Weather represented by cyclone and anticyclone respectively.

Influence of cyclone on weather: When the cyclone transits, the cloud cover in the central area increases and it is rainy. There is a southerly wind blowing from the east of the cyclone in the northern hemisphere. It is cloudy and rainy because of the high temperature and high water vapor content from low latitudes. The north wind blows to the west, the air comes from high latitudes, the precipitation is less, and there are often strong winds and cool weather. Impact of anticyclone on weather: the airflow below the central area is dominant, which is not conducive to the formation of clouds and rain, and it will be sunny for many days. In the northern hemisphere, the northerly airflow is dominant in the eastern part of the anticyclone, because it comes from higher latitudes, the temperature is low, the water vapor content is low, and the sandstorm weather cools down; The west is dominated by difficult airflow, with high temperature and high water vapor content, which can cause warming and rainy weather.