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All Journal Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) GEOGRAPHIA: Jurnal Pendidikan dan Penelitian Geografi
Haryanto, Yosafat Donny
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Agriculture, Biological Sciences & Forestry Chemistry Earth & Planetary Sciences Education Environmental Science Physics Social Sciences Other

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Analisis Kejadian Hujan Lebat di Wilayah Cilacap Berdasarkan Kondisi Atmosfer, Citra Satelit, dan Indeks Stabilitas (Studi Kasus: Banjir 28 April 2023) Maghriza, Akhdan Raffi Satya; Haryanto, Yosafat Donny; Munawar, Munawar; Yosafat, Oryza; Silalahi, Nita Florina
GEOGRAPHIA : Jurnal Pendidikan dan Penelitian Geografi Vol. 5 No. 2 (2024): Desember
Publisher : Jurusan Pendidikan Geografi Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53682/gjppg.v5i2.8499

Abstract

A heavy rain event that caused flooding hit several areas of Cilacap on April 28, 2022. This flood was triggered by high intensity rain that occurred since Thursday, April 27, 2023. The heavy rain caused the water discharge to overflow and inundate residents' homes. The phenomenon occurred around 17.00-23.30 WIB (10.00-17.30 UTC). This study aims to analyze the causes of extreme rain that occurred in Cilacap. The data used are surface air observation data, rainfall, satellite images, and Radiosonde observation results. The data that has been processed, then analyzed descriptively in terms of temporal and spatial. Surface air analysis conducted from three AWS locations shows conditions that support the occurrence of extreme rain. The highest rainfall measured was 321 mm/day at AWS Digi Cilacap, including the extreme category (>150 mm/day). Himawari-8 Satellite Image Analysis processed with Satellite Animation and Interactive Diagnosis (SATAID) software is used by looking at the temperature of the cloud tops. Based on the results of satellite image analysis, it shows the presence of Cumulonimbus convective clouds with a cloud top temperature value reaching -82.9°C. Local analysis using Radiosonde at Tunggul Meteorological Station indicates an unstable atmosphere that supports the formation of convective clouds as the cause of heavy rain events in the Cilacap region.
Analisis Kejadian Hujan Lebat di Wilayah Cilacap Berdasarkan Kondisi Atmosfer, Citra Satelit, dan Indeks Stabilitas (Studi Kasus: Banjir 28 April 2023) Maghriza, Akhdan Raffi Satya; Haryanto, Yosafat Donny; Munawar, Munawar; Yosafat, Oryza; Silalahi, Nita Florina
GEOGRAPHIA : Jurnal Pendidikan dan Penelitian Geografi Vol. 5 No. 2 (2024): Desember
Publisher : Jurusan Pendidikan Geografi Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53682/gjppg.v5i2.8499

Abstract

A heavy rain event that caused flooding hit several areas of Cilacap on April 28, 2022. This flood was triggered by high intensity rain that occurred since Thursday, April 27, 2023. The heavy rain caused the water discharge to overflow and inundate residents' homes. The phenomenon occurred around 17.00-23.30 WIB (10.00-17.30 UTC). This study aims to analyze the causes of extreme rain that occurred in Cilacap. The data used are surface air observation data, rainfall, satellite images, and Radiosonde observation results. The data that has been processed, then analyzed descriptively in terms of temporal and spatial. Surface air analysis conducted from three AWS locations shows conditions that support the occurrence of extreme rain. The highest rainfall measured was 321 mm/day at AWS Digi Cilacap, including the extreme category (>150 mm/day). Himawari-8 Satellite Image Analysis processed with Satellite Animation and Interactive Diagnosis (SATAID) software is used by looking at the temperature of the cloud tops. Based on the results of satellite image analysis, it shows the presence of Cumulonimbus convective clouds with a cloud top temperature value reaching -82.9°C. Local analysis using Radiosonde at Tunggul Meteorological Station indicates an unstable atmosphere that supports the formation of convective clouds as the cause of heavy rain events in the Cilacap region.
Studi Korelasi Variasi Suhu Udara, Titik Embun, Tekanan Udara terhadap Gaya Angkat Pesawat dengan Mempertimbangkan Komponen Angin Di Bandara Internasional Kualanamu Sianturi, David Karunia; Hutahaean, Kevin; Haryanto, Yosafat Donny
Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) Vol. 6 No. 4 (2025): November
Publisher : Mataram University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/goescienceed.v6i4.1270

Abstract

This study analyzes the correlation between variations in air temperature, dew point, and air pressure on aircraft lift force while considering wind components at Kualanamu International Airport using a quantitative descriptive-correlational approach based on observational METAR and SPECI data throughout 2024. The analyzed parameters included air temperature (°C), dew point (°C), air pressure (hPa), wind direction (°), and wind speed (knot), with lift force calculated based on Boeing 737-800 specifications. The results show that air temperature has a consistent positive correlation with lift force throughout the year (r = 0.35-0.6) with the highest value in April (r = 0.603) and the strongest correlation in the temperature range of 28-33°C, dew point shows variable correlation patterns between months (r = -0.301 to 0.603), while air pressure shows consistent negative correlation (r = -0.1 to -0.47) with the strongest correlation in July (r = -0.472) in the pressure range of 1003-1010 mb. The research concludes that air temperature is the most influential meteorological parameter on aircraft lift force with stable positive correlation, while wind components (headwind/tailwind) have relatively small effects on lift force for large commercial aircraft.
Co-Authors Hutahaean, Kevin Maghriza, Akhdan Raffi Satya Munawar Munawar Sianturi, David Karunia Silalahi, Nita Florina Yosafat, Oryza