Preliminary study on validation of HIMAWARI-8 data with ground based rainfall data at South Sumatera, Indonesia

Abstract

An accurate rainfall data has an important role in the Indonesia Fire Danger Rating System (Ina-FDRS) which has been developed by PTPSW – BPPT since 2017. Continuing the previous study, during wet and dry season, an accurate rainfall data becomes one of the important inputs and has big impact on the Ina-FDRS. Unfortunately, surface rainfall data from AWS and ARG have limited availability especially on the spatial resolution data, therefore Ina-FDRS will use HIMAWARI-8 rain rate data as an input. On the other hand, satellite rainfall data also has limitation on the accuracy, HIMAWARI-8 detects top cloud temperature, then by using IMSRA method to calculate rainfall values. This preliminary study aims to validate rain rate from HIMAWARI-8 satellite image data with ground-based rainfall data from AWS/ARG during fire and non-fire period, from 1 – 31 August 2015 and 15 April – 15 May 2018. Afterward, we will use the validated rainfall data as an input for Ina-FDRS.

Utilisation of Nasa - Gfwed and Firms Satellite Data in Determining the Probability of Hotspots Using the Fire Weather Index (Fwi) in Ogan Komering Ilir Regency, South Sumatra

“…The JJA season is characterised by low rainfall, low humidity and high temperatures, resulting in the increase from high to extreme FWI and FFMC. Low rainfall during August was recorded in the study by Meliani et al (2020). Compared to rainfall in April, in August it is considerably lower.…”