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All Journal Jurnal Pendidikan Teknologi dan Kejuruan Journal of Engineering and Technological Sciences Journal of Science and Applicative Technology Jurnal Teknik Lingkungan
Alvin Pratama
Institut Teknologi Sumatera
Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Education Engineering Environmental Science Materials Science & Nanotechnology Mechanical Engineering

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Development of Hydro-Meteorological Hazard Early Warning System in Indonesia Susandi, Armi; Tamamadin, Mamad; Pratama, Alvin; Faisal, Irvan; Wijaya, Aristyo R.; Pratama, Angga F.; Pandini, Olgha P.; Widiawan, Destika Agustina
Journal of Engineering and Technological Sciences Vol 50, No 4 (2018)
Publisher : ITB Journal Publisher, LPPM ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (841.332 KB) | DOI: 10.5614/j.eng.technol.sci.2018.50.4.2

Abstract

This paper discusses the result of the development of a hydro-meteorological hazard early warning system (H-MHEWS) that combines weather prediction from Weather Research and Forecasting (WRF) and the hydrometeorological hazard index from the National Disaster Management Authority (BNPB), Indonesia. In its current development phase, the hazards that H-MHEWS predicts are floods, landslides, and extreme weather events. Potential hazard indices are obtained by using an overlay approach and resampling so that the data have a 100-m spatial resolution. All indices are classified into 4 status categories: “No alert”, “Advisory”, “Watch”, and “Warning”. Flood potential is produced by overlaying rainfall prediction at 3-hour intervals with the flood index. Landslide potential is produced by overlaying rainfall prediction with the landslide index. Extreme weather potential is divided into 3 categories, i.e. heavy rain, strong winds, and extreme ocean waves. The whole prediction is dynamic, following weather predictions at 3-hour intervals. The hazard prediction results will trigger a ‘Warning’ alert in case of emergency status. This alert will be set up in a notification system to make it easier for the user to identify the most dangerous hydrometeorological hazard events.
ANALISIS DISPERSI PENCEMAR UDARA PM10 DI KOTA BANDUNG MENGGUNAKAN WRFCHEM DATA ASIMILASI Pratama, Alvin; Sofyan, Asep
Jurnal Teknik Lingkungan Vol 26, No 1 (2020)
Publisher : ITB Journal Publisher, LPPM ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.tl.2020.26.1.2

