What does rapids mean? What is rapids?

1, jet stream refers to a narrow strong wind belt with a wind speed greater than 30m/s ... which is an important feature of atmospheric circulation. The jet observed on the weather map bends around the earth for several Qian Qian meters from west to east, with a horizontal width of about Qian Qian meters and a vertical thickness of several kilometers to more than ten kilometers. According to the formation area and structure of jet stream, it can be divided into polar front jet stream, subtropical jet stream, tropical easterly jet stream and extreme night jet stream. According to the different injection heights, it can be generally divided into high-altitude injection and low-altitude injection.

2. Because jet is related to the transport of atmospheric heat and angular momentum, it is an important link in global atmospheric circulation. Jet stream is often associated with front area, so it is closely related to the occurrence and development of weather system. Jet stream is one of the important research topics in meteorology.