Once air has been set in motion by the pressure gradient force, it undergoes an apparent deflection from its path, as seen by an observer on the earth. This apparent deflection is called the "Coriolis force" and is a result of the earth's rotation.
In the Northern Hemisphere Coriolis deflects to the right and in the Southern Hemisphere to the left. That's why a tropical cyclone can't cross from one hemisphere into another.
It's strongest at the North and South Poles and nonexistent at the equator. That's why tropical cyclones form away from the equator.
2006-10-31 23:16:03
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answer #1
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answered by Yak Rider 4
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Tropical cyclones are intense depressions which develop in tropical oceans. They form over warm water (in excess of 28 deg. C) and weaken when they move over land. A cyclone starts as a tropical disturbance and required the Coriolis force to develop the balanced circulation flow. The coriolis force is caused by the rotation of the earth, the root cause of all wind on the planet.
2006-10-31 18:16:51
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answer #2
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answered by Anonymous
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Tornadoes, dirt devils, hurricanes, and cyclones are all warmth convection mechanisms. they oftentimes form round an portion of low air stress over an excellent section or in a smaller scale portion of low air stress referred to as a meso-cyclone. i'm no longer particular when you're asking about tropical cyclones or no longer. Like hurricanes, see you later as their is warmth water to grant a warmth source, a tropical cyclone is a warmth convection comments mechanism that grows see you later as there's a warmth source accessible surrounded through cooler, extreme stress air. once a typhoon or tropical cyclone strikes into shallower water, there's a lot less warmth to gas the comments mechanism, or perhaps a lot less warmth once the middle of the low air stress equipment strikes over land. The critical air stress of typhoon rises because the typhoon cyclone weakens and the warm temperature convection dissipates. A tornado's warmth source will be as small as a concrete or asphalt street that has heated up in the course of the day and is re-radiating warmth back into the ambience after the solar instruments. i do not understand what percentage cases i have watched a tornado or tornadoes bypass backward and forward for the era of I-40 4 between Oklahoma city and Tulsa on radar on television. that's a unprecedented social gathering of ways a incredibly a small section like a street can create its personal micro-climate.
2016-10-16 07:08:33
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answer #3
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answered by predmore 4
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low central area of pressure, the warm sea water, air circulation. a hurricane/tropical cyclones is a mass of organized thunderstorms=)
2006-10-31 18:00:38
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answer #4
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answered by Anonymous
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first warm ocean water, moist air, wind shear below 20 knots,
2006-11-01 08:35:51
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answer #5
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answered by Anonymous
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i'm no scientist, but i'm pretty sure it has something to do with wind and temperature. dah
2006-10-31 18:00:14
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answer #6
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answered by Devilman 3
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sea is very warm
2006-10-31 17:58:57
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answer #7
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answered by q6656303 6
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convection and circulation
2006-11-01 05:16:49
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answer #8
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answered by Justin 6
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