Articles | Volume 21, issue 22
Atmos. Chem. Phys., 21, 17017–17029, 2021
https://doi.org/10.5194/acp-21-17017-2021
Atmos. Chem. Phys., 21, 17017–17029, 2021
https://doi.org/10.5194/acp-21-17017-2021
Research article
24 Nov 2021
Research article | 24 Nov 2021

Origin of water-soluble organic aerosols at the Maïdo high-altitude observatory, Réunion Island, in the tropical Indian Ocean

Sharmine Akter Simu et al.

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Cited articles

Brüggemann, M., Hayeck, N., and George, C.: Interfacial photochemistry at the ocean surface is a global source of organic vapors and aerosols, Nat. Commun., 9, 1–8, https://doi.org/10.1038/s41467-018-04528-7, 2018. 
Cachier, H., Buat-Menard, P., Fontugne, M., and Chesselet, R.: Long-range transport of continentally-derived particulate carbon in the marine atmosphere: Evidence from stable carbon isotope studies, Tellus B, 38, 161–177, https://doi.org/10.3402/tellusb.v38i3-4.15125, 1986. 
Chylek, P., Dubey, M. K., Lohmann, U., Ramanathan, V., Kaufman, Y. J., Lesins, G., Hudson, J., Altmann, G., and Olsen, S.: Aerosol indirect effect over the Indian Ocean, Geophys. Res. Lett., 33, 2–5, https://doi.org/10.1029/2005GL025397, 2006. 
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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.
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