Evaluasi Kritis Penggunaan Data Hujan Satelit: Pengaruh Kondisi Wilayah Terhadap Akurasi Dan Kelayakan
Abstract
Limited rainfall data in eastern Indonesia encourage the use of satellite data as an alternative to support water resource management. This study evaluates the accuracy of nine satellite rainfall products in two regions with contrasting topography: Manggarai Regency (±1,188 m above sea level) and Sikka Regency (±100 m above sea level). Analysis was performed at daily and monthly scales using Pearson correlation, RMSE, NSE, and bias. The results indicate that in Manggarai, none of the products are adequate, either daily or monthly, due to the complexity of the mountainous topography. In contrast, in Sikka, most products perform reasonably well on a monthly scale, although accuracy decreases significantly daily. Based on the comparison matrix, CHIRPS was identified as the best product for monthly rainfall in Sikka. These findings emphasize that the use of satellite data cannot be generalized across regions, so local validation, taking into account topography and temporal resolution, remains necessary.
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H. Ashouri dkk., “PERSIANN-CDR: Daily precipitation climate data record from multisatellite observations for hydrological and climate studies,” Bull Am Meteorol Soc, vol. 96, no. 1, hlm. 69–83, Jan 2015, doi: 10.1175/BAMS-D-13-00068.1.
A. Behrangi dkk., “Satellite-based precipitation estimation and its application for streamflow prediction over mountainous western U.S. basins,” J Appl Meteorol Climatol, vol. 53, no. 12, hlm. 2823–2842, 2014, doi: 10.1175/JAMC-D-14-0056.1.
H. E. Beck dkk., “Global-scale evaluation of 22 precipitation datasets using gauge observations and hydrological modeling,” Hydrol Earth Syst Sci, vol. 21, no. 12, hlm. 6201–6217, 2017, doi: 10.5194/hess-21-6201-2017.
Y. Derin dan K. K. Yilmaz, “Evaluation of multiple satellite-based precipitation products over complex topography,” J Hydrometeorol, vol. 15, no. 4, hlm. 1498–1516, 2014, doi: 10.1175/JHM-D-13-0191.1.
T. Dinku dkk., “Validation of the CHIRPS satellite rainfall estimates over eastern Africa,” Quarterly Journal of the Royal Meteorological Society, vol. 144, hlm. 292–312, Nov 2018, doi: 10.1002/qj.3244.
C. Y. Liu, P. Aryastana, G. R. Liu, dan W. R. Huang, “Assessment of satellite precipitation product estimates over Bali Island,” Atmos Res, vol. 244, Nov 2020, doi: 10.1016/j.atmosres.2020.105032.
L. Bai, C. Shi, L. Li, Y. Yang, dan J. Wu, “Accuracy of CHIRPS satellite-rainfall products over mainland China,” Remote Sens (Basel), vol. 10, no. 3, 2018, doi: 10.3390/rs10030362.
M. U. Nadeem dkk., “Assessment of Multi-Satellite Precipitation Products over the Himalayan Mountains of Pakistan, South Asia,” Sustainability (Switzerland), vol. 14, no. 14, 2022, doi: 10.3390/su14148490.
C. López-Bermeo, R. D. Montoya, F. J. Caro-Lopera, dan J. A. Díaz-García, “Validation of the accuracy of the CHIRPS precipitation dataset at representing climate variability in a tropical mountainous region of South America,” Physics and Chemistry of the Earth, vol. 127, 2022, doi: 10.1016/j.pce.2022.103184.
M. K. H. Sabu, D. Yudianto, dan O. T. Wijaya, “Evaluasi Curah Hujan Berbasis Data Global pada DAS Wae Mese, Labuan Bajo,” JURNAL SUMBER DAYA AIR, vol. 21, no. 1, hlm. 15–30, Mei 2025, doi: 10.32679/jsda.v21i1.906.
J. Khairunnisa Putri, I. Iskandar, dan J. K. Zainal Abidin Fikri KM, “Evaluation Of Daily Satellite And Reanalysis Of Rainfall Data Over South Sumatra Region.”
X. Tang, H. Li, G. Qin, Y. Huang, dan Y. Qi, “Evaluation of Satellite-Based Precipitation Products over Complex Topography in Mountainous Southwestern China,” Remote Sens (Basel), vol. 15, no. 2, Jan 2023, doi: 10.3390/rs15020473.
DOI: https://doi.org/10.32487/jtt.v14i1.2890
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