STUDY OF MESOSCALE CONVECTIVE COMPLEXES IN INDIAN OCEAN TO WEATHER PATTERN ABOVE SUMATERA ISLAND

• Main Author: (NIM : 22410002); Pembimbing : Dr. Tri Wahyu Hadi, TRISMIDIANTO
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/19589
• Institution: Institut Teknologi Bandung

Effect of Mesoscale Convective Complexes (MCC) in Indian Ocean to weather <br /> <br /> pattern above Sumatera Island were investigated using any data especially <br /> <br /> infrared(IR1) image data from Multi-functional Transport SATellite (MTSAT) and rainfall estimation data from Tropical Rainfall Measuring Mission (TRMM) and surface wind data from Cross-Calibrated Multi-Platform (CCMP) of 10-years (2000-2009) periods. The study started with identified MCC in Indian Ocean using algorithm was developed by combining several criteria of cloud coverage, eccentricity, and lifetime base on criteria from Maddox(1980). Then to detecting cold pool for MCC events do with case study which chosen two case study for MCC events, at 16 to 17 August 2005 and 27 to 28 October 2007, for two events refer to there are effects of MCC to convective activity surrounding it to causes rainfall. And finally do composite analysis for MCC events for several area in Indian Ocean. Base on spacial analysis and composite analysis were investigated, had found that MCC have significant effect to convective activity above Sumatera Island so caused rainfall above several region in Sumatera. And from detailed composite analysis for convective index and wind vector anomaly, had identified there arecold pool evidence with there are new convective which formed when maximum <br /> <br /> phase and decay phase for MCC events. For 10-years, it’s found MCC event about 553 in Samudera Hindia, so there are about 55 MCC event occurred in Samudera Hindia for every year. It is found that MCC appearences are predominantly nocturnal with an average lifetime of 12,2 hours, MCCs over the Eastern Indian Ocean appear almost in all seasons with a maximum number in March-April-May (MAM) period. Further studies are needed to understand the implications of the existence of MCC to the atmospheric <br /> <br /> dynamics and its predictability in the Maritime Continent.