Work

Performance Evaluation of the ERA5, MERRA-2, and PERSIANN-CDR Gridded Products in the Tambo Basin

Year: 2025

Type: conference-paper

Abstract: Gridded meteorological data help to address the scarcity of data in sparse hydrometeorological networks, but their validation is crucial. This study evaluated the performance of ERA5, MERRA-2, and PERSIANN-CDR gridded products in the Tambo basin, comparing their data with meteorological stations and basin-wide averages using the Pearson correlation coefficient (CC), percent bias (PBIAS), and root mean square error (RMSE). PERSIANN-CDR showed the best performance (CC: 0.84–0.94, PBIAS: 6.90–83.10%, RMSE: 21.97–38.78 mm/month). MERRA-2 underestimated precipitation, while ERA5, despite its high correlation (CC: 0.83–0.94), overestimated it. PERSIANN-CDR is the recommended product for the region, providing a better representation of precipitation for hydrological studies and water resource management.

Source: International Electronic Conference on Water Sciences (ECWS)

DOI: 10.3390/eesp2025032017

Authors: Cristhian Apaza-Vilca, Maria Liz Mamani-Yupanqui, Efrain Lujano

Institutions: Universidad Nacional del Altiplano, Instituto Nacional de Investigación en Glaciares y Ecosistemas de Montaña

Language: English

Topic: Precipitation Measurement and Analysis

Subfield: Atmospheric Science

Field: Earth and Planetary Sciences

Domain: Physical Sciences

SDGs: Climate action, Clean water and sanitation

Open Access status: hybrid

OpenAlex ID: W4409776451

FWCI: 6.848

Cites: 26

Cited by: 1

Related to: 10