Inter?annual variability of the along?shore Lagrangian transport success in the southern Benguela Current upwelling system
نویسندگان
چکیده
A 3-km resolution regional ocean model is used to investigate the role of wind-driven coastal circulation and mesoscale variability on inter-annual transport success in southern Benguela between Cape Point (34°S) St Helena Bay (32°S) from 1992 2011. Lagrangian particles are released within top 100 m water column along an across-shore transect off Point. Transport given by ratio number that reach over total released. The analysis anomalies their relationship with local wind forcing reveal there no single driver variability. shelf (depths <300 m) mainly depends capacity remain embedded Jet. Nevertheless, peaks offshore Ekman episodic occurrence a poleward inner-shelf counter-current contribute negative anomalies. For outer edge >500 m), transports induced eddies main contributors Rare passage Agulhas rings near can induce strong advection into open ocean. In contrast, shelf-edge cyclonic favor onshore originating thus increasing success.
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ژورنال
عنوان ژورنال: Journal Of Geophysical Research: Oceans
سال: 2022
ISSN: ['2169-9275', '2169-9291']
DOI: https://doi.org/10.1029/2020jc017114