Traditional Culture Encyclopedia - Weather inquiry - What are the most likely meanings of snow, hail and frost?
What are the most likely meanings of snow, hail and frost?
1, snow
Solid water falls from the mixed clouds to the ground in the form of snowflakes. Precipitation consisting of a large number of white opaque ice crystals (snow crystals) and their polymers (snow masses). Snow is a natural phenomenon that water falls after condensation in the air, or refers to falling snow; Snow is the solid form of water. Snow only appears under the influence of very cold temperatures and extratropical cyclones.
2. Hail
The product of condensation of water vapor and freezing of water droplets in thunderstorm clouds. Small hail with a diameter less than 5 mm is also called freezing rain or ice particles. The formation of hail requires convective clouds (such as cumulonimbus clouds) with strong updraft, so it is often accompanied by thunderstorms.
3. Frost
The air close to the ground is cooled by the radiation of the ground to below the frost point and condenses into white ice crystals on the ground or objects. Frost is a weather phenomenon, which belongs to ground meteorological observation in China. "Frost" usually appears from autumn to spring. In meteorology, the first frost in autumn is generally called "first frost" or "first frost", and the last frost in spring is called "late frost".
Reasons for the formation of snow:
There are countless tiny dust and particles floating in the air, and the air at high altitude is getting thinner and thinner, showing a saturated state that water vapor cannot invade. At this time, some water vapor enters small dust and other particles to form ice crystals. Its main formation condition is that the atmosphere is below 0 degrees. Once the ice crystals at the top of the clouds melt, they will absorb the supersaturated water vapor around them and grow, forming a snow waterfall.
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