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Cyclone

Large scale air mass that rotates around a strong center of low pressure

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Cyclone: Large scale air mass that rotates around a strong center of low pressure
In meteorology, a cyclone is a large air mass that rotates around a strong center of low atmospheric pressure, counterclockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere as viewed from above. 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. 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, Jupiter, and Neptune. Cyclogenesis is the process of cyclone formation and intensification. Extratropical cyclones begin as waves in large regions of enhanced mid-latitude temperature contrasts called baroclinic zones. These zones contract and form weather fronts as the cyclonic circulation closes and intensifies. Later in their life cycle, extratropical cyclones occlude as cold air masses undercut the warmer air and become cold core systems. A cyclone's track is guided over the course of its 2 to 6 day life cycle by the steering flow of the subtropical jet stream.

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Cyclone Mandous wrecks havoc in TN | What are the do's and dont's to follow | Oneindia News *News [Video]

Cyclone Mandous wrecks havoc in TN | What are the do's and dont's to follow | Oneindia News *News

Cyclone Mandous has weakened into a deep depression. The deep depression over north Tamil Nadu moved nearly west-southwestwards with a speed of 9 kmph during the past 6 hours and lay centered at 8.30am..

Credit: Oneindia     Duration: 03:01Published
Cyclone Mandous leaves Chennai roads waterlogged, uproots trees | Oneindia News *News [Video]

Cyclone Mandous leaves Chennai roads waterlogged, uproots trees | Oneindia News *News

Cyclone Mandous made landfall around 10.30 pm on Friday and crossed the coast near Mamallapuram i.e. Mahabalipuram in Tamil Nadu, between Puducherry and Sriharikota, around 1.30 am. Heavy winds with..

Credit: Oneindia     Duration: 03:01Published

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