Simulation of spatiotemporal interannual variability of oceanic subsurface temperature off East Africa

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dc.contributor.authorManyilizu, Majuto C.
dc.date.accessioned2023-05-23T13:05:46Z
dc.date.available2023-05-23T13:05:46Z
dc.date.issued2023
dc.descriptionFull Text Article. Also available at https://www.ajol.info/index.php/wiojms/article/view/220816en_US
dc.description.abstractThe oceanic subsurface variability off East Africa in the tropical western Indian Ocean plays a crucial role in ocean dynamics and living resources as well as weather and climate variability. A regional ocean model is applied to understand the oceanic subsurface interannual variability off East Africa. The region with the highest sea surface temperature (SST) variability in the offshore region lies adjacent to strong subsurface temperature variations located between 30 and 130 m corresponding with strong variations in the thermocline depth. The weakest SST variations in the Tanzanian shelf waters lie over the subsurface waters with the smallest temperature variations in the upper 200 m with weak variations in the thermocline depth. Such signals are associated with induced forcings from the Indian Ocean Dipole (IOD) and El Niño-Southern Oscillation (ENSO) in both regions with different intensity and peaking times. The IOD-induced forcings are weaker, evolving in October and November-December in the region with the weakest and strongest SST variations, respectively. Relatively stronger ENSO induced forcings occur in both regions. Stronger signals occur in the region with the stongest SST variations throughout the year, except in August, with a peak in January. The ENSO-induced forcings occur in January to May peaking in March and April in the region with the weakest SST. Consequently, anomalous Rossby waves as well as local Ekman downwelling and upwelling associated with both large-scale modes occur in the region leading to the subsurface temperature variations.en_US
dc.identifier.citationManyilizu, M. C. (2022). Simulation of spatiotemporal interannual variability of oceanic subsurface temperature off East Africa. Western Indian Ocean Journal of Marine Science, 21(2), 57-70.en_US
dc.identifier.otherURL: https://www.ajol.info/index.php/wiojms/article/view/220816
dc.identifier.urihttp://hdl.handle.net/20.500.12661/3868
dc.language.isoenen_US
dc.publisherAfrican Journals Onlineen_US
dc.subjectThermoclineen_US
dc.subjectOceanic subsurface temperatureen_US
dc.subjectIndian Ocean Dipoleen_US
dc.subjectUpwellingen_US
dc.subjectDownwellingen_US
dc.subjectEast Africaen_US
dc.subjectOceanic subsurface variabilityen_US
dc.subjectSea surface temperatureen_US
dc.subjectSSTen_US
dc.subjectEl Niño-Southern Oscillationen_US
dc.subjectENSOen_US
dc.subjectOcean dynamicsen_US
dc.subjectLiving resourcesen_US
dc.titleSimulation of spatiotemporal interannual variability of oceanic subsurface temperature off East Africaen_US
dc.typeArticleen_US
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