Based on data sets of tropical cyclone tracks in the period of 1945-2000 of Hurricane Data Archives from http://www.unisys.com, the activity of tropical cyclones (TCs) in the Northwest Pacific basin and Bien Dong sea is investigated with respect to the ENSO phases and intensity of TCs. The intensity of tropical cyclones is divided into two classes: TCs that reach the intensity of tropical depression and tropical storm (weak TCs), and TCs that reach the intensity of typhoon (intense TCs). The results showed that, ENSO events influence frequency of occurrence anầ the genesis location of TCs. In general, the TCs occuĩTed and generated in Bien Dong sea are increased during the La Nina years and decreased during the El Nino years, in number. During the El Nino (La Nina) phases, the genesis locations of tropical cyclones displace toward to the East (West). Further' more, the genesis locations of tropical cyclones in the Bien Dong sea tend to the North, while in Northwest Pacific basin tend to the South, (hiring the El Nino phases.
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Based on data sets of tropical cyclone tracks in the period of 1945-2000 of Hurricane Data Archives from http://www.unisys.com, the activity of tropical cyclones (TCs) in the Northwest Pacific basin and Bien Dong sea is investigated with respect to the ENSO phases and intensity of TCs. The intensity of tropical cyclones is divided into two classes: TCs that reach the intensity of tropical depression and tropical storm (weak TCs), and TCs that reach the intensity of typhoon (intense TCs). The results showed that, ENSO events influence frequency of occurrence anầ the genesis location of TCs. In general, the TCs occuĩTed and generated in Bien Dong sea are increased during the La Nina years and decreased during the El Nino years, in number. During the El Nino (La Nina) phases, the genesis locations of tropical cyclones displace toward to the East (West). Further' more, the genesis locations of tropical cyclones in the Bien Dong sea tend to the North, while in Northwest Pacific basin tend to the South, (hiring the El Nino phases.
