Tuesday, May 10, 2011

2.5

  1. A tropical cyclone is a storm system characterized by a large low-pressure center and numerous thunderstorms that produce strong winds and heavy rain. Tropical cyclones feed on heat released when moist air rises, resulting in condensation of water vapor contained in the moist air






  2. OCEAN BASIN










    SEASON










    AVERAGE CYCLONES
    PER SEASON











    (winds above 63 km/h)










    PERCENTAGE OF
    GLOBAL TOTAL










    SEVERE CYCLONES
    PER SEASON











    (winds above 120 km/h)
    North Indian May to June & October to December









    5.4










    7%










    2.5
    Northwest Pacific Mainly June to December









    25.7










    31%










    16.0
    Northeast Pacific May to November









    16.5










    20%










    8.9
    North Atlantic June to November









    9.7










    11%










    5.4
    Southwest Indian December to April









    10.4










    12%










    4.4
    Southeast Indian/Aust December to April









    6.9










    8%










    3.4
    Southwest Pacific November to April









    9.0










    11%










    4.3
  3. Queensland
  4. 10
  5. Typhoons, Hurricanes
  6. Tropical cyclones develop in the Tropical regions of the world. Heat from the sun causes warm,High air to rise into the atmosphere. As the air rises, a low pressure system forms and condensation occurs, which releases latent heat causing the air to rise further into the atmosphere. If the air pressure in the upper atmosphere is Moist , then the rising column of warm air will Spiral outwards in the upper atmosphere and air will rush from the Surface to replace it, forming a tropical cyclone.
  7. Is the centre of the storm and it is calm and has clear eyes
  9. If they arn't intense enough
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