Causes of severe convective weather

During the day, the ground constantly absorbs the short-wave radiation of the sun, and the temperature rises, emitting long-wave radiation to heat the atmosphere. Severe convective weather refers to convective gale (≥ 17.2m/s), hail and short-term heavy precipitation (≥20mm/h) accompanied by thunderstorm, which is one of the disastrous weather with great destructive power. The reason for the formation of strong convective weather is that the ground continuously absorbs short-wave radiation from the sun during the day, and the temperature rises, releasing long-wave radiation to heat the atmosphere, and the hot air near the ground rises under the buoyancy, forming a rise. When it rises to a certain height, the water vapor contained in the air will condense into water droplets due to the temperature drop. When water droplets fall, they are picked up by stronger updraft, and so on. Small water droplets begin to accumulate and integrate into large water droplets until the upper air cannot support their weight, and finally they fall into the rain. Weather refers to the specific state of the atmosphere near the surface in a short period of time. Weather phenomenon refers to various natural phenomena in the atmosphere, that is, the comprehensive expression of the spatial distribution of various meteorological elements in the atmosphere (such as temperature, pressure, humidity, wind, clouds, fog, rain, flash, snow, frost, thunder, hail, haze, etc.). ) in an instant.