In the summer of the northern hemisphere, all kinds of creatures have come back to life, and most of them have started vigorous life activities. Many creatures will breed offspring in summer, and various animals choose to mate and have children in summer; Plants compete to blossom and bear fruit. In summer, everything is prosperous here. Summer is a season of struggle between Yin and Yang, with Yang upward and Yin forced downward. In summer, the sun is full, especially in midsummer. In midsummer, pure yang is healthy, which is awe of yin and evil. Summer is divided into three stages: Xia Meng, midsummer and seasonal summer. According to the solar calendar, it is probably May in Xia Meng, June in midsummer and July in the last month of summer. Because the direct point of the sun on the summer solstice is on the tropic of cancer, the summer solstice is always on June 2 1 or 22 in the solar calendar.
The high temperature in summer in the northern hemisphere is the most remarkable climate feature. Due to the difference of region and dry and wet environment, it will produce dry and hot or wet 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. It will not be affected until the end of August to mid-September. With the arrival of the first southwest monsoon, China has entered the 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 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.
Extended data
Summer is the second and one of the four seasons in a year. High temperature is the most prominent climate feature in summer, but due to different regions and different dry and wet environments, different climates will be produced, such as hot and dry or wet and rainy.
Spring, long summer, autumn harvest and winter storage are the best seasons for many crops to grow vigorously. Adequate light, suitable temperature and abundant rain provide necessary conditions for plants. Monsoon climate is the main feature of China climate. Summer is affected by the warm and humid air flow from the ocean, which is characterized by high temperature, high humidity and rainy weather. The same period of rain and heat is beneficial to crop growth, and crops have entered a vigorous growth stage in summer.
In the northern temperate zone, the meteorological summer is from May 2 1 day to August 22 (summer) on the Gregorian calendar.
In the south temperate zone, the meteorological summer is165438+1October 2 1 (corresponding to light snow in the northern hemisphere) to February 19 (corresponding to rain in the northern hemisphere).
According to the characteristics of the earth's revolution, the summer duration in the north temperate zone is theoretically longer than that in the south temperate zone.