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Pemanfaatan Data Satelit Himawari-8 Dalam Analisa Kejadian Hujan Lebat Di Jombang Tanggal 1-2 Februari 2021 Sulistiyono, Wahyu; Tuna, Miranda Sahfira; Ramadhan, Shandy Alhaq
TIME in Physics Vol. 2 No. 1 (2024): March
Publisher : Universitas Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/timeinphys.2024.v2i1p31-40

The occurrence of a flood in the Jombang area on February 2, 2021, caused damage to 38 houses and public facilities. Flood events are caused by high-intensity rain produced by cumulonimbus clouds. Analysis of the development of convective clouds is needed to see the microphysics stage of rain-producing clouds. In this study, the analysis of convective clouds and atmospheric conditions was carried out using the Himawari-8 Satellite. Processing is carried out using the RGB Day Convective Storm, 24H-Microphysics, Airmass, and Cloud Convective Overlay methods. Based on the results of the study, it is known that the convective cloud microphysics phase occurs in 2 phases with different times on the 1st and 2. In the cloud top temperature analysis, during the Cb cloud development phase, the cloud top temperature is in the value range of -20 to -60 0C. Based on Airmass imagery, it is observed that convective cloud clusters originate from the waters of the Java Sea and the South Sea. The peak phase of cloud formation occurs at 12.00 UTC on February 1 and 2. Convective cloud formation increases when the updraft value strengthens and the intensity of cloud thickness increases. Meanwhile, the decay phase is marked by a higher downdraft value and a decrease in cloud distribution based on Day Convective Storm and 24H-Microphysics images.

Aplikasi Produk Radar C-Band dalam Identifikasi Awan Penghasil Hujan Es (Studi Kasus: Bogor, 24 Januari 2022) Sulistiyono, Wahyu; Salsabil, Nadhilah Humairah Salwa; Ramadhan, Shandy Alhaq
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.v5i2.8577

The study on the development and convective weather conditions in Bogor, Indonesia, was conducted on January 24, 2022. The research aimed to understand the process of development and convective weather conditions using a data radar system. The Bogor area was surveyed using the Tangerang Radar with a 50-km radius. The study used quantitative research based on the Radar Cuaca data and collected data from CMAX, VIL, and Zhail data from the Gematronik Raw Data radar to understand the weather conditions and wind conditions. The results showed that the development and convective weather conditions were observed at 06.03 UTC with a maximum reflektifitas of 40-45 dBz, reaching peak at 06.35 UTC with a maximum reflektifitas of 56.5 dBz. The wind conditions were observed at 08.19 UTC with reflektivity values below 40-45 dBz. The highest wind speed was identified at 06.35 UTC with a 76.77% probability, similar to the CMAX product.

Pemanfaatan Data Satelit Himawari-8 dalam Analisis Kejadian Hujan Lebat di Jombang Sulistiyono, Wahyu; Tuna, Miranda Sahfira; Ramadhan, Shandy Alhaq
GEOGRAPHIA : Jurnal Pendidikan dan Penelitian Geografi Vol. 5 No. 1 (2024): Juni
Publisher : Jurusan Pendidikan Geografi Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53682/gjppg.v5i1.7705

On February 2, 2021, flooding struck Jombang, damaging 38 houses and public facilities due to heavy rainfall from cumulonimbus clouds. The analysis of convective cloud development using Himawari-8 Satellite with RGB Day Convective Storm, 24H-Microphysics, Airmass, and Cloud Convective Overlay methods revealed that the microphysics phase occurred in two different phases on February 1 and 2. The peak temperature of the Cb cloud during the development phase ranged from -20 to -60Ã‚Â°C. Convective cloud clusters originated from the Java Sea and the Southern Sea. The peak cloud formation occurred at 12:00 UTC on February 1 and 2. Increased updraft and thickness intensity strengthened convective cloud formation. During the decay phase, downdraft increased with a decrease in cloud distribution, as observed in the Day Convective Storm and 24H-Microphysics images.

Aplikasi Produk Radar C-Band dalam Identifikasi Awan Penghasil Hujan Es (Studi Kasus: Bogor, 24 Januari 2022) Sulistiyono, Wahyu; Salsabil, Nadhilah Humairah Salwa; Ramadhan, Shandy Alhaq
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.v5i2.8577

The study on the development and convective weather conditions in Bogor, Indonesia, was conducted on January 24, 2022. The research aimed to understand the process of development and convective weather conditions using a data radar system. The Bogor area was surveyed using the Tangerang Radar with a 50-km radius. The study used quantitative research based on the Radar Cuaca data and collected data from CMAX, VIL, and Zhail data from the Gematronik Raw Data radar to understand the weather conditions and wind conditions. The results showed that the development and convective weather conditions were observed at 06.03 UTC with a maximum reflektifitas of 40-45 dBz, reaching peak at 06.35 UTC with a maximum reflektifitas of 56.5 dBz. The wind conditions were observed at 08.19 UTC with reflektivity values below 40-45 dBz. The highest wind speed was identified at 06.35 UTC with a 76.77% probability, similar to the CMAX product.

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