Seasonal Variability of Sea Surface Salinity in the NW Gulf of Guinea from SMAP Satellite

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dc.contributor.authorNyadjro, E.S.
dc.contributor.authorFoli, B.A.K.
dc.contributor.authorAgyekum, K.A.
dc.contributor.authoret al.
dc.date.accessioned2024-08-22T08:49:17Z
dc.date.available2024-08-22T08:49:17Z
dc.date.issued2022
dc.descriptionResearch Articleen_US
dc.description.abstractThe advent of satellite-derived sea surface salinity (SSS) measurements has boosted scientific study in less-sampled ocean regions such as the northwestern Gulf of Guinea (NWGoG). In this study, we examine the seasonal variability of SSS in the NWGoG from the Soil Moisture Active Passive (SMAP) satellite and show that it is well-suited for such regional studies as it is able to reproduce the observed SSS features in the study region. SMAP SSS bias, relative to in-situ data comparisons reflects the differences between skin layer measurements and bulk-surface measurements that have been reported by previous studies. The study results reveal three broad anomalous SSS features: a basin-wide salinification during boreal summer, a basin-wide freshening during winter and a meridionally-oriented frontal system during other seasons. A salt budget estimation suggests that seasonal SSS variability is dominated by changes in freshwater flux, zonal circulation and upwelling. Freshwater flux, primarily driven by the seasonally varying Intertropical Convergence Zone is a dominant contributor to salt budget in all seasons except during fall. Regionally, SSS is most variable off southwestern Nigeria and controlled primarily by westward extensions of the Niger River. Anomalous salty SSS off the coasts of Cote d’Ivoire and Ghana, especially during the summer, is driven mainly by coastal upwelling and horizontal advection.en_US
dc.identifier.otherDOI:10.1007/s41976-021-00061-2
dc.identifier.urihttps://ugspace.ug.edu.gh/handle/123456789/42353
dc.language.isoenen_US
dc.publisherRemote Sensing in Earth Systems Sciencesen_US
dc.subjectGulf of Guineaen_US
dc.subjectSea Surface Salinityen_US
dc.subjectUpwellingen_US
dc.titleSeasonal Variability of Sea Surface Salinity in the NW Gulf of Guinea from SMAP Satelliteen_US
dc.typeArticleen_US

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