Zenital precipitation

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Zenital precipitation is convective precipitation in the intertropical convergence zone (ITC). It occurs almost every day during the rainy season , mainly in the afternoon (with continental characteristics) to early evening (with maritime influences). The delay in precipitation compared to the approximate zenith of the sun is caused on the one hand by the rising temperature of the soil (where the soil moisture is high) or the air close to the ground (where evaporation is dominated by plants) after midday, and on the other hand by the Temperature of the free troposphere sharply increasing "air absorption capacity for moisture" ( saturation vapor pressure ). Cumulus clouds often form in the morning, but as long as the height of the thermal increases, relatively dry mountain air is mixed in.

With a subtropical east side climate, convective zenital precipitation prevails in summer, and advective trade wind rain in "winter" .