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Cekarus, Joseph Damian
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Humanities Earth & Planetary Sciences Education Environmental Science Social Sciences

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Analisis Dinamika Atmosfer Kejadian Hujan Lebat Di Surabaya 30 Maret 2023 Cekarus, Joseph Damian; Muhammad Ariel Taufik Muharram; Yosafat Donni Haryanto
JPIG (Jurnal Pendidikan dan Ilmu Geografi) Vol. 10 No. 1 (2025): Maret
Publisher : Geography Education Study Program, Universitas Kanjuruhan Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21067/jpig.v10i1.9733

Abstract

On March 30, there was heavy rain with an intensity of 25 mm/hour. Heavy rains are caused by cumulonimbus convective cloud activity. This cloud activity can be analyzed by utilizing Himawari-8 satellite remote sensing with RGB, CCO, and using the upper air observation method with radiosonde at 00 UTC in the Surabaya area. The purpose of this research is to identify heavy rain in some areas of Surabaya according to some news in the area. The results of observations from the RGB method occurred cloud conditions resulting in high heavy rain. The observation results of the CCO method occurred convective clouds at the time of the heavy rain event with high intensity. The results of observations of upper air observations with radiosonde at 00 UTC showed an atmospheric stability index indicating a chance of extreme weather in the Surabaya area. In addition, based on ECMWF Copernicus reanalysis data, there is a warm and humid airflow from the Java Sea to the mainland which causes cloud formation and heavy rain. In addition, a negative value of divergence is obtained and the humidity value reaches 80%. This shows that the analysis using the RGB method, CCO, radiosonde data, and Copernicus ECMWF reanalysis data are compatible and support each other.
Analisis Dinamika Atmosfer Kejadian Banjir Di Bali (Studi Kasus: Kuta, Badung 3 April 2024) Cekarus, Joseph Damian; Jerremy Mezac Sopacua; Yosafat Donni Haryanto
JPIG (Jurnal Pendidikan dan Ilmu Geografi) Vol. 10 No. 1 (2025): Maret
Publisher : Geography Education Study Program, Universitas Kanjuruhan Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21067/jpig.v10i1.10493

Abstract

Very heavy rain that causes flooding has an intensity of up to 129 mm/hour in Kuta District, Badung Regency on April 03, 2024 caused by cumulonimbus convective cloud activity. This cloud activity can be analyzed by utilizing Himawari-8 satellite remote sensing with NWP and RGB methods processed with the SATAID application. This study aims to identify very heavy rain in the Kuta District area of Badung Regency which resulted in flooding. This research is an analytical descriptive research that uses secondary data from Himawari-8 satellite remote sensing results, flight documentation analysis, and atmospheric lability index data. The methods used include Numerical Weather Prediction (NWP) and Red-Green-Blue (RGB) analysis to support the identification of extreme weather phenomena. The results of the flight documentation show that there is a lowpressure pattern in the southeast region of Bali and wind turns in the Bali region and convergence in the South Bali sea. Clouds began to form at 21:20 UTC and began to cover and reached its peak at 21:50 UTC. High rainfall conditions are caused by the formation of convective clouds and evenly distributed clouds. With the RGB method, high and thick cumulonimbus clouds were observed. Based on atmospheric lability index data, namely K Index (KI), Lifted Index (LI), Total-totals Index (TTI), Severe Weather Threat Index (SWEAT), and Convective Available Potential Energy Index (CAPE), the value is quite supportive when the very heavy rain occurs. This shows that the analysis using the NWP method, RGB method, and some flight documentation data have compatibility and support each other.
Analisis Dinamika Atmosfer Kejadian Hujan Lebat Di Surabaya 30 Maret 2023 Cekarus, Joseph Damian; Muhammad Ariel Taufik Muharram; Yosafat Donni Haryanto
JPIG (Jurnal Pendidikan dan Ilmu Geografi) Vol. 10 No. 1 (2025): Maret
Publisher : Geography Education Study Program, Universitas Kanjuruhan Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21067/jpig.v10i1.9733

Abstract

On March 30, there was heavy rain with an intensity of 25 mm/hour. Heavy rains are caused by cumulonimbus convective cloud activity. This cloud activity can be analyzed by utilizing Himawari-8 satellite remote sensing with RGB, CCO, and using the upper air observation method with radiosonde at 00 UTC in the Surabaya area. The purpose of this research is to identify heavy rain in some areas of Surabaya according to some news in the area. The results of observations from the RGB method occurred cloud conditions resulting in high heavy rain. The observation results of the CCO method occurred convective clouds at the time of the heavy rain event with high intensity. The results of observations of upper air observations with radiosonde at 00 UTC showed an atmospheric stability index indicating a chance of extreme weather in the Surabaya area. In addition, based on ECMWF Copernicus reanalysis data, there is a warm and humid airflow from the Java Sea to the mainland which causes cloud formation and heavy rain. In addition, a negative value of divergence is obtained and the humidity value reaches 80%. This shows that the analysis using the RGB method, CCO, radiosonde data, and Copernicus ECMWF reanalysis data are compatible and support each other.
Analisis Dinamika Atmosfer Kejadian Banjir Di Bali (Studi Kasus: Kuta, Badung 3 April 2024) Cekarus, Joseph Damian; Jerremy Mezac Sopacua; Yosafat Donni Haryanto
JPIG (Jurnal Pendidikan dan Ilmu Geografi) Vol. 10 No. 1 (2025): Maret
Publisher : Geography Education Study Program, Universitas Kanjuruhan Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21067/jpig.v10i1.10493

Abstract

Very heavy rain that causes flooding has an intensity of up to 129 mm/hour in Kuta District, Badung Regency on April 03, 2024 caused by cumulonimbus convective cloud activity. This cloud activity can be analyzed by utilizing Himawari-8 satellite remote sensing with NWP and RGB methods processed with the SATAID application. This study aims to identify very heavy rain in the Kuta District area of Badung Regency which resulted in flooding. This research is an analytical descriptive research that uses secondary data from Himawari-8 satellite remote sensing results, flight documentation analysis, and atmospheric lability index data. The methods used include Numerical Weather Prediction (NWP) and Red-Green-Blue (RGB) analysis to support the identification of extreme weather phenomena. The results of the flight documentation show that there is a lowpressure pattern in the southeast region of Bali and wind turns in the Bali region and convergence in the South Bali sea. Clouds began to form at 21:20 UTC and began to cover and reached its peak at 21:50 UTC. High rainfall conditions are caused by the formation of convective clouds and evenly distributed clouds. With the RGB method, high and thick cumulonimbus clouds were observed. Based on atmospheric lability index data, namely K Index (KI), Lifted Index (LI), Total-totals Index (TTI), Severe Weather Threat Index (SWEAT), and Convective Available Potential Energy Index (CAPE), the value is quite supportive when the very heavy rain occurs. This shows that the analysis using the NWP method, RGB method, and some flight documentation data have compatibility and support each other.
Co-Authors Jerremy Mezac Sopacua Muhammad Ariel Taufik Muharram Yosafat Donni Haryanto