Ganzhou City, Jiangxi Province, what is the reason for frequent rain in the summer?

Because the summer evaporation is relatively large, the air contains water vapor is relatively rich, easy to reach saturation, and the summer is generally high temperature (only look at the northern hemisphere) is easy to line into the low-pressure, air vertical convection is strong, easy to become a cloud to the rain, and the water vapor is richer than in winter explains the summer rain more violent than in winter. Summer rain is usually formed in the late afternoon, 12 o'clock is the sun's maximum altitude angle, after 1 to 2 hours, the atmospheric temperature to reach the highest value of the day, this time the air strong convection, the formation of precipitation, and precipitation in the process of cooling, the temperature drops, air convection becomes weaker, it is difficult to rise to the high altitude of the water vapor condensation into rain. The rain stops. And in winter, the continent is generally cold, prevailing high pressure, high pressure