Meteorological standard for entering spring

Meteorological standard for spring: the average daily temperature exceeds 10℃ for five consecutive days.

Spring is spring. The commonly used methods of season division in China mainly include "solar terms method" and "temperature method". Traditionally, spring begins with "beginning of spring" in 24 solar terms. The spring divided by the "solar terms law" indicates that the winter in which everything is hidden has passed and it has begun to enter the spring of sunny weather and the growth of everything.

The "temperature method" divides the spring, adopting the "average temperature" of modern scholar Zhang Baokun. Spring begins when the average temperature of the day rises above 10℃ for five consecutive days, and ends when the average temperature of the day is higher than 22℃ for five consecutive days. When the average temperature (the average temperature for five consecutive days) is lower than 10℃, winter begins; When the average temperature is higher than 22℃, summer begins. The average temperature in spring or autumn is 10-22℃.

Characteristics of spring

1, the temperature changes greatly. Spring, as the beginning of a year, is full of vitality, but it is also the period with the biggest weather change in a year. The temperature changes from warm to cold, and the temperature suddenly changes. The temperature difference is the biggest in spring, so it is necessary to listen to the weather forecast in time, pay attention to the weather changes and increase clothes in time.

2. The air is dry and windy. Spring is in the adjustment period of atmospheric circulation, and cold and warm air activities are frequent. In addition to the great temperature change, the dry and windy air is another feature. Spring is the transitional season between winter and summer, and the strength of cold and warm air is equal, and both are very active.

It's dusty in the north. In spring, with the temperature rising, if there is less precipitation and the ground is dry some time ago, in northern China, March and April are still the frequent periods of dusty weather every year.

It is rainy in the south. In early spring or late autumn in China, it rained continuously for several days or even months, and the weather was cold and there was almost no sunshine. Also known as low temperature and continuous rain, in the south, it often rains continuously in spring, and low temperature and warm temperature appear alternately.