Abstract

Abstrak: Pencemaran udara merupakan salah satu permasalahan utama di kota-kota besar di Indonesia, salah satunya Kota Bandung. Permasalahan ini muncul akibat semakin tingginya kebutuhan dan tingkat aktivitas yang dilakukan oleh manusia. Hal ini menjadi salah satu pemicu semakin tingginya konsentrasi polutan di atmosfer yang dapat memengaruhi kehidupan manusia ataupun ekosistem. Di atmosfer, tingkat konsentrasi dan pergerakan polutan dipengaruhi oleh berbagai faktor, seperti kondisi meteorologi, karakteristik topografi, dan sumber emisi. Untuk mengetahui pesebaran dan tingkat konsentrasi polutan tersebut, dilakukan simulasi menggunakan model WRFCHEM. Simulasi ini memanfaatkan data Automatic Weather Station dan data inventarisasi emisi Kota Bandung menggunakan metode asimilasi. Dari hasil simulasi diperoleh bahwa emisi terbesar kota Bandung bersumber dari kendaraan bermotor yang didominasi di bagian selatan yaitu tol Padaleunyi dan Jalan Soekarno Hatta. Sedangkan pemanfaatan data asimilasi dalam model WRFDA, mampu meningkatkan akurasi parameter meteorologi dari hingga 7%. Pesebaran polutan di kota Bandung sangat dipengaruhi oleh faktor lokal dan fenomena monsun. Pada bulan kering, polutan cenderung tersebar ke arah utara dan barat, sedangkan pada bulan basah cenderung tersebar ke arah selatan dan timur. Selain itu, tingginya kecepatan angin pada bulan kering (dari arah selatan dan tenggara) dan karakter topografi yang datar (di selatan) menyebabkan PM10 tersebar hingga keluar Kota Bandung. Sedangkan pada bulan basah, pelemahan kecepatan angin akibat topografi yang komplek di utara Kota Bandung meyebabkan PM10 cenderung tidak terdispersi dengan baik. Dari hasil simulasi tersebut, juga terdapat beberapa daerah yang perlu menjadi prioritas pengelolaan kualitas udara jika dibandingkan dengan baku mutu berdasarkan PP 41 Tahun 1999. Daerah-daerah yang perlu mendapatkan perhatian khusus diantaranya Rancabolang, Mekarjaya dan Pasirluyu. Kata kunci: Pencemaran Udara, WRFCHEM, Asimilasi data, PM10, Kota Bandung Abstract: Air pollution is one of the main problems in big cities in Indonesia, one of which is the city of Bandung. This problem arises due to the increasing needs and level of activity carried out by humans. This has become one of the triggers of higher concentrations of pollutants in the atmosphere that can affect human life or ecosystems. In the atmosphere, the level of concentration and movement of pollutants is influenced by various factors, such as meteorological conditions, topographic characteristics, and emission sources. To find out the distribution and concentration level of these pollutants, simulations were carried out using the WRFCHEM model. This simulation utilizes Automatic Weather Station data and Bandung City emissions inventory data using the assimilation method. From the simulation results it was found that the biggest emissions of the city of Bandung were sourced from motor vehicles dominated in the southern part of the Padaleunyi toll road and Jalan Soekarno Hatta. While the use of assimilation data in the WRFDA model, can improve the accuracy of meteorological parameters from up to 7%. The spread of pollutants in the city of Bandung is strongly influenced by local factors and the phenomenon of the monsoon. In the dry month, pollutants tend to spread to the north and west, while in the wet months tend to spread to the south and east. In addition, the high wind speed in the dry months (from the south and southeast) and the flat topographic character (in the south) causes PM10 to spread out of the city of Bandung. Whereas in the wet month, the weakening of the wind speed due to the complex topography in the north of Bandung city causes PM10 to not be well dispersed. From the results of the simulation, there are also some areas that need to be prioritized in air quality management when compared with the quality standards based on PP 41 of 1999. Areas that need special attention include Rancabolang, Mekarjaya and Pasirluyu. Keywords: Air Pollution, WRFCHEM, Data assimilation, PM10, Bandung City
Analysis Distribution Sulfur Dioxide and Nitrogen Dioxide Concentration from PLTU Pangkalan Susu with Callpuff Method Randy Zulkarnain; Isra’ Suryati; Alvin Pratama
Jurnal Pendidikan Teknologi Kejuruan Vol 3 No 4 (2020): Regular Issue
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jptk.v3i4.15923

Abstract

Coal-fired power plants will emit several types of pollutants into the ambient air such as particulates and gases. One way to estimate the extent of the impact distribution of these pollutants is by using air quality modeling. The model used in this study is Calpuff, where this model is a non-steady state model and is influenced by variations in meteorological factors. The research location is PLTU Pangkalan Susu (2x200 MW) with SO2 and NO2 parameters. The purpose of this study was to calculate the concentrations of SO2 and NO2 with Calpuff, to validate modeling with field observations and to simulate the distribution of impacts. The results showed that the concentration of SO2 model obtained was 0.32 - 3.57 µg/m3 and NO2 was 0.51 - 5.15 µg/m3. Meanwhile, the observation results showed that the SO2 concentration was 27 - 39.88 µg/m3 and NO2 was 19.77 - 29.73 µg/m3. The simulation results of the distribution of SO2 and NO2 concentrations with the Calpuff model show that the impact distribution area is in the direction of the wind in the windrose and the affected area is in the southwest of the PLTU Pangkalan Susu. The results of model validation for the values ​​of d = 0.97, r = 0.616 - 0.665 and FB = -1.719 - -1.849, which means that the Calpuff model is quite valid and can be applied to predict the impact distribution area at PLTU Pangkalan Susu.
Development of Hydro-Meteorological Hazard Early Warning System in Indonesia Armi Susandi; Mamad Tamamadin; Alvin Pratama; Irvan Faisal; Aristyo R. Wijaya; Angga F. Pratama; Olgha P. Pandini; Destika Agustina Widiawan
Journal of Engineering and Technological Sciences Vol. 50 No. 4 (2018)
Publisher : Institute for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2018.50.4.2

