Question

1. During the five-year period, which uear had the mostnumber of tropical depressions, tropical storms, and typhoon?

2. Can you predict a three - month period when tropical cyclones will be unlikely to develop? Why?

3. What could have caused the tropical depressions not to develop into storms nor typhoons? ​

Answer 1

1.Ans A tropical cyclone is a rapidly rotating storm systemcharacterized by a low-pressure center, a closed low-level atmospheric circulation, strong winds, and a spiral arrangement of thunderstorms that produce heavy rain and/or squalls. Depending on its location and strength, a tropical cyclone is referred to by different names, including hurricane (/ˈhʌrɪkən,-keɪn/),  typhoon (/taɪˈfuːn/), tropical storm, cyclonic storm, tropical depression, or simply cyclone.

2.Ans Tropical cyclogenesis is the development and strengthening of a tropical cyclone in the atmosphere.[1] The mechanisms through which tropical cyclogenesis occurs are distinctly different from those through which temperate cyclogenesisoccurs. Tropical cyclogenesis involves the development of a warm-core cyclone, due to significant convection in a favorable atmospheric environment.

3.Ans A typhoon is a mature tropical cyclone that develops between 180° and 100°E in the Northern Hemisphere. This region is referred to as the Northwestern Pacific Basin, and is the most active tropical cyclone basin on Earth, accounting for almost one-third of the world's annual tropical cyclones. For organizational purposes, the northern Pacific Ocean is divided into three regions: the eastern (North America to 140°W), central (140°W to 180°), and western (180° to 100°E). The Regional Specialized Meteorological Center(RSMC) for tropical cyclone forecasts is in Japan, with other tropical cyclone warning centers for the northwest Pacific in Hawaii (the Joint Typhoon Warning Center), the Philippines and Hong Kong. While the RSMC names each system, the main name list itself is coordinated among 18 countries that have territories threatened by typhoons each year.