Mesoscale Convective Complexes (MCCs) over the Indonesian Maritime Continent during the ENSO events

摘要

This study analyzed the mesoscale convective complexes (MCCs) over the Indonesian Maritime Continent (IMC) during the El Nino/Southern Oscillation (ENSO) events for the the15-year period from 2001 to 2015. The MCCs identified by infrared satellite imagery that obtained from the Himawari generation satellite data. This study has reported that the frequencies of the MCC occurrences at the El Nino and La Nina were higher than that of neutral conditions during DJF. Peak of MCC occurrences during DJF at La Nina and neutral condition is in February, while El Nino is in January. ENSO strongly affects the occurrence of MCC during the DJF season. The existences of the MCC were also accompanied by increased rainfall intensity at the locations of the MCC occurrences for all ENSO events. During JJA seasons, the MCC occurrences are always found during neutral conditions, El Nino and La Nina in Indian Ocean. MCC occurring during the JJA season on El Nino and neutral conditions averaged much longer than during the DJF season. In contrast, MCCs occurring in La Nina conditions during the JJA season are more rapidly extinct than during the DJF. It indicates that the influence of MCC during La Nina during the DJF season is stronger than during the JJA season.