Summary
The zonal Qλ and meridional QФ water vapor flux components, from 1972 to 1975 period, using 9.348 radiossonde data are presented: there is a zonal water vapor flux evidence over the Amazonas basin. The mean Qλ values over Belém and Manaus were 2,895 and 2,203g/cm.s, respectively, in a 1000/500mb layer.