Climatic characteristics of summer solar terms: Is summer the hottest time?

The solar term of the Great Summer is characterized by high temperature, intense heat and high temperature and drought, and the Great Summer is the hottest time of the year.

1, extremely hot at high temperature

Summer heat is generally in the middle of three volts. At this time, most parts of the country are in the hottest stage of the year, and the temperature difference across the country is not large. Just in line with the proverb: "cold is in the March 9 th, and heat is in the middle." The summer heat is relatively mild, as the name implies, it is relatively hot. According to the surface climate data of China1971~ the statistics of extreme maximum temperature in August of 30 years in 2000, it can be seen that the extreme maximum temperature in July in some provinces and regions appeared in late July, and the extreme maximum temperature in most provinces and regions appeared in early August, just in the summer of July and August of the following year.

2. High temperature and drought

There is an agricultural proverb in the middle and lower reaches of the Yangtze River: "It is a bit dry if it doesn't rain for five days, a bit dry if it doesn't rain for ten days, and it doesn't rain in January." It can be seen that high temperature and little rain are the conditions for the formation of summer drought, and the harm of continuous large-scale high temperature drought in summer drought areas is sometimes greater than local floods. In addition to drought prevention in the middle and lower reaches of the Yangtze River, it is also necessary to prevent drought in Shaanxi-Gansu-Ningxia and the eastern part of southwest China, especially in eastern Sichuan and Chongqing.