Abstract

This paper discusses the result of the development of a hydro-meteorological hazard early warning system (H-MHEWS) that combines weather prediction from Weather Research and Forecasting (WRF) and the hydrometeorological hazard index from the National Disaster Management Authority (BNPB), Indonesia. In its current development phase, the hazards that H-MHEWS predicts are floods, landslides, and extreme weather events. Potential hazard indices are obtained by using an overlay approach and resampling so that the data have a 100-m spatial resolution. All indices are classified into 4 status categories: "No alert", "Advisory", "Watch", and "Warning". Flood potential is produced by overlaying rainfall prediction at 3-hour intervals with the flood index. Landslide potential is produced by overlaying rainfall prediction with the landslide index. Extreme weather potential is divided into 3 categories, i.e. heavy rain, strong winds, and extreme ocean waves. The whole prediction is dynamic, following weather predictions at 3-hour intervals. The hazard prediction results will trigger a 'Warning' alert in case of emergency status. This alert will be set up in a notification system to make it easier for the user to identify the most dangerous hydrometeorological hazard events.
ANALISIS DISPERSI PENCEMAR UDARA PM10 DI KOTA BANDUNG MENGGUNAKAN WRFCHEM DATA ASIMILASI Alvin Pratama; Asep Sofyan
Jurnal Teknik Lingkungan Vol. 26 No. 1 (2020)
Publisher : ITB Journal Publisher, LPPM ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.tl.2020.26.1.2

