Articles | Volume 24, issue 6
https://doi.org/10.5194/acp-24-3785-2024
https://doi.org/10.5194/acp-24-3785-2024
Measurement report
 | 
27 Mar 2024
Measurement report |  | 27 Mar 2024

Measurement report: Insights into the chemical composition and origin of molecular clusters and potential precursor molecules present in the free troposphere over the southern Indian Ocean: observations from the Maïdo Observatory (2150 m a.s.l., Réunion)

Romain Salignat, Matti Rissanen, Siddharth Iyer, Jean-Luc Baray, Pierre Tulet, Jean-Marc Metzger, Jérôme Brioude, Karine Sellegri, and Clémence Rose

Related authors

Comparison of two oxidation flow reactors for measuring aged aerosol from passenger car exhaust
Katariina Kylämäki, Milja Jäppi, Leïla Simon, Wojciech Honkisz, Petteri Marjanen, Laura Salo, Teemu Lepistö, Henna Lintusaari, Luis Barreira, Hannu Kuutti, Matti Rissanen, Piotr Bielaczyc, Hilkka Timonen, Päivi Aakko-Saksa, and Topi Rönkkö
EGUsphere, https://doi.org/10.5194/egusphere-2026-224,https://doi.org/10.5194/egusphere-2026-224, 2026
This preprint is open for discussion and under review for Atmospheric Measurement Techniques (AMT).
Short summary
Linking Seawater Biogeochemistry to the Chemical and Biological Signatures of Nascent Marine Aerosol
Evelyn Freney, Karine Sellegri, Therese Barthelmeß, Anja Engel, Darrel Baumgardner, and Dagen Hughes
EGUsphere, https://doi.org/10.5194/egusphere-2026-87,https://doi.org/10.5194/egusphere-2026-87, 2026
This preprint is open for discussion and under review for Biogeosciences (BG).
Short summary
Comparison of M10 and M20 Meteomodem radiosondes relative humidity measurements with ECMWF ERA5 above France: focus on the upper troposphere
Sidy Diarra, Nadège Montoux, Jean-Luc Baray, Philippe Keckhut, Jean-Charles Dupont, Antoine Farah, and Dunya Alraddawi
EGUsphere, https://doi.org/10.5194/egusphere-2026-482,https://doi.org/10.5194/egusphere-2026-482, 2026
This preprint is open for discussion and under review for Atmospheric Measurement Techniques (AMT).
Short summary
Tropical tropospheric ozone trends (1998 to 2023): new perspectives from SHADOZ, IAGOS and OMI/MLS observations
Anne M. Thompson, Ryan M. Stauffer, Debra E. Kollonige, Jerald R. Ziemke, Bryan J. Johnson, Gary A. Morris, Patrick Cullis, María Cazorla, Jorge Andres Diaz, Ankie Piters, Igor Nedeljkovic, Truus Warsodikromo, Francisco Raimundo Silva, E. Thomas Northam, Patrick Benjamin, Thumeka Mkololo, Tshidi Machinini, Christian Félix, Gonzague Romanens, Syprose Nyadida, Jérôme Brioude, Stéphanie Evan, Jean-Marc Metzger, Ambun Dindang, Yuzaimi B. Mahat, Mohan Kumar Sammathuria, Norazura Binti Zakaria, Ninong Komala, Shin-Ya Ogino, Nguyen Thi Quyen, Francis S. Mani, Miriama Vuiyasawa, David Nardini, Matthew Martinsen, Darryl T. Kuniyuki, Katrin Müller, Pawel Wolff, and Bastien Sauvage
Atmos. Chem. Phys., 25, 18475–18507, https://doi.org/10.5194/acp-25-18475-2025,https://doi.org/10.5194/acp-25-18475-2025, 2025
Short summary
Eulerian modelling of spotting using a coupled Fire-Atmosphere approach
Alberto Alonso-Pinar, Jean-Baptiste Filippi, Adrien Guyot, Nicholas McCarthy, Pierre Tulet, and Alexander Filkov
EGUsphere, https://doi.org/10.5194/egusphere-2025-4855,https://doi.org/10.5194/egusphere-2025-4855, 2025
This preprint is open for discussion and under review for Natural Hazards and Earth System Sciences (NHESS).
Short summary

Cited articles

Albrecht, B. A.: Aerosols, cloud microphysics, and fractional cloudiness, Science, 245, 1227–1230, 1989. 
Baccarini, A., Dommen, J., Lehtipalo, K., Henning, S., Modini, R. L., Gysel-Beer, M., Baltensperger, U., and Schmale, J.: Low-volatility vapors and new particle formation over the Southern Ocean during the Antarctic Circumnavigation Expedition, J. Geophys. Res.-Atmos., 126, e2021JD035126, https://doi.org/10.1029/2021JD035126, 2021. 
Baldy, S., Ancellet, G., Bessafi, M., Badr, A., and Lan San Luk, D.: Field observations of the vertical distribution of tropospheric ozone at the island of Reunion (southern tropics), J. Geophys. Res., 101, 23835–23849, 1996. 
Download
Short summary
Using mass spectrometry data collected at the Maïdo Observatory (2160 m a.s.l., Réunion), we provide the first detailed analysis of  molecular cluster chemical composition specifically in the marine free troposphere. The abundance of the identified species is related both to in situ meteorological parameters and air mass history, which also provide insight into their origin. Our work makes an important contribution to documenting the chemistry and physics of the marine free troposphere.
Share
Altmetrics
Final-revised paper
Preprint