268-5
- A Competition–Species Model for Water Vapour-Aerosol-Cloud-Rain Interactions F. Mascaut et al. 10.2139/ssrn.4197632
- Evaluation of the Sources, Precursors, and Processing of Aerosols at a High-Altitude Tropical Site P. Dominutti et al. 10.1021/acsearthspacechem.2c00149
- Measurement report: Bio-physicochemistry of tropical clouds at Maïdo (Réunion, Indian Ocean): overview of results from the BIO-MAÏDO campaign M. Leriche et al. 10.5194/acp-24-4129-2024
- Revealing the composition and optical properties of marine carbonaceous aerosols: A case of the eastern China marginal seas K. Hu et al. 10.1016/j.scitotenv.2024.178136
- Observed in-plume gaseous elemental mercury depletion suggests significant mercury scavenging by volcanic aerosols A. Koenig et al. 10.1039/D3EA00063J
7 citations as recorded by crossref.
- A competition–species model for water vapour-aerosol-cloud-rain interactions F. Mascaut et al. 10.1016/j.atmosres.2022.106588
- A review on air–sea exchange of reactive trace gases over the northern Indian Ocean M. Gupta et al. 10.1007/s12040-024-02268-5
- A Competition–Species Model for Water Vapour-Aerosol-Cloud-Rain Interactions F. Mascaut et al. 10.2139/ssrn.4197632
- Evaluation of the Sources, Precursors, and Processing of Aerosols at a High-Altitude Tropical Site P. Dominutti et al. 10.1021/acsearthspacechem.2c00149
- Measurement report: Bio-physicochemistry of tropical clouds at Maïdo (Réunion, Indian Ocean): overview of results from the BIO-MAÏDO campaign M. Leriche et al. 10.5194/acp-24-4129-2024
- Revealing the composition and optical properties of marine carbonaceous aerosols: A case of the eastern China marginal seas K. Hu et al. 10.1016/j.scitotenv.2024.178136
- Observed in-plume gaseous elemental mercury depletion suggests significant mercury scavenging by volcanic aerosols A. Koenig et al. 10.1039/D3EA00063J
Latest update: 30 Oct 2025
Short summary
                    The tropical Indian Ocean (IO) is expected to be a significant source of water-soluble organic carbon (WSOC), which is relevant to cloud formation. Our study showed that marine secondary organic formation dominantly contributed to the aerosol WSOC mass at the high-altitude observatory in the southwest IO in the wet season in both marine boundary layer and free troposphere (FT). This suggests that the effect of marine secondary sources is important up to FT, a process missing in climate models.
                    The tropical Indian Ocean (IO) is expected to be a significant source of water-soluble organic...
                    
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