@article{fdi:010080054, title = {{E}xtratropical sources of equatorial {P}acific upwelling in an {OGCM}}, author = {{R}odgers, {K}.{B}. and {B}lanke, {B}. and {M}adec, {G}. and {A}umont, {O}livier and {C}iais, {P}. and {D}utay, {J}.{C}.}, editor = {}, language = {{ENG}}, abstract = {{T}he extratropical sources of equatorial undercurrent ({EUC}) water have been identified for an ocean circulation model using {L}agrangian trajectory analysis. {I}t has been found that the {EUC} waters emenate from a wide range of latitudes in the {P}acific basin, with its densest constituent watermass being {S}ubantarctic {M}ode {W}ater ({SAMW}) from 50degrees{S}. {F}urther analysis of the basin-scale circulation fields has revealed significant advective diapycnal mass fluxes associated with intergyre exchange. {A}s a result of these diapycnal mass fluxes, the {EUC} transport as a function of density at 151degrees{W} (an {E}ulerian diagnostic) looks quite different from the original subduction rate as a function of density for the same collection of water particles. {T}his implicates diapycnal vertical mixing as an important player in determining the preferred density horizon of maximum {EUC} transport along the equator. {I}n summary, these results illustrate an important interdependence between advective and diapycnal mixing processes associated with basin-scale inter-gyre and inter-basin exchange in determining the mean equatorial stratification and {EUC} structure.}, keywords = {{CIRCULATION} {OCEANIQUE} ; {UPWELLING} ; {MODELISATION} ; {PACIFIQUE} ; {ZONE} {EQUATORIALE}}, booktitle = {}, journal = {{G}eophysical {R}esearch {L}etters}, volume = {30}, numero = {2}, pages = {1084 [4 ]}, ISSN = {0094-8276}, year = {2003}, DOI = {10.1029/2002{GL}016003}, URL = {https://www.documentation.ird.fr/hor/fdi:010080054}, }