The temperature in Hunan is fierce! There is also a round of rain to cool down! Will the weather be fine on May Day?
On April 23rd, Hunan lowered the temperature in Changsha to 1 1℃, and returned to February directly! This wave of cooling will last until the 25th, overlapping with rainy weather. The feeling of cold will be obvious. The Hunan Meteorological Observatory predicts that there will be a heavy rainfall cooling process in Hunan in the next few days, and there will be heavy rains in northern Hunan and southern Hunan! After the 26th, the temperature will obviously rise.
From 20: 00 on the 23rd to 20: 00 on the 24th, there were small to moderate rains or thunderstorms on cloudy days, including heavy rains in southern Zhuzhou, eastern Hengyang and eastern Chenzhou, and heavy rains in Yongxing, Zixing, Guidong and Yucheng. The north wind is 3 ~ 4; The highest temperature in southern Hunan is 13℃ ~ 15℃, and the highest temperature in other areas is 1 1℃ ~ 13℃. The lowest temperature is 10℃ ~ 12℃ in southern Hunan and 8℃ ~ 10℃ in other areas.
Factors affecting weather change:
1. Motion factor: The earth's rotation will cause the alternation of day and night, forming the sun rising and setting in the west. In this process, the height of the sun will change accordingly, and the temperature will form a current angle that is low in the morning and high at noon. Because there is an angle of 66.5 degrees between the earth's axis and the orbit of revolution, the direct point of the sun moves back and forth between the tropic of cancer when the earth revolves, thus forming the four seasons change of the earth.
2. Latitude factor: Because the earth is a sphere, the height of the sun decreases from low latitude to high latitude, which makes the intensity of solar radiation decrease from low latitude to high latitude, which leads to the gradual decrease of temperature from low latitude to two poles, thus forming five temperature zones on the earth. The tropical region has direct sunlight twice a year, and the average noon sun height is the highest, so the annual average temperature is the highest. Cold regions are the coldest because the average height of the sun is the smallest.