Influence of Enso to Variability of Rain Chain at Tropical Cyclon in Southern East Nusa Tenggara

Candra Febryanto Patandean(1*),

(1) Meteorology, Climatology And Geophysics Agency IV Makassar
(*) Corresponding Author



The Region of East Nusa Tenggara province which is geographically situated around Equator is an area immediately adjacent to place where the growth of tropical cyclones. This research to determine the variability of tropical cyclones that have happened, how the influence of ENSO on the variability of tropical cyclones, and how the impact of tropical cyclones on rainfall in East Nusa Tenggara. In this study, the rainfall data used is represented by 8 stations observations in the region of NTT, namely Kupang, Rote, Sabu, Waingapu, Ruteng, Maumere, Larantuka, and Alor, with period of 19 years ie the assessment year 1996-2014.  The data was obtained from Era Interim ECMWF. Tropical cyclone data was obtained from JTWC-Japan and TCWC-Australia, covering a maximum sustained wind data, position, and lifetime cyclone. Rainfall data obtained from Climatological Station of Lasiana-Kupang. Results of the analysis showed that during the study period the total incidence of tropical cyclones in the south of East Nusa Tenggara many as 113 cases, with an average of 6 events cyclones per year and were distributed mainly in the winter between November and April.  The results also show that ENSO influence on tropical cyclone variability indirectly to the parameter  of tropical cyclones.



Tropical cyclone; ENSO; Precipitation; Atmospheric Dynamics.

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