Abstract
Cyclogenesis of tropical storms has not yet been completely understood, but these storms develop over five major zones in the Northern hemisphere. Bay of Bengal (BoB) and the Arabian Sea are two such zones. Cyclones, tropical disturbances of all intensities with reference to wind speed greater than 33 knots, form in the BoB and in the Arabian Sea almost throughout the year. They are more frequent in the Bay and in Arabian Sea in the region between latitude 6°N and 15°N during the pre-monsoon and post-monsoon seasons and are least frequent during the winter. Tropical cyclone formation involves interaction of a variety of processes, both on the synoptic scale as well as the mesoscale. Gray (1979) identified several large-scale conditions as necessary for tropical cyclogenesis, including preexisting low-level relative vorticity and high mid-tropospheric humidity. Chen and Frank (1993) noted that mesoscale convective vortices (MCVs) spawned by tropical convection could be a possible mechanism for forming the initial low-level relative vorticity maximum. This variety of tropical cyclogenesis mechanisms provides a challenge in identifying the sufficient conditions for genesis.
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Durai, V.R., Bhowmik, S.K.R. (2014). Real-Time Prediction of the Tropical Cyclogenesis Location over Bay of Bengal Using Global Forecast System (GFS). In: Mohanty, U.C., Mohapatra, M., Singh, O.P., Bandyopadhyay, B.K., Rathore, L.S. (eds) Monitoring and Prediction of Tropical Cyclones in the Indian Ocean and Climate Change. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-7720-0_25
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