What season is it now?

Second, it is now common to divide the four seasons by combining astronomical seasons with climatic seasons. That is, March, April and May are spring, June, July and August are summer, September 10, 1/autumn, 12,1and February are winter.

1. Seasons are several periods in which geographical landscapes appear periodically every year. The division of seasons is different in different seasonal areas. For temperate climate, especially in China, a year is divided into four seasons, namely, spring, summer, autumn and winter. For savanna, there are only dry season and rainy season. In the cold zone, not only winter, but also the North and South poles can be divided into four seasons.

2. The fundamental reason of seasonal variation is that the earth's rotation axis is not perpendicular to its orbital plane, and the deviation angle is 23 degrees and 26 minutes (ecliptic angle). In different seasons, the northern and southern hemispheres receive unequal sunlight. The hemisphere with more sunshine is in summer and the other half is in winter. Spring and autumn are transitional seasons. When the direct point of the sun is close to the equator, the sunshine conditions in the two hemispheres are similar, but the trend of seasonal development is still opposite-when it is autumn in the southern hemisphere, it is spring in the northern hemisphere.

3. Temperate zone: The subtropical zone has four distinct seasons. Cold zone: The cold zone is very cold all year round, but the temperature difference in Xia Dong is still obvious. In summer and winter, there will be extreme days and nights. Tropical: Direct sunlight will appear with the change of seasons, with little temperature difference in each season, and meteorology is mainly affected by wet and dry conditions and monsoon.