Spring standard of meteorology

In meteorology, it is the standard of beginning of spring to keep the average temperature above 10℃ for five consecutive days.

People generally regard spring as the beginning of a year, and everything is new and full of vitality, but spring is also the period when the weather changes the most, and the temperature changes suddenly from warm to cold. The temperature difference in a day is the largest in spring. Taking Beijing as an example, the difference between the highest temperature and the lowest temperature reached 26.8℃ on May 3rd, 1966. Therefore, in spring, we should listen to the weather forecast in time, pay attention to the weather changes and increase clothes in time.

Spring is in the adjustment period of atmospheric circulation, and cold and warm air activities are frequent. In addition to the great temperature change, dry air and windy weather are another feature. Spring is the transitional season between winter and summer, and the cold and warm air are equally strong, both of which are very active, so windy weather often occurs, especially in northern China, which is characterized by alternating north-south winds and strong winds.

Climatic conditions in north and south in spring;

1, dusty weather in the north

In spring, with the temperature rising, if there is little precipitation, the ground is dry and the wind comes, it is easy to have dusty weather. Meteorology, sandstorm weather is divided into floating dust, sand blowing and sandstorm. In northern China, March and April are the frequent periods of dusty weather. As a result of sandstorm weather, the concentration of suspended particles in the atmosphere, especially inhalable particles, increases sharply, leading to the decline of air quality.

It's rainy in the south.

It is often rainy and rainy in southern spring, with low temperature and warm temperature appearing alternately. Humidity in rainy season is high, which is easy to cause rheumatoid arthritis. In addition, it also has a great influence on people's psychological diseases. Therefore, special attention should be paid to adapting to nature and climate change in spring.