Is the first frost sunny or cloudy?

The first frost sunrise is the last solar term in autumn, which reflects the change of temperature. It is the transition from autumn to winter, which means that winter is coming. The first frost solar term means that the weather is getting colder and colder, and the first frost will appear.

Clear skies at night are conducive to the rapid radiation cooling of the ground or ground objects. Breeze can fully cool radiation in the thick gas layer, and can also replace the air close to the ground to ensure sufficient water vapor condensation.

Extended reading:

The first frost, one of the 24 solar terms, is around 65438+1October 23rd every year. The first frost solar term means that the weather is getting colder and the first frost appears. It is the last solar term in autumn, which also means that winter is about to begin.

At this time, the first frost generally appears in the Yellow River basin, and most areas are busy planting crops such as three wheat. Health care is particularly important in the first frost season. There is a folk proverb that "it is better to make up the first frost once a year", which shows the influence of this solar term on people.

The autumn harvest has been completed in most parts of the north, and even the cold-resistant onions can't grow any longer, because "the first frost can't support onions, and the longer they grow, the more empty they become." In the south, it is the peak season of "Sanqiu". Only single-season hybrid rice and late rice are harvested, and early-season wheat and early-season rape are planted. Picking cotton, pulling cotton stalks, ploughing and soil preparation. "The straw is pulled all over the floor, and there will be fewer insect pests and diseases in the future."

Take back the straw and stubble in time after harvest, because there are many wintering eggs and germs hidden there. The Chinese cabbage in North China is about to be harvested, so it is necessary to strengthen the management of the early frost season in the later period. Most parts of China have entered the dry season, so we should attach great importance to forest protection and fire prevention.