Articles | Volume 25, issue 13
https://doi.org/10.5194/acp-25-6957-2025
https://doi.org/10.5194/acp-25-6957-2025
Research article
 | 
08 Jul 2025
Research article |  | 08 Jul 2025

Analysis of ship emission effects on clouds over the southeastern Atlantic using geostationary satellite observations

Nikos Benas, Jan Fokke Meirink, Rob Roebeling, and Martin Stengel

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Cited articles

Albrecht, B. A.: Aerosols, Cloud Microphysics, and Fractional Cloudiness, Science, 245, 1227–1230, https://doi.org/10.1126/science.245.4923.1227, 1989. 
Andersen, H., Cermak, J., Douglas, A., Myers, T. A., Nowack, P., Stier, P., Wall, C. J., and Wilson Kemsley, S.: Sensitivities of cloud radiative effects to large-scale meteorology and aerosols from global observations, Atmos. Chem. Phys., 23, 10775–10794, https://doi.org/10.5194/acp-23-10775-2023, 2023. 
Benas, N.: nikosbenas/Clouds_over_SEA_shipping_corridor: ACP paper code, Zenodo [code], https://doi.org/10.5281/zenodo.15222065, 2025. 
Benas, N., Solodovnik, I., Stengel, M., Hüser, I., Karlsson, K.-G., Håkansson, N., Johansson, E., Eliasson, S., Schröder, M., Hollmann, R., and Meirink, J. F.: CLAAS-3: the third edition of the CM SAF cloud data record based on SEVIRI observations, Earth Syst. Sci. Data, 15, 5153–5170, https://doi.org/10.5194/essd-15-5153-2023, 2023. 
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Short summary
This study examines how ship emissions affect clouds over a shipping corridor in the southeastern Atlantic. Using satellite data from 2004 to 2023, we find that ship emissions increase the number of cloud droplets while reducing their size and slightly decrease cloud water content. Effects on seasonal and daily patterns vary based on regional factors. The impact of emissions weakened after stricter regulations were implemented in 2020.
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