Articles | Volume 22
https://doi.org/10.5194/asr-22-103-2025
https://doi.org/10.5194/asr-22-103-2025
15 Dec 2025
 | 15 Dec 2025

Response of the atmospheric boundary layer to SST variability in a coupled simulation in the Atlantic trades

Alessandro Storer, Matteo Borgnino, Agostino Niyonkuru Meroni, Fabien Desbiolles, Carlos Conejero, Lionel Renault, and Claudia Pasquero

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Cited articles

Acquistapace, C., Meroni, A. N., Labbri, G., Lange, D., Späth, F., Abbas, S., and Bellenger, H.: Fast atmospheric response to a cold oceanic mesoscale patch in the north-western tropical Atlantic, Journal of Geophysical Research: Atmospheres, 127, e2022JD036799, https://doi.org/10.1029/2022JD036799, 2022. a, b
Auclair, F., Benshila, R., Bordois, L., Boutet, M., Brémond, M., Caillaud, M., Cambon, G., Capet, X., Debreu, L., Ducousso, N., Dufois, F., Dumas, F., Ethé, C., Gula, J., Hourdin, C., Illig, S., Jullien, S., Le Corre, M., Le Gac, S., Le Gentil, S., Lemarié, F., Marchesiello, P., Mazoyer, C., Morvan, G., Nguyen, C., Penven, P., Person, R., Pianezze, J., Pous, S., Renault, L., Roblou, L., Sepulveda, A., and Theetten, S.: Coastal and regional ocean community model, Zenodo [software], https://doi.org/10.5281/zenodo.11036115, 2022. a
Bony, S. and Dufresne, J.-L.: Marine boundary layer clouds at the heart of tropical cloud feedback uncertainties in climate models, Geophysical Research Letters, 32, L20806, https://doi.org/10.1029/2005GL023851, 2005. a
Borgnino, M., Desbiolles, F., Meroni, A., and Pasquero, C.: Lower Tropospheric Response to Local Sea Surface Temperature Anomalies: A Numerical Study in the EUREC 4 EUREC^4 A Region, Geophysical Research Letters, 52, e2024GL112294, https://doi.org/10.1029/2024GL112294, 2025. a, b, c, d, e, f, g, h, i, j, k, l, m
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Short summary
We looked into how a numerical experiment represents the interactions between the air and the sea at scales of about 100–1000 km. We found that slight changes in sea surface temperature (SST) drive dramatic modifications in evaporation rates from the sea surface. Cold sea patches tend to cool down the air and to keep moisture trapped within the lower atmospheric layers. Warmer SST, instead, makes them more buoyant and inflate with drier air, thus diluting moisture over thicker air layers.
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