At present, solar terms are determined according to the longitude of the sun. When the sun reaches longitude 3 15, it will be the beginning of spring, and the festival will be held from February 3 to 5 of the Gregorian calendar every year. In the era of cadres and branches, silver moon is spring, and beginning of spring is the beginning of a year. Beginning of spring, the Spring Festival, the revival of everything and the renewal of Vientiane. In the traditional concept, beginning of spring means auspiciousness.
Extended data
In early spring, westerly jet, the southern branch of East Asia, began to weaken, while the strength and location of westerly jet, the northern branch of East Asia, remained basically unchanged. The Mongolian cold high and Aleutian low are relatively strong, but in the interval affected by strong cold air, the frequency of southerly wind increases, accompanied by obvious warming process.
Since the solar terms in beginning of spring, the time series has entered the spring. In nature and people's minds, "spring" means warm weather and the revival of everything. Spring has begun. In nature, the most striking feature is that everything is beginning to show signs of recovery. In beginning of spring, you can obviously feel the breath of early spring in the Tropic of Cancer (Huangchi Jiao Jiao) in China and its south area.
In most parts of northern Israel, it can only be said that it is a prelude to entering spring. Everything has not been restored, or in the winter when everything is closed. For the area north of the Tropic of Cancer, the farther away from the Tropic of Cancer (where the Yellow River meets the pond), the later the spring comes.
China has a vast territory, mainly located in the middle and low latitudes. Low latitude refers to the spatial range between 30 degrees north and south latitude on the earth's surface, that is, the area between 30 degrees north latitude and 30 degrees south latitude, including tropical and subtropical hot zones, which is the area where global solar radiation and heat are concentrated. China's low latitudes (southern regions) are characterized by abundant precipitation, abundant sunshine, small temperature difference between winter and summer, and obvious seasonal changes in sunshine, precipitation and other climatic factors.
Mid-latitude is the latitude zone between 30 and 60 degrees north latitude. The main air masses at high latitude and low latitude overlap each other in this area, and cyclone activities are frequent. Mid-latitude areas (northern areas) are characterized by less precipitation, dryness and large temperature difference between winter and summer. Temperature is the obvious change of climate factors during seasonal changes. The climate varies greatly at different latitudes.
Beginning of spring is one of the "four stops". "Li Si" marks the rotation of four seasons, and reflects the laws of phenology, climate and other changes, such as spring and summer, autumn harvest, winter storage, and changes in light, precipitation and temperature. Beginning of spring is the time when the sun be the spirit was born, and everything gradually recovered. In this season of nature, yang and thorns, everything is spring.
Due to China's vast territory, complex geographical conditions and great climate differences, the specific rhythm of the calendar "beginning of spring" is not applicable to all parts of the country, and its corresponding area is Lingnan at the junction of Huangchi and Jiao Jiao. The meteorological dividing line between winter and spring is from Guilin, Guangxi to Ganzhou, Jiangxi. When the meridian of the sun reaches 365,438+05, the area south of the meridian has the breath of spring. However, 93% of China's land area is still in winter, and spring often comes to Heilongjiang in Grain Rain or in the long summer.