Causes of high temperature in northern and southern China
1, solar radiation
In summer, the direct sunlight area moves northward, which makes the northern and southern hemispheres receive strong sunlight and radiation, leading to the increase of atmospheric and ground temperatures.
2. Surface heat absorption
When the temperature rises in summer, a large amount of solar radiation energy is absorbed to the ground, and the surface temperature rises rapidly. At the same time, the temperature of the atmosphere also rises through heat conduction.
3. Atmospheric circulation
In summer, the pressure field and wind system in the northern and southern hemispheres are obviously different. The high temperature in the northern hemisphere is caused by the movement of warm and humid air from the equatorial region to the high latitude region, and the summer in the northern hemisphere is accompanied by the formation of subtropical high. These factors will lead to an increase in temperature.
4. Geographical location
The geographical location of the northern and southern hemispheres is different, and the northern hemisphere has a large continental area, a large temperature difference between land and ocean in summer, and obvious climate diversity. Because most of the southern hemisphere is covered by oceans, the climate is relatively stable.
Introduce the causes of hot weather.
With the development of human science and technology, many cities where we live are densely populated and seriously polluted, and the living environment is completely out of harmony with nature. Moreover, human society has developed for a long time. Today, some environmental pollution phenomena we know are still very serious, especially some hot weather we often see in summer, and even very serious haze weather will appear in the north in winter, which is beyond our understanding.
Temperature rise: With the rapid development of science and technology, we can clearly see that the average temperature in China is gradually rising. For example, from the earth's point of view, in the past 100 years, the average temperature of the earth has reached more than 1 1 degree. Most of the heat is radiated through the surface of the earth. After the local surface temperature rises, it is very likely that extreme high temperature weather will occur. This extremely hot weather is often caused by the surface being too hot.