It is the area of lowest atmospheric pressure in the region.ropical cyclones form due to latent heat driven by significant thunderstorm activity, and are warm core.
Tropical Cyclones are low pressure systems that form over warm tropical waters and have gale force winds (sustained winds of 63 km/h or greater and gusts in excess of 90 km/h) near the centre. These are referred to as hurricanes or typhoons in other countries. The circular eye or centre of a tropical cyclone is an area characterised by light winds and often by clear skies. Eye diameters are typically 40 km but can range from under 10 km to over 100 km. In other parts of the world they are called hurricanes or typhoons. Tropical cyclones can cause significant phenomena which can adversely, and sometimes favourably impact on communities and the environment. The most common features are destructive winds and heavy rainfall that can lead to flooding. A tropical cyclone is a low-pressure system which develops in the tropics and is sufficiently intense to produce sustained gale force winds of at least 63km/h. There are a number of structural characteristics common to all cyclones. A cyclone is a low-pressure area. A cyclone's center (often known in a mature tropical cyclone as the eye), is the area of lowest atmospheric pressure in the region. Tropical cyclones form due to latent heat driven by significant thunderstorm activity, and are warm core. Cyclones can transition between extratropical, subtropical, and tropical phases under the right conditions. Tropical cyclogenesis describes the process of development of tropical cyclones. Tropical cyclones form due to latent heat driven by significant thunderstorm activity, and are warm core. Cyclones can transition between extratropical, subtropical, and tropical phases under the right conditions. Mesocyclones form as warm core cyclones over land, and can lead to tornado formation. Waterspouts can also form from mesocyclones, but more often develop from environments of high instability and low vertical wind shear A tropical cyclone is a rapidly rotating storm system characterized by a low-pressure center, strong winds, and a spiral arrangement of thunderstorms that produce heavy rain. Tropical cyclones out at sea cause large waves, heavy rain, flood and high winds, disrupting international shipping and, at times, causing shipwrecks. Tropical cyclones stir up water, leaving a cool wake behind them, which causes the region to be less favorable for subsequent tropical cyclones. This means that hurricanes, typhoons and tornadoes are all types of cyclones. What makes each cyclone unique is its location. Tornadoes occur over land, polar cyclones occur in polar regions and tropical cyclones occur over tropical oceans. What's not unique is how these storms develop. Warm air rises, and it likes to take water along with it. When that warm, moist air rises quickly, we get an updraft. Types of Cyclones. The term 'cyclone' actually refers to several different types of storms. They occur in different places, and some occur over land while others occur over water. What they all have in common is that they are spinning storms rotating around that low-pressure center. Cyclone seen from Space. A tropical cyclone is a low-pressure system which develops in the tropics and is sufficiently intense to produce sustained gale force winds of at least 63km/h. If the sustained wind reaches hurricane force of at least 118km/h the system is defined as a severe tropical cyclone. A tropical cyclone is a low-pressure system which develops in the tropics and is sufficiently intense to produce sustained gale force winds of at least 63km/h
http://www.bom.gov.au/cyclone/about/ http://www.ga.gov.au/scientific-topics/hazards/cyclone/basics/what https://en.wikipedia.org/wiki/Cyclone https://en.wikipedia.org/wiki/Cyclone https://en.wikipedia.org/wiki/Tropical_cyclone http://study.com/academy/lesson/what-are-cyclones-types-causes-effects.html http://www.ga.gov.au/scientific-topics/hazards/cyclone/basics/what
what causes cyclones