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Performance Evaluation of the GPM Satellite Rainfall in the Wampu Basin, North Sumatera, Indonesia Hakim, Anita Maulidiyah Rahma; Harisuseno, Donny; Sisinggih, Dian; Asmaranto, Runi
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 16 No. 2 (2025)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2025.016.02.7

Abstract

Rainfall data is crucial in water resources management, particularly associated with its quantity, quality, and spatial and temporal availability in a basin. This study aims to assess the feasibility of Global Precipitation Measurement (GPM) satellite rainfall data to represent rainfall in the Wampu basin. The observed and the GPM rainfall data were collected for 2001 – 2022. Rainfall data from observations and satellites are classified into seven rainfall depth classes with an interval of 10 mm for each class. The GPM was calibrated by determining each class’s correction factor (CF). Calibration is carried out by adjusting the CF value until the difference between the probability of occurrence of satellite and observation data for 2001 – 2017 shows a minimum value. The accuracy of the yielded CF was then validated by evaluating the estimated rainfall from the GPM with the observed rainfall for 2018 – 2022. The results show that the CF of GPM varies from 0.9 – 1.012 for rainfall intervals 0 – 10 mm, 10 – 20 mm, 20 – 40 mm, 40 – 50 mm, 50 – 100 mm, 100 – 110 mm, and >110 mm, respectively. Then, the validation results show an “Excellent” level of accuracy between the corrected GPM and the observed data.   
Co-Authors Abdillah, Rusdan Adiputra, Dhimas Satibi Andre Primantyo Andre Primantyo Hendrawan Andriyani, Setinda Eka Aniek Masrevaniah Arief Satria M. Atika , Yumna Bayu Rahayudi Berlian, Ramadhan Sangsang Danang Bimo Irianto Delivean Rakha Dermawan Donny Harisuseno Dwi Priyantoro Dwiprayogo, Bayu Elroy Koyari Ery Suhartanto Evi Nur Cahya Fachrudin, Faruq Abdurrahman Favian Giffary Ramadian Hakim, Anita Maulidiyah Rahma Hari Prasetijo Hariyanto, Andri Kwin Hariyoni Hariyoni Heri Suprijanto Hidayah, Tita Ikrar Hanggara, Ikrar Iskandar Iskandar Ivan Dwi P K., Anggraeni Dwi Kurniawati, Oktavia Triana Lily Montarcih Limantara Linda Prasetyorini M. Bisri Mahardhika, Tatag Tata Mahyaya M. Rahman Maulina, Chatherine Grace Moh. Sholichin Mohammad Bisri Muhammad Bisri Munfarid, Munfarid Nugraha, Apria Wayah Patra Surya Nurwijayanti Palupi, Gema Anggun Pitojo Tri Juwono Prasetyo, Wibi Bagus Puguh Wahyudi, Puguh Putri, Dea Anggara Putu Ratih Wijayanti Qadri S, Wahyuddin Rahman, Kurdianto Idi Rastanto, Ridho Nur Aziz Rayhan, Nabil Resti Ambarsari, Diyah Rifai, A Rini Wahyu Sayekti Rini Wahyu Sayekti Riyadi, Bagus Riyanto Haribowo Roosydi, Yayan Ishad Runi Asmaranto Saifuddin Zuhri, Muhammad Iqbal Siregar, Jeremi Ishak Sorey, Teddy Dolfie Sri Wahyuni Sri Wahyuni Sugiarto S Sulianto Sulianto Sumiadi, Sumiadi Suwanto Marsudi Syaelendra, M. Sina Syaiful Anam Ussy Andawayanti Very Dermawan Wahyu Prasetyo Wayan Andi Frederich Gunawan Widodo, Ibnu Sam Widyaningrum, Aprilia Willy Kriswardhana Yudo Tri Kuncoro Yusril Fatrah Zulkanzi, Achmad Kamili