@article{fdi:010082742,
  title = {{C}auses of the {N}orthern {G}ulf of {G}uinea cold event in 2012},
  author = {{D}a-{A}llada, {C}. {Y}. and {A}gada, {J}. and {B}aloitcha, {E}. and {H}ounkonnou, {M}. {N}. and {J}ouanno, {J}ulien and {A}lory, {G}.},
  editor = {},
  language = {{ENG}},
  abstract = {{P}articularly cool sea surface temperatures ({SST}s) were observed in 2012 along the {N}orthern {G}ulf of {G}uinea coast. {T}his strong cooling event was seen from {F}ebruary to {J}une and reached maxima in the coastal upwelling areas: {SST} anomalies of -1 degrees {C} were observed in {S}assandra {U}pwelling area in {C}ote d'{I}voire ({SUC}, situated east of {C}ape {P}almas) and {SST} anomalies of -0.5 degrees {C} were observed in {T}akoradi {U}pwelling area in {G}hana ({TUG}, located east of {C}ape {T}hree {P}oints). {I}n {SUC} and {TUG} regions, the 2012 decrease in {SST} was the coldest event recorded over the 1990-2018 period (29 years). {F}rom the analysis of regional simulations, we show that the mechanisms behind this {SST} decrease differ in the two regions. {I}n the {SUC} region, we identify changes in both zonal advection (related to zonal {SST} gradient changes) and increased vertical mixing as the main drivers of the anomalous cooling. {T}he anomalous vertical mixing is linked to increased vertical shear of the zonal current in response to the {G}uinea {C}urrent strengthening. {I}n the {TUG} region, acceleration of the southward advection of the surface water, due to the intensification of the meridional {E}kman current generated by the strengthening of the zonal wind stress, was identified as the major cause of the {SST} anomalous cooling.},
  keywords = {{N}orthern {G}ulf of {G}uinea ; interannual variability ; sea surface ; temperature anomalies ; model ; observation ; vertical mixing ; zonal and meridional advection ; {ATLANTIQUE} ; {COTE} {D}'{IVOIRE} ; {GHANA} ; {ZONE} {EQUATORIALE} ; {GUINEE} {GOLFE}},
  booktitle = {},
  journal = {{J}ournal of {G}eophysical {R}esearch : {O}ceans},
  volume = {126},
  numero = {8},
  pages = {e2021{JC}017627 [16 p.]},
  ISSN = {2169-9275},
  year = {2021},
  DOI = {10.1029/2021jc017627},
  URL = {https://www.documentation.ird.fr/hor/fdi:010082742},
}