What season is the storm?

China is located in the northern hemisphere, and the summer high temperature in the northern hemisphere is the most remarkable climate feature. Because of the different regions and dry and wet environments, it will produce a dry and hot or humid and rainy climate.

In China, the coastal areas were heated inland in May, and a low pressure formed in the southwest caused the southwest monsoon, which reached the coastal areas of China in May. At this time, the northeast monsoon is blocked by the southwest monsoon, and it is rarely affected in summer.

In May, the weather in the north is still very cold. The cold air in the north meets the southwest monsoon in the south, forming a trough of low pressure in the South China Sea, which is the beginning of the rainy season in Guangzhou. In June, the subtropical ridge moved to South China, and the Yangtze River basin entered the rainy season. In July, the subtropical high reached the vicinity of the Yangtze River basin in China with the passage of time, and there was a summer drought in the Yangtze River basin.

Summer is the best season for the vigorous growth of many crops, and sufficient light and suitable temperature provide necessary conditions for plants. Most areas will be affected by low pressure and the climate is relatively stable. But the ocean near the equator will form a typhoon, which is easy to damage the surrounding area.

Time division of summer:

In China, summer begins in the long summer (between May 5th and 7th in Gregorian calendar) and ends in the beginning of autumn (between August 7th and 9th in Gregorian calendar). Westerners generally call summer the solstice and autumn the summer. In the southern hemisphere, 65438+February, 65438+ 10 and February are generally designated as summer.

In the northern temperate zone, the meteorological summer is from May 2 1 day to August 23 (summer heat) on the Gregorian calendar. In the south temperate zone, the meteorological summer is165438+1October 22nd (corresponding to the light snow in the northern hemisphere) to February 19 (corresponding to the rain in the northern hemisphere).

According to the characteristics of the earth's revolution, the summer time in the north temperate zone is theoretically longer than that in the south temperate zone (the earth is at apohelion in early July, and its running speed is slow. 1 Start, the earth is at perihelion, and the running speed is fast).

In the sense of modern climatology in China, it is summer when the average temperature exceeds 22 degrees for five consecutive days, and autumn when the average temperature falls below 22 degrees for five consecutive days.

Baidu Encyclopedia-Summer