[MIS05-P06] An observational study on lightning activities over the coastal region of Sumatra, Indonesian maritime continent
As described in previous studies, diurnal cycle of lightning with clear land-sea contrast is predominant over the IMC. Frequent lightnings are observed over the Sumatra in the afternoon/evening, whereas the night/early morning peaks are predominant in the off coastal region of southern Sumatra and Malacca straight. Intra-seasonal variations of lighting are also observed in relation to the phases of MJO (Madden-Julian Oscillation). The causes of the spatial and temporal lightning variability in the coastal heavy rainfall region will be discussed by using in situ observation data. In addition, we will introduce an ongoing lightning observation project in Philippine, one of the maritime continent.