Pernambuco Rainfall Potential Dataset (RPD-PE)

The Pernambuco Rainfall Potential Dataset (RPD-PE) is a geospatial precipitation dataset developed to support engineering, hydrological, and water resources applications in the State of Pernambuco, Brazil. The dataset was derived from the Brazilian Daily Weather Gridded Data (BR-DWGD v3.2.4) and provides a set of ready-to-use climatological raster products describing long-term rainfall characteristics for the period 2001–2025. These products summarize precipitation magnitude, variability, seasonality, and climatic extremes, providing a practical alternative to processing the original daily BR-DWGD dataset. The repository also includes the complete workflow used to generate the dataset, including the input data, validation results, Python scripts, and documentation, ensuring full reproducibility of the methodology. Dataset contents Mean Annual Precipitation Annual Precipitation Variability (Standard Deviation) Annual Coefficient of Variation (CV) Mean Monthly Precipitation Monthly Precipitation Variability (Standard Deviation) Monthly Coefficient of Variation (CV) Maximum and Minimum Annual Precipitation Maximum and Minimum Monthly Precipitation Precipitation Concentration Index (PCI) Validation The BR-DWGD precipitation data were independently validated using 199 APAC pluviometric stations and more than 255,000 paired daily observations collected between 2022 and 2025. Overall validation statistics: Pearson Correlation (R): 0.728 RMSE: 6.27 mm MAE: 2.34 mm Nash–Sutcliffe Efficiency (NSE): 0.530 Percent Bias (PBIAS): −0.21% Applications The RPD-PE is intended to support: Rainwater harvesting; Water resources management; Hydrological modelling; Urban drainage studies; Agricultural planning; Environmental modelling; Territorial planning. The methodology used to generate the dataset is fully described in the accompanying scientific article. Version: 1.0Spatial Resolution: 0.1° × 0.1°Coordinate Reference System: SIRGAS 2000 (Geographic Coordinates)Temporal Coverage: 2001–2025