Analysis of the Meteorological Condition of Tropical Cyclone Cempaka and Its Effect on Heavy Rainfall in Java Island

Abstract

Abstract Indonesia, literally tropical cyclone free area, still gains some influence from the surrounding cyclones, such as high-intensity precipitation which causes flooding. Therefore, cyclones monitoring is important to observe its growth, movement and intensity. Using ECMWF ERA-Interim data, Himawari-8 channel infrared 1 (IR1), and GSMaP satellite data, this study attempts to spatially analyze the evolution of Cempaka tropical cyclones (occurred on November 2017), propagation cyclone and its effect to rainfall over Java Island based on the brightness temperature of the cloud. The results show that the Cempaka tropical cyclone has a three-day life span and moves from the southern ocean of Central Java to the northeast (East Java) and the peak occurs on November 27th, 2017 at 19:00 LT to 23:00 LT. Compared to rainfall data, the intensity of rainfall at 7 areas closed to Cempaka tropical cyclone began to increase ever since the cyclone peak and continue to rise despite the cyclone was slowly decaying. With this result, we hope in the future we can anticipate the impact of any tropical cyclones that arise near Indonesia.