what is cyclone? how it occurs
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a system of winds rotating inward to an area of low atmospheric pressure, with a counterclockwise (northern hemisphere) or clockwise (southern hemisphere) circulation; a depression.
The spinning circulation of strong ocean waves are called a cyclone or hurricane. Cyclone occur as a result of warm climate mixing with cold climate. When evaporation of moisture takes place due to heat, it gets trapped in the atmosphere. More and more of this vapour keeps gathering until it's volume becomes too large. This causes cyclone. They can be very destructive.
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"Cyclone" usually refers to an extra-tropical (non-tropical) cyclone, which is a low pressure area that forms near the boundary between warm and cool air masses. (It alternatively refers to ahurricane that forms in the Indian Ocean).
As depicted in the illustrations above and below, the cyclone grows in size and intensity as it draws on the energy that is available from the temperature contrast between the two air masses. The leading edges of the air masses that are moving are called fronts. The imaginary line where the warm air meets the cold air at the surface in advance of the low pressure center is called a warm front. Where the cold air advances upon the warm air is called a cold front.
•how it occurs?
Formation Main article: Cyclo genesis Cold-core cyclones (most cyclone varieties) form due to the nearby presence of an upper level trough, which increases divergence aloft over an area that induces upward motion and surface low pressure. Warm-core cyclones (such as tropical cyclones and many mesocyclones) can have their initial start due to a nearby upper trough, but after formation of the initial disturbance, depend upon a storms relative upper level high to maintain or increase their strength.
Each of the six main types of cyclone has further characteristics which define it as either a Polar cyclone, Polar low, Extra tropical, Subtropical, Tropical, or Mesoscale.
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As depicted in the illustrations above and below, the cyclone grows in size and intensity as it draws on the energy that is available from the temperature contrast between the two air masses. The leading edges of the air masses that are moving are called fronts. The imaginary line where the warm air meets the cold air at the surface in advance of the low pressure center is called a warm front. Where the cold air advances upon the warm air is called a cold front.
•how it occurs?
Formation Main article: Cyclo genesis Cold-core cyclones (most cyclone varieties) form due to the nearby presence of an upper level trough, which increases divergence aloft over an area that induces upward motion and surface low pressure. Warm-core cyclones (such as tropical cyclones and many mesocyclones) can have their initial start due to a nearby upper trough, but after formation of the initial disturbance, depend upon a storms relative upper level high to maintain or increase their strength.
Each of the six main types of cyclone has further characteristics which define it as either a Polar cyclone, Polar low, Extra tropical, Subtropical, Tropical, or Mesoscale.
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