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All Journal Jurnal Pendidikan dan Ilmu Geografi JPIG
Muhammad Ariel Taufik Muharram
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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 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.
Co-Authors Cekarus, Joseph Damian Yosafat Donni Haryanto