Why does it snow in Japan?

There are several conditions for snow. First, the temperature must reach 0 degrees. Secondly, there must be saturated water and concretion.

In winter in Japan, the temperature in the north can reach below 0 degrees. (Hokkaido and northern Honshu Island) In addition, the central and southern Honshu Island and Shikoku Kyushu Island can also reach about 0 degrees, so the temperature conditions are suitable.

In addition, the wind belt moves south in winter, and Japan is influenced by the westerly belt, which blows a lot of warm and humid water vapor from the Sea of Japan, so there are sufficient water vapor conditions. In addition, there are many industrial areas in Japan, and the particles emitted by industry can be used as condensation nuclei, so it will snow in Japan.

Extended data

Climatic characteristics of Japan

Japan is dominated by temperate and subtropical monsoon climate, with hot and rainy summer, cold and dry winter and distinct four seasons. The national latitude is 25, and the temperature difference between north and south is very significant.

Most areas belong to temperate climate with four distinct seasons. Okinawa in the south belongs to the subtropical zone, and Hokkaido in the north belongs to the sub-frigid zone. 1 the monthly average temperature is -6℃ in the north,16℃; In the south; In July, it was 17℃ in the north and 28℃ in the south.

The precipitation in Japan is the highest in the world. The main reasons include winter snowfall in Japan's coastal areas; Continuous plum rains in June-July (May-June in Okinawa and Amami); And typhoons that landed in or near Japan from summer to autumn.

The highest recorded temperature in Japan is 40.9℃, which was measured on August 16, 2007 in Kumagu City, saitama and Dongdao City, Gifu County. The lowest recorded temperature is -4 1℃,1measured in Asahikawa, Hokkaido on October 25th, and it is 1902 65438+.

Baidu Encyclopedia-Japan