Garçon V.C. auteur aut IRD Martinon L. auteur aut IRD Andrié Chantal auteur aut IRD Andrich P. auteur aut IRD Minster J.F. auteur aut IRD text journalArticle eng text/pdf reformatted digital access CO2 evasion within the Atlantic equatorial belt (5°N-5°S) increases from the East to the West (Andrié et al., 1986). Many factors contribute the variations of pCO2 in the equatorial surface waters. To assess their relative importance, a kinematic box model is developed. A 2° x 2° box whose depth is defined by the 24.90 °/°° isopcynal level flows westward from 4°W to 38°W within the Equator-2°S band with the south equatorial current. Time (zonal) evolution of nitrate, total CO2, total alkalinity and mass, and of the corresponding water pCO2, are simulated taking into account advection, meridional divergence, diffusion, biological activity and gas exchange. Initial and boundary conditions are taken from the FOCAL 4 (July-August 1983) data set specialized GAZ CARBONIQUE SURFACE MARINE COURANT EQUATORIAL MODELE ATLANTIQUE 032MILPHY 94 C1 855-869 1989 0148-0227 https://www.documentation.ird.fr/hor/fdi:27590 0148-0227 [F B27590] https://www.documentation.ird.fr/hor/fdi:27590 https://horizon.documentation.ird.fr/exl-doc/pleins_textes/pleins_textes_5/b_fdi_20-21/27590.pdf IRD - Base Horizon / Pleins textes 1990-03-09 2006-05-30 fdi:27590 fre