@article{fdi:010078985, title = {{S}easonal and inter-annual {ONSET} {S}ea {S}urface {T}emperature variability along the northern coast of the {G}ulf of {G}uinea}, author = {{S}ohou, {Z}. and {K}one, {V}. and {D}a-{A}llada, {Y}. {C}. and {D}jakoure, {S}. and {B}ourl{\`e}s, {B}ernard and {R}acape, {V}. and {D}egbe, {G}. and {A}dje, {C}.}, editor = {}, language = {{ENG}}, abstract = {{T}he aim of this study is to characterize the coastal upwelling variability at seasonal and inter-annual time scales in the northern {G}ulf of {G}uinea ({NG}o{G}) using {S}ea {S}urface {T}emperature ({SST}) collected with autonomous "{ONSET}" thermometers. {R}esults show that the {ONSET} {SST} data are suitable for numerical model evaluation, and provide relevant information in addition to satellite and reanalysis data at seasonal cycle. {T}he minor and major coastal upwellings are present in all the products. {T}he interannual {SST} variability is more pronounced in the western part of the region ({C}ote d'{I}voire and {G}hana) than in the eastern part ({B}enin and {N}igeria). {T}he pattern differences between the west and the east of the region highlight a large spatial variability of the {SST} in the {NG}o{G}. {I}ndeed, the signal of the minor upwelling season is visible only in the west of the basin, namely between {C}ape {P}almas and {C}ape {T}hree {P}oints. {W}e also observe a well-established thermal gradient between the western and eastern parts of the basin. {T}his gradient is increasing from west to east during the major upwelling season, and decreasing from east to west during the rest of the year. {T}he coastal {ONSET} data allow to evidence higher {SST} anomalies than those deduced from satellite and reanalysis products. {A}lthough the cold or warm events observed in 2008, 2010 and 2012 are well detected by all products, only the {ONSET} data set reveal the strong negative {SST} anomaly observed in 2009 along the coast of {G}hana and {C}ote d'{I}voire.}, keywords = {{S}ea {S}urface {T}emperature ; {ONSET} data ; {G}ulf of {G}uinea ; {C}oastal upwelling ; {S}easonal variability ; {I}nter-annual variability ; {ATLANTIQUE} ; {GUINEE} {GOLFE} ; {NIGERIA} ; {BENIN} ; {GHANA} ; {COTE} {D}’{IVOIRE}}, booktitle = {}, journal = {{R}egional {S}tudies in {M}arine {S}cience}, volume = {35}, numero = {}, pages = {art. 101129 [11 p.]}, ISSN = {2352-4855}, year = {2020}, DOI = {10.1016/j.rsma.2020.101129}, URL = {https://www.documentation.ird.fr/hor/fdi:010078985}, }