Traditional Culture Encyclopedia - Weather forecast - Why is the weather changeable in summer?
Why is the weather changeable in summer?
Hail-one of the important reasons why the disastrous weather in summer makes the summer weather so changeable is water vapor, and abundant water vapor is the basic substance of various weather changes. Speaking of water vapor, we want to introduce a weather system to you, that is, subtropical high. The subtropical high is a high-pressure system with an average latitude of 35 degrees, which is roughly arranged along the latitude circle. The position of subtropical high has obvious seasonal variation. In the northern hemisphere, summer is north and winter is south. The airflow rotates clockwise outward from the high pressure center, forming a southerly airflow in the western part of the high pressure, and continuously transporting warm and humid air from the ocean to Chinese mainland, thus providing water vapor for rainfall. When the warm and humid airflow meets the cold air from the north to the south, it will form a wide range of rainy weather. Because the position of this high pressure changes with the seasons, the rain belt in the summer of China will advance from south to north in turn. In autumn, the subtropical high moves south, and the rain belt also moves south. This is why the rainy season in the south of China starts early, ends late and lasts for a long time, while the rainy season in the north starts late and ends early and lasts for a short time.
The warm and humid airflow south of the edge of subtropical high can bring a lot of water vapor to China, but the interior of subtropical high is often hot, dry and sunny due to the influence of descending airflow. Some abnormal subtropical high is the chief culprit of disastrous weather in China.
- Previous article:Who has time to tell me the weather in Nanchong in the next few days?
- Next article:What clothes are suitable for the weather in Kunming?
- Related articles
- The temperature in many places in Sichuan will reach above 40¡æ. What diseases should we be wary of in this weather?
- Short sentences suitable for summer style writing are refreshing (selected 65 sentences)
- Observation diary of mung bean germination
- How to write the safety instructions for street lamp hoisting?
- What is the weather and temperature in Hainan in September?
- Shanghai Jinshan weather forecast 24
- The Water Margin summarizes the main contents of Chapter 19 (300 words). Please hurry, thank you.
- Jia Ling weather dance
- Introduction to go on road trip, a minority scenic spot in Dongguan and Guangzhou.
- How to make a quiet book