There was a "fake snow" in Zhejiang. How to treat this artificial snowfall?

First, the rain and snow process is conducive to purifying the air, improving soil moisture and reducing the risk level of forest fires. Not all rain and snow weather processes are suitable for artificial snow increase, artificial? Auxiliary? Appropriate meteorological conditions are also needed. First of all, there should be clouds and enough water vapor in the sky, otherwise what will happen? A clever woman can't cook without rice? It won't snow. And the snow cloud must be below 0 degrees? Leng Yun? .

Second,? Light it? Cloud, diffusion refrigerant, crystallizer, hygroscopic agent and water mist, etc. So as to increase the concentration of ice crystals in the cloud, make up for the deficiency of condensation nuclei in the cloud, strengthen collision activities in the cloud, promote the increase of cloud droplets, change the size, distribution and properties of cloud droplets, and accelerate the growth process of raindrops, thus achieving the purpose of increasing precipitation.

Thirdly, artificial precipitation and snow enhancement is a scientific and technological means to effectively develop and utilize cloud and water resources in the air, and the cost input is quite economical relative to the realization of benefits. Some calculations show that the usual input-output ratio is 1: 40. The most direct performance of artificial snow increase is that it can save a lot of irrigation costs. At present, the irrigation cost of an acre of land is about one or two hundred yuan, and the agricultural land that needs irrigation every year in Jinan alone is calculated in millions of acres. And this is not the high cost of forest protection and fire prevention.

Fourthly, funa's good economy has been widely recognized. According to relevant personnel, due to the increase of rain and drought, hail suppression and disaster reduction, and the need to improve the ecological environment, artificial precipitation and snow enhancement operations have been widely carried out. In order to protect spring, artificial precipitation and snow increase has become a normal work; The city also uses artificial rain and snow to alleviate the drought during the critical period of agricultural water demand, such as spring wheat turning green, spring ploughing and spring sowing.

5. Artificial precipitation (snow) is a microphysical process, not a chemical change that produces new substances. Although silver ions in silver iodide are heavy metals, the amount of silver iodide is very small, scattered over a large area, and the content per unit area is very small, which is almost negligible.

6. As the temperature decreases, the water vapor in the air condenses when it is cold, forming precipitation. That is to say, precipitation needs enough water vapor in the air, and then the temperature drops. Therefore, artificial snowfall should choose weather conditions with less snowfall in the weather forecast, which can increase the snowfall effect.