ANALISIS PENGARUH MADDEN JULIAN OSCILLATION (MJO) TERHADAP ANOMALI CURAH HUJAN DI WILAYAH NGURAH RAI
Madden Julian Oscillation (MJO) is a non-seasonal wave or oscillation in the troposphere which moves from west to east with an oscillation period of approximately 30-60 days. This phenomenon influences the condition of rainfall anomaly in the region passed. This research has 8 phases of MJO which are categorized into 4 sections according to their movements namely phases 1 and 8 (Western and Africa), phases 2 and 3 (Indian Ocean), phases 4 and 5 (Maritime Continent), phases 6 and 7 (Western Pacific) . The data used in this study are rainfall data in 1996-2015 and MJO data for the same period. This research is located in Ngurah Rai. The anomaly of the rainfall is defined into positive and negative anomaly, then they are accumulated with the active MJO phases. This study aims to analyze the percentage of MJO phase groups which dominates rainfall in positive or negative anomaly. The result shows that the percentage of positive anomaly rainfall happens most in MJO phase, Maritime Continent , that is 36%. While the percentage of negative anomaly rainfall dominates at the time MJO is in the phase of Indian Ocean,33%
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