Journal of Physics: Theories and Applications
Vol 2, No 2 (2018): Journal of Physics: Theories and Applications

Utilization of estimated rainfall as an early warning system before flash flood event

Fara Diva Claudia (School of Meteorology, Climatology, and Geophysics (STMKG) Jl. Perhubungan 1 No 5 South Tangerang Banten)
Cecylia Putri Mawarni (School of Meteorology, Climatology, and Geophysics (STMKG) Jl. Perhubungan 1 No 5 South Tangerang Banten)
Kadek Krisna Yulianti (School of Meteorology, Climatology, and Geophysics (STMKG) Jl. Perhubungan 1 No 5 South Tangerang Banten)
Paulus Agus Winarso (School of Meteorology, Climatology, and Geophysics (STMKG) Jl. Perhubungan 1 No 5 South Tangerang Banten)



Article Info

Publish Date
30 Sep 2018

Abstract

On October 10, 2018 there has been extreme weather in the form of heavy rain accompanied by lightning in Tanah Datar District, West Sumatra. This extreme weather caused flash floods and landslides that killed many people. Therefore, by using remote sensing data in the form of radar and satellite as well as WRF modeling (Weather Research and Forecasting) the authors conducted analysis of heavy rainfall events to determine the estimated rainfall and atmospheric dynamics during the occurrence of flash floods and landslides. WRF modeling is used to determine the condition of atmospheric lability. For the calculation of rainfall estimation, the method used is the Convective Stratiform Technique (CST) method that utilizes satellite data and the Z-R relation selection method that utilizes radar data. Then the calculation results from each method are verified using observation data. Relative bias shows the CST method and the selection of Z-R relations tend to be overestimate, but has a very high correlation value with observation data. Information on rainfall estimation and atmospheric dynamics is expected to be used to provide early warnings aimed at minimizing losses from the impact of disasters.

Copyrights © 2018






Journal Info

Abbrev

jphystheor-appl

Publisher

Subject

Education Materials Science & Nanotechnology Physics

Description

Journal of Physics: Theories and Applications (cited as J. Phys.: Theor. Appl.) is a peer-reviewed and open access journal, which is published twice a year by Physics Department, Sebelas Maret University. The journal is designed to serve researchers, developers, professionals, graduate students and ...