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| Da-allada, Casimir Yelognisse; Gaillard, Fabienne; Kolodziejczyk, Nicolas. |
| The mixed-layer salinity (MLS) budget in the tropical Indian Ocean is estimated from a combination of satellite products and in situ observations over the 2004-2012 period, to investigate the mechanisms controlling the seasonal MLS variability. In contrast with previous studies in the tropical Indian Ocean, our results reveal that the coverage, resolution, and quality of available observations are now sufficient to approach a closed monthly climatology seasonal salt budget. In the South-central Arabian Sea and South-western Tropical Indian Ocean (SCAS and STIO, respectively), where seasonal variability of the MLS is pronounced, the monthly MLS tendency terms are well captured by the diagnostic. In the SCAS region, in agreement with previous results, the... |
| Tipo: Text |
Palavras-chave: Tropical Indian Ocean; Observations; Seasonal cycle; Mixed-layer salinity; Mixed-layer budget. |
| Ano: 2015 |
URL: http://archimer.ifremer.fr/doc/00270/38129/36311.pdf |
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| Awo, F. M.; Alory, G.; Da-allada, Casimir Yelognisse; Delcroix, T.; Jouanno, J.; Kestenare, E.; Baloitcha, E.. |
| The characteristic sea surface salinity (SSS) patterns associated with the tropical Atlantic meridional and equatorial interannual modes are extracted from in situ observations, by a statistical analysis performed on the 1980–2012 period. These SSS signatures of the interannual climatic modes are reproduced in a regional numerical simulation. For each mode, oceanic and/or atmospheric processes driving the SSS signature are identified through a mixed‐layer salt budget in the validated model. During a positive meridional mode in spring, a northward shift of the Intertropical Convergence Zone and related precipitation maximum creates a south‐north dipole of positive‐negative SSS anomalies around the equator. Western boundary currents strengthen and advect... |
| Tipo: Text |
Palavras-chave: Sea surface salinity; Tropical Atlantic; Interannual climatic modes. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00463/57517/59694.pdf |
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