By Lianshou Chen
The author is Professor, Chinese Academy of Meteorological Sciences, Beijing, China.
Tropical cyclones (TC) in the northern Indian Ocean (NIO) have several prominent characteristics as compared to storms in other ocean basins of the world, especially in their genesis, structure, disaster and impact. TCs in the NIO show peak periods twice in a year, never demonstrate extra-tropical transition (ET), and result in higher storm surges than anywhere else in the world.
Tropical cyclones (TCs) actively form in different ocean basins of the globe and have different characteristics. Typhoons in the western North Pacific are most frequent in genesis, and the annual number of TCs beyond storm intensity in this basin is maximum as compared to other basins of the world. Most typhoons are generated from the inter-tropical convergence zone (ITCZ) or monsoon trough. Super or midget typhoons, typhoons with extra tropical transition and erratic track typhoons can often be found in...