The spatial variation of probable maximum precipitation and its relations to topography in Ciliwung-Citarum River basin

Abstract

The objective of this research is to estimate Probable Maximum Precipitation (PMP) using satellite data, as one of the solutions to the lack of observation data, and to know the representativeness of satellite data used. The Tropical Rainfall Measuring Mission (TRMM) incredibly defined the spatial variation of PMP. The north area of Subang Regency has the highest PMP value compared to the surrounding areas for duration of 3, 6, 9, 12, 18 and 24 hours. This phenomenon is due to the control of topography against extreme conditions. The PMP itself is generally used to determine the Probable Maximum Flood (PMF) value. The PMP-PMF concept can be utilized for flood management, the determination of temporary retention areas and spillways design reference on dams.The objective of this research is to estimate Probable Maximum Precipitation (PMP) using satellite data, as one of the solutions to the lack of observation data, and to know the representativeness of satellite data used. The Tropical Rainfall Measuring Mission (TRMM) incredibly defined the spatial variation of PMP. The north area of Subang Regency has the highest PMP value compared to the surrounding areas for duration of 3, 6, 9, 12, 18 and 24 hours. This phenomenon is due to the control of topography against extreme conditions. The PMP itself is generally used to determine the Probable Maximum Flood (PMF) value. The PMP-PMF concept can be utilized for flood management, the determination of temporary retention areas and spillways design reference on dams.