REMOTE EFFECT OF TROPICAL CYCLONE OVER SOUTHERN OF INDONESIA MARITIME CONTINENT

• Main Author: EFFENDI (NIM: 22412308); Pembimbing : Dr. Nurjanna Joko Trilaksono, RISMANTO
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/20462
• Institution: Institut Teknologi Bandung

Maritime Continent of Indonesia (MCI) generally not through by TC, so influenced by the remote effect mainly on rain events. Characteristics and remote effects TC assessed using TC historical data taken from the BoM and JTWC around MCI. To simplify the analysis, area of study was divided into four region (region I: 80 ° E - 107 ° E and 8 ° S - 20 ° S, region II: 107 ° E - 132 ° E and 10 ° S - 24 ° S, region III: 132 ° E - 142 ° E and 10 ° S - 19 ° S, and region IV: 142 ° E - 170 ° E and 10 ° S - 25 ° S) based on the average event of TC period 1969-2006 from BoM. To determine the effect of TC analyzed rainfall anomalies, low-level vertical integrated moisture transport (VIMT) and cross equatorial total energy as a discussion. In the years 2004 until 2013, there were 574 TC around the southern of MCI with the highest frequency occurred in March that caused the lower layers of the wind patterns and random weakened resulting wind shear and convergence that trigger the growth of cyclonic vortex. In the analysis of the case studies, TC Fay cause rain with moderate to heavy in some areas, but TC category 2 (phase attenuation) to extinction, the intensity of rainfall in the southern MCI became lighter. While the case studies of TC Ivy, in the southern of MCI generally cause light to moderate rainfall intensity in each category TC. Climatology of TC analysis showed that the event of TC in regions I and IV on MAM period does not affect rainfall in southern of MCI. At TC events in region III in the MAM period occurs negative anomaly of rainfall caused by the neutral point due to the vortex in the west of Sumatra and the Gulf of Carpentaria. In the region and other periods, there was an additional dominant rainfall is generally due to the confluence of the moisture transport from the Indian Ocean west of Australia and west of Sumatra as well as the influence of moisture transport which extends from the eye wall of TC system towards MCI.