What are the types of precipitation?

Frontal rain, convective rain, topographic precipitation, cyclone rain.

1, positive rain

Frontal rain mainly occurs in nimbostratus system, and n

Frontal rain, convective rain, topographic precipitation, cyclone rain.

1, positive rain

Frontal rain mainly occurs in nimbostratus system, and nimbostratus system is the thickest in frontal cloud system. It is also a mixed cloud formed by cold and warm air. Its upper part is ice crystals, the lower part is water droplets, and the middle is often filled with ice water, which can quickly cause collisions.

Because of the large thickness of the cloud, the cloud droplets travel a long distance in the process of merging, which is beneficial to the increase of cloud droplets. The bottom of nimbostratus is close to the ground, so raindrops are not easy to evaporate during falling, which is beneficial to the formation of precipitation.

The thicker the rain layer, the closer the cloud bottom is to the ground, and the stronger the precipitation.

2. Convective rain

Convective precipitation is precipitation from convective clouds. Specifically, when the convection develops to a certain extent, the precipitation particles in the cloud can no longer be supported by the updraft and fall.

This convective precipitation is characterized by small range, large intensity, uneven distribution, short duration and rapid change with time.

Convective precipitation is a common extreme weather phenomenon in the middle and lower reaches of the Yangtze River.

3. Topographic precipitation

In topographic precipitation, when the moist air mass moves forward, it is blocked by high mountains, and the airflow is forced to rise slowly, resulting in adiabatic cooling and condensation. The rainfall thus formed is called topographic precipitation.

Topographic precipitation is named because it occurs under the blocking effect of topography.

The hillside with precipitation is just the windward side, so it is windward slope.

On the leeward side, because the airflow sinks and the temperature rises, there is no precipitation.

4. Cyclone rain

[Cyclone rain] refers to the rain brought by cyclone or low-pressure transit, which can be divided into non-frontal rain and frontal rain. The former is the updraft generated by the convergence of cyclones to the low pressure area, which makes the water vapor contained in it cool and condense.

Among them, the main type of precipitation in China is frontal rain.

Extended data:

The spatial distribution of precipitation is usually represented by precipitation isoline map, and the average precipitation in the basin can also be calculated from the map.

The overall distribution of global annual precipitation is gradually decreasing from the equator to the north.

After passing through the subtropical high, it tends to strengthen from south to north.

After the prevalence of westerlies, precipitation tends to decrease, and the annual precipitation in polar regions is less.

The highest annual precipitation record in China is Huoshaoliao, Taiwan Province Province, with an average annual precipitation of 6,558.7mm and a maximum annual precipitation of 8,409 mm.

The place with the least annual precipitation is Toksun in Turpan Basin, with an average annual precipitation of only 5.9 mm, and the annual precipitation days are less than 10 days, and there is not a drop of water in some years.

On both sides of the road in Turpan, you can often see houses built of cross-shaped hollow adobe, which is a "drying room" specially used to make raisins. In a dry and rainy climate, grapes can be naturally dried in the "drying room", which is the production method of Turpan raisins.