Simulación de la concentración de SO2 emitido por fuentes fijas mayores durante 2003 en el noroeste de Chiapas y centro de Tabasco, México

the calpuff dispersion model was used to simulate the spatial distribution of the so2 emitted by petróleos mexicanos' (pemex) gas-processing complexes in cactus, nw chiapas, nuevo pemex and ciudad pemex, in central tabasco, during 2003. it was found that the zone with the highest concentrations of so2 is located sw from the pemex facilities. the zone, where the world health organization's norm for so2 is surpassed (20 μg/m3), includes the city of reforma, chiapas and ciudad pemex, tabasco.