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All Journal JURNAL PENDIDIKAN TAMBUSAI Jurnal Ilmu Fisika Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat Pillar of Physics: Jurnal Berkala Ilmiah Fisika Journal of Renewable Energy, Electrical, and Computer Engineering Georest: Geoscience, Remote Sensing, and Technology
Nofi Yendri Sudiar
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Humanities Astronomy Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Materials Science & Nanotechnology Physics Social Sciences Other

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Analysis of Extreme Rainfall in Padang Using GSMaP Satellite Imagery: Case Study of the July 2023 Flood : Approach Using GSMaP Satellite Data Rozi, Hanifsyah; Razi, Pakhrur; Amir, Harman; Sudiar, Nofi Yendri; Rinadi, Aulia
Georest Vol. 2 No. 2 (2024): Georest (In Press)
Publisher : EarthCare

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57265/georest.v2i2.32

Abstract

Extreme rainfall is a major cause of major flooding in coastal areas, such as Padang, Indonesia. This study analyzes the extreme rainfall event that caused the Padang flood on July 14, 2023 using rainfall data from the Global Satellite Rainfall Mapping system (GSMaP). The aim is to evaluate the spatial and temporal distribution of rainfall during the event and assess the accuracy of GSMaP satellite imagery in capturing the heavy rainfall that caused the flooding. GSMaP satellite data were processed to examine the intensity and distribution of rainfall from July 13, 2023 to July 14, 2023. The analysis showed that rainfall occurred evenly over the entire Padang area, with a peak rainfall intensity of 20-99 mm/day on July 13 and a much higher intensity of 145-434 mm/day on July 14, as recorded by ground-based rain stations. The peak rainfall on the first day occurred at 14:00 UTC, and on the second day at 00:00 UTC. Although GSMaP effectively captured the large-scale rainfall pattern, differences were seen in the local intensity. This continuous rainfall causes severe waterlogging, which then escalates into flooding, which is classified as extreme rainfall. These findings demonstrate the utility of GSMaP in monitoring extreme rainfall, especially in areas with limited ground-based observation infrastructure, and emphasize the role of satellite data in improving early warning systems and flood management strategies in flood-prone areas such as Padang.
Pengaruh Volatile Organic Compounds(VOC) dan Radiasi Matahari terhadap Konsentrasi Ozon Permukaan di Bukit Kototabang Bukittinggi Bahri, Aliefa Zunaida; Sudiar, Nofi Yendri; Razi, Pakhrur; Zulhendra, Zulhendra
Jurnal Pendidikan Tambusai Vol. 9 No. 1 (2025)
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia

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Abstract

Penelitian ini akan menganalisis secara mendalam bagaimana senyawa organik volatil (Volatile Organic Compounds/VOC) dan radiasi matahari terhadap konsentrasi ozon permukaan di Stasiun GAW Bukit Kototabang, Bukittinggi. Data VOC meliputi etanol dan propanol, serta data intensitas radiasi matahari, dianalisis sebagai variabel independen yang memengaruhi pembentukan ozon permukaan melalui reaksi fotokimia. Metode yang di implementasikan dalam analisis ini adalah regresi linier berganda untuk memahami kekuatan hubungan antarvariabel dan tingkat kontribusi masing-masing variabel terhadap konsentrasi ozon permukaan. Hasil penelitian menunjukkan bahwa VOC dan radiasi matahari berkontribusi positif terhadap peningkatan konsentrasi ozon permukaan, dengan intensitas maksimum terjadi pada siang hari. Secara statistik, analisis regresi menunjukkan nilai R-squared sebesar 79%, yang mengindikasikan bahwa kombinasi radiasi matahari dan konsentrasi VOC dapat menjelaskan sebagian besar variasi ozon permukaan di lokasi penelitian. Namun, yang tersisa senilai 21% mungkin dipengaruhi oleh variabel eksternal yang tidak dikaji dalam penelitian ini, seperti kelembapan udara, suhu, dan emisi dari sumber antropogenik lainnya.
Analisis Kondisi Atmosfer Saat Kejadian Hujan Ekstrem di Sumatera Barat (Studi Kasus: 7- 8 Maret 2024) Madinah, Nur; Sudiar, Nofi Yendri; Amir, Harman; Dwiridal, Letmi
Jurnal Pendidikan Tambusai Vol. 9 No. 1 (2025)
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia

