202 1 What is the lowest temperature?

202 1, the minimum temperature dropped to -43.5℃.

202 1 The temperature dropped significantly in the mountainous areas of central and eastern Guizhou, central and western Hunan, southeastern Chongqing and western Hubei, with heavy snow and local snowstorms. The northern area is concentrated in the northern part of Shandong Peninsula, and the snowfall lasts for a long time, which will reach the magnitude of blizzard, and the minimum temperature will drop to -43.5℃.

At the end of 20021,due to the influence of strong cold air, there was a sharp cooling weather in Heilongjiang and Inner Mongolia, and the minimum temperature in many places fell below MINUS 40 degrees Celsius. In Mohe City, Heilongjiang Province, the temperature plummeted 19 degrees Celsius within 48 hours. The lowest temperature in amuer Town dropped to minus 43.5 degrees Celsius this morning, which is also the lowest temperature since Mohe entered the winter.

The cause of low temperature

The surface temperature of the earth is mainly the radiation of the sun. The strong radiation (sunlight) from the sun to the earth is hot, and the weak radiation is cold. The earth moves around the sun in an oval shape, and winter is the perihelion, that is, the sun gives the earth weak radiation at this time, so the temperature of the earth is low.

Because of the revolution of the earth, one side of our earth is facing away from the sun in winter, that is to say, the other side of the earth is facing away from the sun in summer. Our backs are to the sun, so it will be very cold. Although we can see the sun every day, the sun is not directed at us. Who scatters sunlight?