What are the climatic characteristics of long summer?

Climatic characteristics of solar terms in long summer: After the long summer, it officially entered the rainy season, and the rainfall and rainy days increased significantly. Summer is the best season for many crops to grow vigorously. Adequate light, suitable temperature and abundant rain provide necessary conditions for plants. In summer, affected by the warm and humid air flow from the ocean, the southern region is generally hot, humid and rainy. Qinling-Huaihe river basin is a transitional area between rainy south and rainy north. From the vicinity of Huaihe River in Qinling Mountains to the north, the rainfall decreased sharply.

After entering the long summer solar term, the rainfall in the middle and lower reaches of the Yangtze River and South China increased rapidly in mid-May, and South China also entered the peak period of the first flood season. The rainstorm at this time often has the characteristics of time continuity, geographical universality and intensity. In the Pearl River system of Guangdong and Guangxi and the Minjiang River system of Fujian, the annual maximum water level often appears in this period.

Long summer is the seventh solar term among the twenty-four solar terms and the first solar term in summer. The festival is held on May 5-7 of the Gregorian calendar every year. At this time, the bucket handle of the Big Dipper points to the southeast, and the longitude of the sun reaches 45. Long summer is an important solar term, marking the peak season for the growth of all things.

Chang Xia said that saying goodbye to spring is the beginning of summer. Spring comes and summer grows, autumn harvests and winter storage, and in the long summer, everything is thriving. Because China has a vast territory and a large span from north to south, natural rhythms vary from place to place.