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Abstract

Pada tanggal 7-8 Maret 2024 beberapa daerah di Sumatera Barat mengalami hujan ekstrem. Penelitian ini memiliki tujuan untuk menganalisis kondisi atmosfer saat kejadian hujan ekstrem di Sumatera Barat pada saat itu. Data yang digunakan dalam studi ini mencakup data curah hujan yang berasal dari Sta. Klim. Kelas II Sumatera Barat dan data curah hujan dari data online BMKG, MJO, Indeks Dipole Mode, serta suhu kecerahan (TBB) dari Himawari. Hasil penelitian menunjukkan bahwa Hujan ekstrem di Sumatera Barat disebabkan karena rendahnya suhu awan yang bisa dilihat dari citra satelit, ditandai warna merah/magenta. Kemudian karena MJO kuat. MJO di kategorikan kuat, aktivitas pembentukan awan konvektif meningkat, yang biasanya menghasilkan hujan lebat atau ekstrem. Adanya Monsun barat, angin zonal dari barat yang membawa udara lembap dari laut, berkontribusi pada pembentukan awan hujan di daerah pesisir. Jika MJO terjadi bersamaan dengan muson barat, curah hujan di wilayah barat Indonesia akan semakin meningkat. Serta kondisi lokal dan topografi wilayah tersebut, dimana pada daerah dataran rendah terjadi hujan ekstrem dan pada dataran tinggi tidak terjadi hujan ekstrem.
Evaluasi Data Hujan Periodik terhadap Potensi Bencana Banjir Berulang di Kota Padang Bana, Vrielsha; Sudiar, Nofi Yendri; Amir, Harman; Jhora, Fadhila Ulfa
Jurnal Pendidikan Tambusai Vol. 9 No. 1 (2025)
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia

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Abstract

Penelitian ini menyelidiki faktor-faktor yang mempengaruhi curah hujan periodik dan potensi bencana banjir berulang di Kota Padang. Penelitian ini mengaplikasikan teknik analitik untuk memahami karakteristik data curah hujan periodik dan korelasinya dengan kejadian frekuensi banjir. Faktor-faktor yang mempengaruhi curah hujan periodik, seperti kondisi peta standar cuaca dan pola geografis, diperiksa untuk memberikan wawasan tentang hubungan antara intensitas curah hujan periodik dan frekuensi kejadian banjir. Studi ini menerapkan analisis deskriptif untuk merangkum data karakteristik curah hujan periodik, analisis spasial untuk mengevaluasi distribusi curah hujan periodik, dan analisis korelasi dilakukan untuk mengeksplorasi hubungan antara variabel independen dan dependen yang terkait dengan curah hujan periodik dan banjir. Temuan ini bertujuan untuk berkontribusi pada strategi manajemen bencana dan perencanaan di Kota Padang, serta meningkatkan ketahanan kota terhadap peristiwa banjir.
Design of an Air Quality Monitoring System for Carbon Monoxide Gas and PM10 Particles Az-Zahra, Khalishah Raudhatul; Yulkifli, Yulkifli; Sudiar, Nofi Yendri; Mairizwan, Mairizwan
Jurnal Pendidikan Tambusai Vol. 9 No. 1 (2025)
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia

