What kind of terrain and weather have the greatest influence on solar radiation?

The reason why the solar radiation changes greatly when the terrain fluctuates greatly is that the closer the atmospheric density is to zero, the higher the altitude density will be and the lower the altitude density will be. Of course, the loss of optical radiation through low density is small, and the loss of high density is large. Therefore, the ups and downs of topography are closely related to solar radiation.

There are four main factors that affect the intensity of solar radiation.

1. Latitude position

At low latitudes, the solar altitude angle is large at noon, and the distance of solar radiation passing through the atmosphere is short, so it is less weakened by the atmosphere, so more solar radiation reaches the ground; On the contrary, it is even less. This is the main reason why solar radiation decreases from low latitude to high latitude. The earth's orbit around the sun is elliptical, and the sun is located in one of two focal points.

Therefore, the distance between the sun and the earth has been changing. Every year165438+ passes through perihelion from October 2nd to 5th and apohelion from July 3rd to 4th. The intensity of solar radiation received on the earth is inversely proportional to the square of the distance between the sun and the earth. The angle between the sun's rays and the ground level is called the solar altitude angle, which changes every day and every year. When the solar altitude angle is large, the solar radiation is strong.

2. Meteorological conditions

On sunny days, because the clouds are few and thin, the atmosphere has a weak weakening effect on solar radiation, and the solar radiation reaching the ground is strong; In rainy weather, due to the thick and many clouds, the atmosphere has a strong weakening effect on solar radiation, and the solar radiation reaching the ground is weak. For example, the equatorial region is controlled by the equatorial low pressure belt, and there is much convective rainfall, while the subtropical region is controlled by the subtropical high, so the solar radiation in the equatorial region is weaker than that in the subtropical region.

3. Altitude

The upper air is thin, and the weakening effect of the atmosphere on solar radiation is weak, so the solar radiation reaching the ground is strong; On the contrary, it is weak. This is the main reason why the Qinghai-Tibet Plateau has become the region with the strongest solar radiation in China. This is the main reason why the Qinghai-Tibet Plateau has become the region with the strongest solar radiation in China.

The large amount of solar radiation does not mean that the temperature can be high. For example, in winter, Chinese mainland has a large amount of solar radiation in winter, so why is the temperature low? That's because Chinese mainland is influenced by Mongolian Siberian high in winter, controlled by high pressure, with sunny and dry weather and low temperature. For example, the Qinghai-Tibet Plateau has a high amount of solar radiation all year round, but the temperature has not been high. That's because of the terrain and altitude, the air is thin and the temperature is low. For example, Turpan Basin is affected by topography, with high temperature and large solar radiation, but Turpan has a lot of solar radiation in winter. However, due to the high pressure in Mongolia and Siberia and low temperature, the intensity of solar radiation does not determine the temperature, but is also affected by many natural and human factors such as geographical location and topography. I hope it can be adopted, thank you!