What Is a Cyclone?
In meteorology , a cyclone is a large scale air mass that rotates around a strong center of low atmospheric pressure . Cyclones are characterized by inward spiraling winds that rotate about a zone of low pressure . The largest low-pressure systems are polar vortices and extratropical cyclones of the largest scale (the synoptic scale ). Warm-core cyclones such as tropical cyclones and subtropical cyclones also lie within the synoptic scale. Mesocyclones , tornadoes and dust devils lie within smaller mesoscale, Upper level cyclones can exist without the presence of a surface low, and can pinch off from the base of the tropical upper tropospheric trough during the summer months in the Northern Hemisphere . Cyclones have also been seen on extraterrestrial planets, such as Mars and Ne...