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Abstract

Udara mempunyai peranan yang sangat penting bagi kehidupan makhluk hidup, oleh karena itu udara sebagai sumber daya yang sangat penting harus dijaga dan dilindungi. Untuk mendapatkan udara yang sesuai dengan tingkat kualitas yang diinginkan maka pengendalian udara penting untuk dilakukan. Penelitian ini bertujuan untuk merancang dan membangun sistem monitoring kualitas udara yang mampu mendeteksi gas karbon monoksida (CO) dan partikel debu PM10 menggunakan sensor MQ-7 dan Sharp GP2Y1010AU0F. Sistem monitoring yang dikembangkan dirancang untuk memberikan hasil pengukuran secara langsung dengan cara membandingkan nilai fisis yang terukur oleh sensor dengan instrumen standar untuk evaluasi akurasi dan presisi. Implementasi sistem dilengkapi dengan interface aplikasi Blynk yang memudahkan monitoring data secara realtime. Hasil penelitian menunjukkan bahwa sensor yang digunakan pada sistem monitoring ini mempunyai tingkat linearitas yang baik dalam mengukur gas CO dan PM10. Spesifikasi perancangan sistem juga menunjukkan tingkat akurasi dan presisi yang tinggi dalam mengukur parameter suhu, kelembaban, karbon monoksida dan PM10.
Literature Review: Solar Energy for Alternative Renewable Energy and Potential Application in Indonesia Sulistiyono, Andi; Rifai, Hamdi; Sudiar, Nofi Yendri
Journal of Renewable Energy, Electrical, and Computer Engineering Vol. 5 No. 1 (2025): March 2025
Publisher : Institute for Research and Community Service, Universitas Malikussaleh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/jreece.v5i1.16143

Abstract

Electrical energy has become a human need along with economic improvements and technological advances that require an unlimited supply of energy. Its nature is limited to fossil energy sources and also causes environmental pollution, so it is necessary to use renewable energy as another energy source to overcome this problem. Solar energy is freely available, is an environmentally friendly energy source whose application results have been proven and have promising prospects for the future. This paper presents the results of a research review on the use of solar energy as an alternative source of renewable energy, the basic concept of obtaining it and some results of using this energy. Next, we will briefly review the potential and use of solar energy sources in Indonesia. The high potential of solar energy in Indonesia needs to be processed and regulations that support the development of solar energy power plants as an alternative energy. Technically, solar photovoltaic energy has the potential to become an alternative energy source for the masses in the future as a substitute for fossil energy and to meet the electrical energy needs of remote areas.
Drone-Based Monitoring Design with IoT System for Surface Temperature and Humidity Measurement Habiburrahman, H; Mairizwan, M; Sudiar, Nofi Yendri; Yohandri, Y
PILLAR OF PHYSICS Vol 18, No 1 (2025)
Publisher : Department of Physics – Universitas Negeri Padang UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/16851171074

Abstract

Vertical temperature and humidity profiles observation has often been studied in meteorology to analyze climate phenomena such as temperature inversion. This observation required a monitoring system that could be operated flexibly, ensured accurate data readings, and was capable of storing the collected data. This research was conducted to design a monitoring system using drone, which offered flexibility in three-dimensional space, and included a cloud-based data logger to store measurement data utilizing the Internet of Things system. The research employed testing methods for the sensors and components used in the system. The results show the system's performance specifications, including the characterization of the DHT22 sensor, testing of the NRF24L01 communication module, data logger, and mechanical system design. The design specifications indicate an average temperature measurement accuracy of 99% and 97.8% for humidity. The temperature reading precision is 1.00, while it is 0.99 for humidity. These results demonstrate that the system functions well.
Threshold Value of Atmospheric Stability Indices During Thunderstorm Events at Minangkabau International Airport Ari Nuryadi; Sudiar, Nofi Yendri; Hamdi, Hamdi; Amir, Harman
Jurnal Ilmu Fisika Vol 17 No 2 (2025): September 2025
Publisher : Jurusan Fisika FMIPA Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jif.17.2.201-213.2025

