Seasonal division in Europe

In Europe, the four seasons start around the spring equinox-March 2 1, summer solstice-June 22, autumn equinox-September 23, and winter solstice-June 2 1. In China folklore, beginning of spring-around February 4th, Long Summer-around June 5th, beginning of autumn-around August 8th, beginning of winter-165438+1October 8th in the "24 solar terms" are often used as the beginning of the four seasons. But in climate, 65438+ 10 is the hottest month in Leng Yue, so March, April and May are spring, June, July and August are summer, and September 10,1is autumn.

In four years, Zhang Baokun put forward a new seasonal standard which combined phenology with agricultural production. He started in winter when the average temperature (the average temperature for five consecutive days) dropped below 10℃, and started in summer when the temperature rose steadily above 22℃. Accordingly, when the average temperature rises steadily from below 10℃ to above 10℃, it drops from above 22℃ to below 22℃ in spring. This is also the current division of the four seasons from the perspective of weather and climate, and it is also recognized by the meteorological community as a standard for the division of the four seasons.