Why is there more snow in the south than in the north?

The water content of snow in the north is lower and looser than that in the south, so the snow in the south is heavier than that in the north. The snow in the south, like salt and sugar, becomes deeper as soon as it hits the ground, and the thick snow is full of water. When you step on it with your feet, you will find that rain and snow foam splash together.

Usually, one millimeter of precipitation is equivalent to 1 square meter of 8- 10 millimeter of snow in the northern region, and 6-8 millimeters in the southern region. In the north, 100 square meter area 8- 10 mm snow weight 100 kg; In the south, snow weight 130 kg.

Extended data

Formation of snowflakes

Each snowflake begins with an independent snow crystal, which is formed by condensation of water vapor on large air dust or other aerosols. Although some ice crystals will form at 32 F (0℃), the formation of a large number of ice crystals will only accelerate with the decrease of temperature. The number of ice crystals generated at-31f (-35℃) is 1000 times more than that generated at-27 f (-33℃).

In very cold air, the water vapor content is very low, so many ice crystals can only get a small amount of water during their formation. The ice crystals generated at this time are too small to generate thick clouds. They are called "diamond dust" on the ground. In the cold winter full of sunshine, they will produce halos and small rainbows.

Observing with a microscope, you will find that each ice crystal is a different hexagon. In clouds with little rainfall, ice crystals form near the freezing point, usually in the form of hexagonal thin plates. The ice crystals formed in air at 3 ~10 f (-16 ~-20℃) will extend forward in a dendritic shape.

The slender arms of ice crystals may melt or evaporate when falling, forming strange hexagonal stars. Even at colder temperatures, snowflakes usually start with pencil-shaped columnar crystals or prismatic components.

Many towering cirrus clouds are the cradle of prismatic ice crystals. There are branches hanging snow in the middle of the atmosphere, which are called vertical zones. When ice drops slowly at a speed of 2 miles (3 kilometers) per hour, it will evaporate directly before it goes far. Snow has no chance to reach the ground unless the air reaches the freezing temperature below/kloc-0.000 feet (300 meters). 1887, a heavy snow of 15 inch (38 cm) fell in Fort Ford, Montana. Every snowflake is an incredible cylinder composed of more than 100 ice crystals.

On the ground, snowflakes can be piled together to realize a good skiing plan, and can also be used to make a snowman. In dry and cold highland or plateau, powdery snow is very typical. In winter, the thick and wet snowflakes will combine quickly, and in less than an hour, it will destroy the integrity of the gray jewel-like sky.