Abstract

Thunderstorms are a significant challenge for aviation operations, especially in tropical regions such as West Sumatra. This study aims to determine threshold values for six atmospheric stability indices—Convective Available Potential Energy (CAPE), K-Index (KI), Lifted Index (LI), Showalter Index (SI), Severe Weather Threat Index (SWEAT), and Total-totals Index (TTI)—to predict thunderstorm events at Minangkabau International Airport (MIA). Radiosonde and daily synoptic reports from 2018–2022 were analyzed using Rawinsonde Observation Programs (RAOB) and Statistical Package for the Social Sciences (SPSS) with a dummy regression approach. The model was validated using a confusion matrix, measuring accuracy, precision, and recall. Results show that the use of locally calibrated thresholds leads to higher and more consistent accuracy, precision, and recall values compared to global benchmarks, due to better adaptation to local weather parameters such as vertical humidity, mid-layer temperature, and wind structure. KI, SI, and TTI showed high sensitivity (recall >88%), while LI and CAPE performed moderately. Monthly variation in index performance was observed, with KI, SI, and TTI dominant in the wet and transition seasons, and SWEAT effective in the dry season when shear-driven convection increases. Thus, locally calibrated indices are recommended for thunderstorm early warning systems in aviation.
RETRACTED: Pengelolaan Sampah Plastik Daerah Kepulauan Di Siberut Selatan Mentawai Sudiar, Nofi Yendri; Asrizal, Asrizal; Razi, Pakhur; Gautama, Muhammad Isa
Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat Vol 22, No 2 (2022): Suluah Bendang: Jurnal Ilmiah Pengabdian kepada Masyarakat
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/sb.02330

Abstract

RETRACTION TO:Sudiar, N. Y. (2022). Pengelolaan Sampah Plastik Daerah Kepulauan Di Siberut Selatan Mentawai. Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat, 22(2), 224-233. (doi: https://doi.org/10.24036/sb.02330This article has been retracted by the Publisher based on the following reason:The Editor of Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat obtains requests from the author for changes authors to the Incorrect author/contributor list (i.e., an eligible author has been omitted or someone who does not meet the authorship criteria has been included).
Pelatihan Kesiapsiagaan Menghadapi Bencana untuk Masyarakat yang Berada Di ‘’Seismic Gap’’ Desa Muara Siberut Razi, Pakhrur; Yohandri, Yohandri; Sudiar, Nofi Yendri; ifdil, ifdil; Thamrin, Thamrin; Asrizal, Asrizal
Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat Vol 22, No 1 (2022): Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/sb.02460

Abstract

Tingginya potensi bencana di daerah seismic gap di kepulauan mentawai telah menjadi perhatian yang serius baik pemerintah pusat maupun daerah. Selain potensi gempa bumi daerah ini juga memiliki potensi diterjang tsunami jika gempa besar terjadi serta banjir. Oleh karena itu perlu dilakukan pelatihan berkelanjutan kepada masyarakat serta mengukur tingkat kesiapsiagaan mereka dalam menghadapi bencana. Program pelatihan ini merupakan bagian dari kegiatan untuk menciptakan desa/nagai tangguh bencana berdasarkan standar SNI desa tangguh necana dan Sendai framework disaster reduction. Selain peningkatan pengetahuan masyarakat tentang potensi bencana di seismic gap kepulauan mentawai, juga dilakukan pelatihan serta pengukuran tingkat kesiapsiagaan masyarakat terhadap bencana. Berdasarkan hasil survey yang laksanakan setelah dilakukan pelatihan, menunjukkan bahwa tingkat kesiapan Individu/keluarga terhadap kesiapsiagaan dalam menghadapi bencana berada pada level utama dengan skor >50.
Co-Authors Ari Nuryadi Asrizal Az-Zahra, Khalishah Raudhatul Bahri, Aliefa Zunaida Bana, Vrielsha Fadhila Ulfa Jhora Gautama, Muhammad Isa Habiburrahman, H Hamdi Hamdi Hamdi Rifai Harman Amir Ifdil Ifdil Letmi Dwiridal Madinah, Nur Mairizwan, M Mairizwan, Mairizwan Pakhrur Razi Razi, Pakhur Rinadi, Aulia Rozi, Hanifsyah sulistiyono, andi Thamrin Thamrin Yohandri Bow Yohandri, Y Yulkifli Yulkifli Zulhendra, Zulhendra