立春在中国是一个非常重要的节气，它标志着冬天的结束；春天的开始。可是，中国大部分地区在立春后仍然飘雪，气温甚至持续降低。那么，立春真的就是春天的开始吗？本期视频会讲解立春的定义和气象学春季的定义。

The Beginning of Spring is a very important solar term in China. It marks the end of winter.The beginning of spring.However, snow still falls in most parts of China after the start of spring, and even the temperature continues to drop.So, is the beginning of spring really the beginning of spring?This video is on the definition of start of Spring and the meteorological definition of spring.

这里解释一下

太阳和地球的位置是相对的，从地球的角度来看，是太阳到达了黄经315°

连续五天滑动平均温度指

3.1 3.2 3.3 3.4 3.5 这五天的温度求平均值

3.2 3.3 3.4 3.5 3.6 这五天的温度求平均值

3.3 3.4 3.5 3.6 3.7 这五天的温度求平均值

3.4 3.5 3.6 3.7 3.8 这五天的温度求平均值

3.5 3.6 3.7 3.8 3.9 这五天的温度求平均值

一共观测9天，如果都大于等于10℃则选取第一个满足条件的日期作为春季起始日

 

Here's an explanation

The position of the sun and the Earth is opposite, and from the earth's point of view, the sun reaches longitude 315 degrees

Sliding mean temperature for 5 consecutive days

3.13.2 3.3 3.4 3.5 The average temperature of the five days was calculated

3.2 3.3 3.4 3.5 3.6 The average temperature of the five days was calculated

3.3 3.4 3.5 3.6 3.7 The average temperature of the five days was calculated

3.4 3.5 3.6 3.7 3.8 The average temperature of these five days

3.5 3.6 3.7 3.8 3.9 The average temperature of these five days

A total of 9 days were observed. If all of them were greater than or equal to 10℃, the first date meeting the conditions was selected as the starting date of spring