Abstract

Abstrak: Pencemaran udara merupakan salah satu permasalahan utama di kota-kota besar di Indonesia, salah satunya Kota Bandung. Permasalahan ini muncul akibat semakin tingginya kebutuhan dan tingkat aktivitas yang dilakukan oleh manusia. Hal ini menjadi salah satu pemicu semakin tingginya konsentrasi polutan di atmosfer yang dapat memengaruhi kehidupan manusia ataupun ekosistem. Di atmosfer, tingkat konsentrasi dan pergerakan polutan dipengaruhi oleh berbagai faktor, seperti kondisi meteorologi, karakteristik topografi, dan sumber emisi. Untuk mengetahui pesebaran dan tingkat konsentrasi polutan tersebut, dilakukan simulasi menggunakan model WRFCHEM. Simulasi ini memanfaatkan data Automatic Weather Station dan data inventarisasi emisi Kota Bandung menggunakan metode asimilasi. Dari hasil simulasi diperoleh bahwa emisi terbesar kota Bandung bersumber dari kendaraan bermotor yang didominasi di bagian selatan yaitu tol Padaleunyi dan Jalan Soekarno Hatta. Sedangkan pemanfaatan data asimilasi dalam model WRFDA, mampu meningkatkan akurasi parameter meteorologi dari hingga 7%. Pesebaran polutan di kota Bandung sangat dipengaruhi oleh faktor lokal dan fenomena monsun. Pada bulan kering, polutan cenderung tersebar ke arah utara dan barat, sedangkan pada bulan basah cenderung tersebar ke arah selatan dan timur. Selain itu, tingginya kecepatan angin pada bulan kering (dari arah selatan dan tenggara) dan karakter topografi yang datar (di selatan) menyebabkan PM10 tersebar hingga keluar Kota Bandung. Sedangkan pada bulan basah, pelemahan kecepatan angin akibat topografi yang komplek di utara Kota Bandung meyebabkan PM10 cenderung tidak terdispersi dengan baik. Dari hasil simulasi tersebut, juga terdapat beberapa daerah yang perlu menjadi prioritas pengelolaan kualitas udara jika dibandingkan dengan baku mutu berdasarkan PP 41 Tahun 1999. Daerah-daerah yang perlu mendapatkan perhatian khusus diantaranya Rancabolang, Mekarjaya dan Pasirluyu. Kata kunci: Pencemaran Udara, WRFCHEM, Asimilasi data, PM10, Kota Bandung Abstract: Air pollution is one of the main problems in big cities in Indonesia, one of which is the city of Bandung. This problem arises due to the increasing needs and level of activity carried out by humans. This has become one of the triggers of higher concentrations of pollutants in the atmosphere that can affect human life or ecosystems. In the atmosphere, the level of concentration and movement of pollutants is influenced by various factors, such as meteorological conditions, topographic characteristics, and emission sources. To find out the distribution and concentration level of these pollutants, simulations were carried out using the WRFCHEM model. This simulation utilizes Automatic Weather Station data and Bandung City emissions inventory data using the assimilation method. From the simulation results it was found that the biggest emissions of the city of Bandung were sourced from motor vehicles dominated in the southern part of the Padaleunyi toll road and Jalan Soekarno Hatta. While the use of assimilation data in the WRFDA model, can improve the accuracy of meteorological parameters from up to 7%. The spread of pollutants in the city of Bandung is strongly influenced by local factors and the phenomenon of the monsoon. In the dry month, pollutants tend to spread to the north and west, while in the wet months tend to spread to the south and east. In addition, the high wind speed in the dry months (from the south and southeast) and the flat topographic character (in the south) causes PM10 to spread out of the city of Bandung. Whereas in the wet month, the weakening of the wind speed due to the complex topography in the north of Bandung city causes PM10 to not be well dispersed. From the results of the simulation, there are also some areas that need to be prioritized in air quality management when compared with the quality standards based on PP 41 of 1999. Areas that need special attention include Rancabolang, Mekarjaya and Pasirluyu. Keywords: Air Pollution, WRFCHEM, Data assimilation, PM10, Bandung City
Evaluasi Satellite Precipitation Product (GSMaP, CHIRPS, dan IMERG) di Kabupaten Lampung Selatan Alvin Pratama; Hayim Muhammad Agiel; Ade Ayu Oktaviana
Journal of Science and Applicative Technology Vol 6 No 1 (2022): Journal of Science and Applicative Technology June Chapter
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35472/jsat.v6i1.702

Abstract

The availability of rainfall data is an important requirement in various activities. The limitations of observational data make the satellit precipitation product (SPPs) as an alternative. However, the data must be verified before being used. Verification methods are done by using matric statistic methods such as correlation, error and relative bias. Meanwhile, to see the ability of SPPs in detecting rainfall events, it uses a contingency table method. The purpose of this research is to evaluate the ability of SPPs against observation data. Evaluation of SPPs rainfall data is carried out based on a time scale, namely monthly, 10 daily, and daily. This research uses the data from 2018–2020. On a monthly and 10 daily scale, the CHIRPS data shows excellent linearity and rain detection ability. On a daily scale, IMERG shows better linearity than GSMaP and CHIRPS in every season, with moderate to strong correlation coefficients. However, these data tend to be underestimated with a very large bias. In terms of detecting daily rain, GSMaP tends to be better than CHIRPS and IMERG on every season based on the CSI index. However, in the dry season and transition II, the ability tends to be lower. In general, for the amount of rainfall intensity, the three SPPs data still has a fairly large error against the observation data eventhough the ability to detect rainfall is good.
Co-Authors Ade Ayu Oktaviana Angga F. Pratama Aristyo R. Wijaya Armi Susandi Asep Sofyan Destika Agustina Widiawan Faisal, Irvan Hayim Muhammad Agiel Irvan Faisal Isra Suryati Mamad Tamamadin Olgha P. Pandini Pandini, Olgha P. Pratama, Angga F. Randy Zulkarnain Sofyan, Asep Susandi, Armi Tamamadin, Mamad Widiawan, Destika Agustina Wijaya, Aristyo R.