R2 evaluation between Niño region SSTs (1+2, 3, 3.4, 4) and RAIN4PE monthly precipitation in the Piura River basin.
DOI:
https://doi.org/10.18687/LACCEI2026.1.1.234Palabras clave:
SST, RAIN4PE, precipitation, teleconnections, ENSO, Piura basinResumen
Sea surface temperature (SST) anomalies in the Niño 1+2 region have a direct influence on precipitation variability in the Piura River basin, often triggering high-impact hydrometeorological events. This study evaluates the sensitivity of the RAIN4PE precipitation product to these anomalies by applying the coefficient of determination (R2) to monthly time series processed in Google Earth Engine. The results indicate that RAIN4PE responds significantly to warm Niño 1+2 conditions, reaching its highest R2 values between January and March, and revealing spatial patterns consistent with the regional ENSO dynamics. Overall, the findings demonstrate that RAIN4PE is a reliable tool for monitoring precipitation in the Piura River basin and provides valuable support for teleconnection studies and climate risk management.
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2026-07-27
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Derechos de autor 2026 LACCEI
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Esta obra está bajo una Licencia Creative Commons Atribución-NoComercial-CompartirIgual 4.0 Internacional.
LACCEI conserva el copyright de todos los artículos publicados bajo los términos de su acuerdo de transferencia de copyright. Como titular del copyright, LACCEI distribuye los artículos al público bajo la Licencia Internacional Creative Commons Atribución-NoComercial-CompartirIgual 4.0 (CC BY-NC-SA 4.0).
Cómo citar
Liñan Olortegui, C. A., Miranda Villarroel, A. N., Carmona Arteaga, A., Castillo Navarro, L. F., & Pucha Cofrep, F. L. (2026). R2 evaluation between Niño region SSTs (1+2, 3, 3.4, 4) and RAIN4PE monthly precipitation in the Piura River basin. LACCEI, 1(14). https://doi.org/10.18687/LACCEI2026.1.1.234