Traditional Culture Encyclopedia - Weather inquiry - Cold and warm fronts and what's the difference between cyclone and anticyclone?
Cold and warm fronts and what's the difference between cyclone and anticyclone?
Cyclone is a pressure system, that is, a low pressure center. Due to the geostrophic bias, the airflow moves to the center. As the airflow spirals towards the center, northerly winds prevail on the west side and southerly winds prevail on the east side of the cyclone, that is, cold front on the west side and warm front on the east side. So cyclones can form a cold front, that is, they can accompany each other, and the cold front is always located on the west side of the cyclone. Anti-cyclone is also a weather system and a high pressure center. Anti-cyclone is divided into cold anti-cyclone, warm anti-cyclone and mobile anti-cyclone. On the side where the pressure gradient force of cold anticyclone is large, there is often a cold front ahead, which is due to the spread of cold air caused by excessive accumulation of cold air masses. Therefore, both cyclones and anticyclones can form fronts, but fronts always appear in low-pressure troughs rather than high-pressure ridges. The influence of cold front on the weather is cooling, strong wind, more precipitation and fast front movement. As soon as the front line passed, the weather suddenly cleared up, the air pressure rose, and the weather was mainly cold and sunny; The influence of warm front on the weather is that the temperature rises, the precipitation continues and the cover moves slowly. After the front line, the weather turned fine and the temperature rose; In rainy weather under the control of cyclone (low pressure center), the central air pressure is low and updraft prevails; How sunny it is under the control of anticyclone (high pressure center). If it is warm anticyclone (subtropical high pressure), it is sunny, hot and dry. If it is a cold anticyclone, it is cold, sunny and dry. )
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