What is the principle of weather modification?

The principle of weather modification: mainly through artificial means to increase cloud precipitation. According to the principle of cloud and precipitation physics, by sowing catalysts (salt powder, dry ice or silver iodide, etc. ) When entering the cloud, cloud droplets or ice crystals will increase to a certain extent and fall to the ground to form precipitation.

There are two main types of artificial intervention in weather: artificial rainfall and artificial snowfall.

1, artificial precipitation enhancement is to artificially supplement some necessary conditions for precipitation formation according to the principle of precipitation formation in nature, so as to prompt cloud droplets to quickly condense or contact and grow into raindrops and land on the ground. According to the physical characteristics of different clouds, choose the right time to spread dry ice, silver iodide, salt powder and other catalysts into the clouds by planes and rockets to make the clouds precipitation or increase precipitation, so as to alleviate or alleviate the drought in farmland, increase the water supply capacity for irrigation or reservoirs, or increase the water for power generation.

2. There are two conditions for water vapor in the sky to turn into rain and snow. One is that there must be a certain water vapor saturation (mainly related to temperature), and the other is that there must be condensation nuclei.