What is all the snow in cold weather?

It's freezing and snowy, and the mountains are covered with snow.

Ice and snow: describe ice and snow.

Heavy snow: describes heavy snow. Dripping water into ice: describes that the weather is particularly cold.

Cold wind: biting cold. Describe it as cold.

December: October, November (winter month) and December (twelfth month) of the lunar calendar, with cold weather. Also known as "winter".

Count nine cold days: Count nine. Every nine days from winter to Sunday is a "nine", from one "nine" to nine "nine". Describe a particularly cold winter.

Bitter cold: describes the extremely cold weather. Ice and snow describe the cold climate, and there is ice and snow everywhere.

weather

Snow refers to solid water falling from 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. Snowfall only occurs under the influence of very cold temperatures and extratropical cyclones, so the probability of snowfall in subtropical and tropical areas is relatively small.

Water vapor in the atmosphere condenses directly or water droplets condense directly, which is snow. It can also be said that it snows when the temperature in the cloud is too low and small water droplets form ice crystals and fall to the ground or snow. Ice absorbs heat when it melts, so the ground temperature will be lower than when it snows. Snowfall consists of a large number of snow crystals of different sizes, and generally there are many smaller ones. In order to describe the particle size distribution characteristics of falling snow crystal population, snow crystal spectrum or solution spectrum after snow crystal melting is often used.

Snow crystals are mainly increased by condensation in clouds. First of all, ice crystals are produced by ice nucleation in cold clouds. They grow into snow crystals through condensation (ice crystal process), and then they can grow by colliding with supercooled water droplets. The shape of snow crystal will change when it meets a large number of supercooled water droplets. Snow crystals have various shapes, which are related to the temperature and humidity of their growing environment.

Snowfall, like all precipitation, is measured by the equivalent water layer thickness, and the unit is mm. In practice, it is sometimes measured by the accumulated depth of snowfall on the flat land, which is called snow depth.