Migration of Tropospheric Precipitation Over Sumatra as Revealed by the Global Precipitation Measurement Dual-Frequency Precipitation Radar Observation

This study examines the migration of tropospheric rainfall over Sumatra using Global Precipitation Measurement (GPM) dual-frequency precipitation radar observations. The study focuses on the cross-sectional analysis of rainfall migration over Sumatra, considering different altitudes and rain types, such as stratiform and convective. It utilizes GPM dual-frequency radar data and explores the hourly patterns of rainfall migration. The findings reveal distinct migration patterns for stratiform and convective rain, with rainfall moving from coastal areas to offshore and inland regions during the night. The migration patterns are more pronounced at higher altitudes, influenced by diurnal zonal wind patterns in the upper-level troposphere. Convective rain displays higher rainfall intensity due to larger raindrop diameters, and upper-level cloud systems play a significant role in shaping rainfall patterns in the region. Overall, this research enhances our understanding of the complex dynamics of land-sea rainfall migration over Sumatra, with implications for climate modeling, weather forecasting, and resource management.