ANALYSIS OF MADDEN JULIAN OSCILLATION (MJO) EVENT IN WESTERN PART OF INDONESIA IN ASIAN WINTER MONSOON AND ITS IMPACT ON RAINFALL

• Main Author: HAIRUNNISA NORFAHMI (12811026), SITI
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/24325
• Institution: Institut Teknologi Bandung

Indonesia Maritime Continent is an archipelago in ekuator which affected by many atmospheric phenomenons, include MJO and Monsoon. Asian Winter Monsoon causes the increasing of rainfall in several places in Indonesia in December-January-February (DJF), and since MJO related to a propagation of convective cloud, somehow it affects the rainfall variability in Ekuator, especially Indonesia. Interaction of both phenomenons simultaneously brings rainfall increasing in Indonesia, especially in Western Part of Indonesia. Therefore, a research about the impact of MJO in rainfall especially in Western Part of Indonesia is necessary. <br /> <br /> <br /> <br /> <br /> This study aims to observe the impact of MJO events on the rainfall variability in Western Part Indonesia focused on Asian Winter Monsoon (December-January-February/DJF) by analyzing the pattern of rainfall variability in Western Part of Indonesia, identifying MJO in Asian Winter Monsoon period in DJF 2002/03 – DJF 2012/13, and analyzing the impact of MJO to the rainfall. <br /> <br /> <br /> <br /> <br /> The resulst show that from 10 MJO evenst in period DJF 2002/03 – DJF 2012/13, the event increased the rainfall continuously in phase 3, phase 4, and phase 5. In phase 3, the increasing happened in every stations except Supadio with the total precipitation > 30 mm/day. The condition of rainfall in phase 4 is fluctuative in every stations, but with the dominant incrasing in Equator. In phase 5, the decreasing of rainfall happened in North of the Equator and Equator, while in South of Equator, the rainfall in Cengkareng Station increased about 20% but decreased about -42% in Bandung Station.