meaning of tropical cyclone?

Answer 1

First, I will define a "cyclone". Then I will give the reason why some are called "tropical".

A "cyclone" is a very basic term and is just an area of relatively low pressure at any level (surface, mid-level, or upper level) of the atmosphere with winds circulating around the center of the low. The flow circulating around the low should be closed at least in areas that are nearest to the center of the low. A cyclone can occur just about anywhere on this planet as long as it fits the above general definition.

Some of these cyclones are called tropical cyclones. A tropical cyclone must fit the following criterias:

1. Temperature of the Core...A tropical cyclone must be a warm core low pressure system. Unlike the winter low pressure systems where as you move closer to the center of the low, the temperature gets colder. A tropical system, as you move toward the center, it gets relatively warmer.

2. Fronts...A tropical system has no synoptic type of fronts. For example, you will never see a hurricane with a warm or cold front attached from the center of the low or eye of the storm and extending out away the center. In other non-tropical systems, you generally see cold, warm, stationary, or occluded fronts associated with these types of lows.

3. Location of Strongest Winds...A tropical cyclone will have the strongest winds at the lower levels of the atmosphere or near the surface. A non-tropical cyclone will likely have the strongest winds aloft or in the mid to upper levels of the atmosphere.

Also with tropical cyclones, the winds that moves around the low pressure system are strongest near the center of the low (usually just along and a short distance outside of the eyewall.

4. Jet Stream...A topical cyclone are not associated with a strong jet stream. A non-tropical cyclone are likely associated with an upper level jet.

So you may say a tropical is a special kind of cyclone, but not all cyclones are tropical.

Answer 2

Large levels of evaporation means that a large amount of water vapor rises and eventually condensed in the lower Temperature at the higher altitude. The condensed water will eventually precipitate as rain, snow or hail. It is related to tropical cyclones because tropical cyclone, often than not, bring rain or any storm related weather.

Answer 3

the tropical cyclones originate in the sea at low pressure area. these are formed in the mid latitudes 23*n/s.23*n is tropic of cancer n 23* s is tropic of capricorn.thus are called as tropical cyclones.
the extra-tropical cyclones which are formed at 40* latitude.

Answer 4

More specifically, a tropical cyclone is a low pressure area that has no fronts associated with it, is over tropical or sub-tropical water, and has organized shower and thunderstorm activity.

Answer 5

A cyclonic storm which originates and spends most of its life time over tropical zone,i.e.,between 23.5 degrees N and S latitudes.However they do not form within 7 degree latitudes on both sides of the equator as coriolis force is too weak here to deflect the storms .