@article{fdi:010070335,
  title = {{D}ynamics of a "low-enrichment high-retention" upwelling center over the southern {S}enegal shelf},
  author = {{N}doye, {S}. and {C}apet, {X}. and {E}strade, {P}. and {S}ow, {B}. and {M}achu, {E}ric and {B}rochier, {T}imoth{\'e}e and {D}oring, {J}. and {B}rehmer, {P}atrice},
  editor = {},
  language = {{ENG}},
  abstract = {{S}enegal is the southern tip of the {C}anary upwelling system. {I}ts coastal ocean hosts an upwelling center which shapes sea surface temperatures between latitudes 12 degrees and 15 degrees {N}. {N}ear this latter latitude, the {C}ape {V}erde headland and a sudden change in shelf cross-shore profile are major sources of heterogeneity in the southern {S}enegal upwelling sector ({SSUS}). {SSUS} dynamics is investigated by means of {R}egional {O}cean {M}odeling {S}ystem simulations. {C}onfiguration realism and resolution (triangle x approximate to 2 km) are sufficient to reproduce the {SSUS} frontal system. {O}ur main focus is on the 3-{D} upwelling circulation which turns out to be profoundly different from 2-{D} theory: cold water injection onto the shelf and upwelling are strongly concentrated within a few tens of kilometers south of {C}ape {V}erde and largely arise from flow divergence in the alongshore direction; a significant fraction of the upwelled waters are retained nearshore over long distances while travelling southward under the influence of northerly winds. {A}nother source of complexity, regional-scale alongshore pressure gradients, also contributes to the overall retention of upwelled waters over the shelf. {V}arying the degree of realism of atmospheric and oceanic forcings does not appreciably change these conclusions. {T}his study sheds light on the dynamics and circulation underlying the recurrent sea surface temperature pattern observed during the upwelling season and offers new perspectives on the connections between the {SSUS} physical environment and its ecosystems. {I}t also casts doubt on the validity of upwelling intensity estimations based on simple {E}kman upwelling indices at such local scales.},
  keywords = {{SENEGAL} ; {ATLANTIQUE}},
  booktitle = {},
  journal = {{G}eophysical {R}esearch {L}etters},
  volume = {44},
  numero = {10},
  pages = {5034--5043},
  ISSN = {0094-8276},
  year = {2017},
  DOI = {10.1002/2017gl072789},
  URL = {https://www.documentation.ird.fr/hor/fdi:010070335},
}