Astronomically, the vernal equinox, summer solstice, autumn equinox and winter solstice start the four seasons of spring, summer, autumn and winter respectively, generally starting from February 2 to 5 and ending from May 5 to 7. This time period is spring. Statistically speaking, it is generally the coldest in June 5438+ 10 and the hottest in July. March, April and May are spring, June, July and August are summer, September 10, 1 is autumn, and the following year's/kloc. Spring, also known as spring, is the first of the four seasons, which refers to the period from beginning of spring to long summer, including solar terms such as beginning of spring, rain, fright, vernal equinox, Qingming and Grain Rain. This is the season when everything comes back to life.

spring

Spring is one of the four seasons. As far as solar terms are concerned, spring begins in early spring and ends in long summer. Twenty-four solar terms are the product of ancient farming civilization in China, and the division of four seasons begins with "four stands". In the historical development, cultural exchange and communication, four solar terms (vernal equinox, autumnal equinox, summer solstice, winter solstice) reflecting the return movement of the direct point of the sun were all over the pre-Qin period. The division of the four seasons in the west is based on the dichotomy, that is, spring is divided into beginning of spring. The vernal equinox in the "vernal equinox" is also the New Year of Uzbekistan, Turkey, Afghanistan, Iran and other countries, with a history of more than 3,000 years. In Ireland, February to April is designated as spring. In spring, the northern hemisphere of the earth began to tilt towards the sun, receiving more and more direct sunlight, so the temperature began to rise. In spring, plants begin to sprout and grow, and many flowers bloom. Hibernating animals wake up, many animals with eggs for the winter hatch, and birds begin to migrate, leaving the wintering ground for breeding grounds.

climate

In spring, the northern hemisphere of the earth began to tilt towards the sun, receiving more and more direct sunlight, so the temperature began to rise. In spring, plants begin to sprout and grow, and many flowers bloom. Hibernating animals wake up, many animals with eggs for the winter hatch, and birds begin to migrate, leaving the wintering ground for breeding grounds. Many animals are in estrus during this period, so China also calls spring the season of "the revival of everything". Because hot air began to move northward, while cold air often lingered, in addition, the temperatures of land, water and air all rose at different speeds. From the meteorological point of view, China belongs to the monsoon climate zone, and spring is the period of alternating winter and summer monsoon, so the cold air and warm and humid air flow are changing, and they do not give in to each other. In the southern region, a cold air intrudes every three to five days in spring, and meets with the southwest warm and humid airflow, forming rainy weather. Spring is rainy season in many places in southern China, but it is rainy and dry in northern China. There are often strong storms in Europe and tornadoes in North America.