It snows in the north and the temperature in the south is over 30 degrees. Why is the weather difference between the north and the south so big?

There are heavy snowfalls in the north and high temperatures of over 30 degrees in the south. The main reasons for the huge difference in weather between the north and the south are as follows:

Reason 1: The relationship between the high angle of the sun and the intensity of solar radiation. From a geographical point of view, because of the angle between the yellow and the red, the direct sun point moves back and forth between the north and south latitudes. Between the north and south Tropic of Cancer, the height of the sun at noon is greater, so its solar radiation intensity is also will be larger. The higher the latitude between the north and south dimensions, the smaller the height of the sun at noon, the smaller the solar radiation intensity, and the less light and heat energy the earth's surface obtains per unit time.

The total solar energy radiation obtained by the earth's surface is also related to the length of day and night. If the intensity of solar energy radiation is the same, then the longer the day, the more solar energy heat will be obtained, and the temperature will be lower. will be correspondingly higher. If we take the northern hemisphere as an example, the height of the sun at noon at low latitudes will be relatively greater than at high latitudes. In summer, the farther north you go, the longer the days, the smaller the temperature difference between north and south. In winter, the farther north you go, the shorter the days, and the greater the temperature difference between the north and the south.

The second reason: large differences in precipitation and temperature. The main reason for the large temperature difference in winter in our country is that the latitude difference is relatively large, and the latitude in the northern part of our country is higher than that in the south. Compared with the south, the altitude angle of the sunlight intensity in winter is smaller, and the daytime hours The nights are shorter and there are more sunny days, so the intensity of solar radiation received by the north will not be much different. Moreover, the northern region is close to the wind source in winter, so it will be greatly affected by the winter monsoon, and the temperature will be lower than that in the south. The southern region will also be affected by the winter monsoon due to the obstruction of various mountains such as the Qinling Mountains. It is smaller below and therefore warmer than in the south. The south is affected by warm and moist air currents from the ocean, so winters are mostly mild. The northern region is greatly affected by the winter monsoon, and the temperature will drop sharply. The wind in winter intensifies the coldness in the north.