@article{fdi:010052952,
  title = {{C}oastal oceanic climate change and variability from 1982 to 2009 around {S}outh {A}frica},
  author = {{R}ouault, {M}. and {P}ohl, {B}. and {P}enven, {P}ierrick},
  editor = {},
  language = {{ENG}},
  abstract = {{C}hanges and fluctuations in sea surface temperature ({SST}) around the {S}outh {A}frican coast are analysed at a monthly scale from 1982 to 2009. {T}here is a statistically significant negative trend of up to 0.5 degrees {C} per decade in the southern {B}enguela from {J}anuary to {A}ugust, and a cooling trend of lesser magnitude along the {S}outh {C}oast and in the {P}ort {E}lizabeth/{P}ort {A}lfred region from {M}ay to {A}ugust. {T}he cooling is due to an increase in upwelling-favourable south-easterly and easterly winds. {T}here is a positive trend in {SST} of up to 0.55 degrees {C} per decade in most parts of the {A}gulhas {C}urrent system during all months of the year, except for {K}wa{Z}ulu-{N}atal where warming is in summer. {T}he warming was attributed to an intensification of the {A}gulhas {C}urrent in response to a poleward shift of westerly winds and an increase in trade winds in the {S}outh {I}ndian {O}cean at relevant latitudes. {T}his intensification of the {A}gulhas {C}urrent could also have contributed to the coastal cooling in the {P}ort {A}lfred dynamic upwelling region. {T}he {E}l {N}ino {S}outhern {O}scillation ({ENSO}) is significantly positively correlated at a 95% level with the southern {B}enguela and {S}outh {C}oast from {F}ebruary to {M}ay, and negatively correlated with the {A}gulhas {C}urrent system south of 36 degrees {S}. {T}he correlation with the {A}ntarctic {A}nnular {O}scillation is weaker and less coherent. {E}l {N}ino suppresses upwelling along the coast, whereas {L}a {N}ina increases it. {A}lthough there does not seem to be a linear relationship between the strength of the {ENSO} and the magnitude of coastal {SST} perturbation, {E}l {N}ino and {L}a {N}ina appear to be linked to major warm and cool events, respectively, at a seasonal scale in summer in the southern {B}enguela and along the {S}outh {C}oast. {H}owever, care must be taken in interpreting low-resolution reanalysed climate data ({ERA}40 and {NCEP}) and optimally interpolated {R}eynolds {SST}, such as used here.},
  keywords = {{A}gulhas {C}urrent ; {B}enguela upwelling ; climate change ; {ENSO} ; {S}outhern ; {A}nnular {M}ode ; {OCEAN} {INDIEN} ; {AGULHAS} {COURANT} ; {BENGUELA} {COURANT}},
  booktitle = {},
  journal = {{A}frican {J}ournal of {M}arine {S}cience},
  volume = {32},
  numero = {2},
  pages = {237--246},
  ISSN = {1814-232{X}},
  year = {2010},
  DOI = {10.2989/1814232x.2010.501563},
  URL = {https://www.documentation.ird.fr/hor/fdi:010052952},
}