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Our study was realized from the thermodynamics and dynamics parameters obtained
from the radiosondes at Ouesso station (northern Congo). In the tour of 100
hPa, at the top of the troposphere of the cuttings they are observed with East
winds and Northeast, are responsible for the appearance of a two tropopauses;
this phenomenon remains however short-lived. Until approximately 300 hPa, the
decrease of the temperature is weak with a temperature and pressure gradient
superior to 5°C km-1, which prove that the equatorial atmosphere
remains relatively warm even in height; the humidity of this atmosphere remains
high, superior to 60% up to 600 hPa.