Title: Comparison Influencing of El-Nino Southern Oscillation and Indian Ocean Dipole on Rainfall Variability During the Asian Winter and Summer Monsoon Over Indonesian Maritime Continent
Abstract: The Indian Ocean Dipole (IOD) and El-Nino Southern Oscillation (ENSO) are part of the atmospheric phenomena that considerably influence rainfall variability in Indonesia. This study has reported the impact of ENSO and IOD on Indonesian rainfall variability when they interact with each other. This analysis uses daily rainfall data from Aphrodite, sea surface temperature (SST), horizontal wind, Ocean Nino Index (ONI) index, and IOD index from 1961 to 2010. The results of this study indicate that the effect of LN and NIOD that co-occurs on rainfall variability in Indonesia is more robust in the AMJJASO than in the NDJFM. The impact of LN and PIOD simultaneously on rainfall is more visible in the NDJFM than in the AMJJASO. The effect of NIOD on rainfall is more dominant than EN when it co-occurs in the NDJFM and the AMJJASO. The impact of NIOD + EN on rain in Java is more significant during AMJJASO than during NDJFM. Events of PIOD and EN that co-occur will cause drought in almost all of Indonesia, and a high decrease in rainfall will occur on the island of Java during AMJJASO. The influence of LN on rainfall is more dominant than NetIOD during NDJFM and AMJJASO. The effect of LN + NetIOD on increasing rainfall in Indonesia is higher during AMJJASO than during NDJFM. The impact of EN, when it co-occurs with NetIOD, on the increase in rainfall in Sumatra is higher during NDJFM than during AMJJASO. The influence of PIOD and NetENSO on drought in Indonesia is quite strong if the two phenomena co-occur during AMJJASO.
Publication Year: 2023
Publication Date: 2023-01-01
Language: en
Type: book-chapter
Indexed In: ['crossref']
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