García-Ten et al. (2025) Evaluation of CMORPH V1.0, IMERG V07A and MSWEP V2.8 Satellite Precipitation Products over Peninsular Spain and the Balearic Islands

⚠️ Warning: This summary was generated from the abstract only, as the full text was not available.

Identification

• Journal: Remote Sensing
• Year: 2025
• Date: 2025-10-28
• Authors: Alejandro García-Ten, Raquel Niclòs, Enric Valor, V. Caselles, María José Estrela, Juan Javier Miró, M. Y. Luna, Fernando Belda
• DOI: 10.3390/rs17213562

Research Groups

• Agencia Estatal de Meteorología (AEMET) (as the source of reference gauge data)
• Research groups involved in the analysis of satellite-derived precipitation products for Peninsular Spain and Balearic Islands.

Short Summary

This study evaluates the suitability of three satellite-derived precipitation products (CMORPH V1.0, IMERG V07A, and MSWEP V2.8) across Peninsular Spain and Balearic Islands using AEMET gauge data as reference, finding MSWEP generally preferable over IMERG, while CMORPH is not recommended, with performance varying significantly by seasonality, intensity, altitude, and orography.

Objective

• To analyze the suitability of CMORPH V1.0, IMERG V07A, and MSWEP V2.8 satellite-derived precipitation products across Peninsular Spain and Balearic Islands using AEMET gauge data as reference.
• To investigate the dependence of their performance on seasonality, precipitation intensity, altitude, and orography.

Study Configuration

• Spatial Scale: Peninsular Spain and Balearic Islands.
• Temporal Scale: Daily and monthly.

Methodology and Data

• Models used: CMORPH V1.0, IMERG V07A, MSWEP V2.8 (these are the satellite-derived precipitation products evaluated).
• Data sources: Satellite-derived precipitation products (CMORPH V1.0, IMERG V07A, MSWEP V2.8) and ground-based gauge data from Agencia Estatal de Meteorología (AEMET) as reference.

Main Results

• CMORPH V1.0 is not recommended for use in the studied region.
• MSWEP V2.8 is generally preferable over IMERG V07A, although MSWEP performs worse for lighter precipitation intensities and during summer.
• IMERG V07A and MSWEP V2.8 generally show a Correlation Coefficient (CC) and Probability of Detection (POD) greater than 67%, and a False Alarm Ratio (FAR) greater than 30%. CMORPH V1.0 exhibits inverse performance.
• All evaluated products tend to overestimate precipitation with lower frequency but greater magnitude, at least twice the reference value.
• Monthly performance is better than daily performance, but with an increased rate of underestimation.
• Performance during spring and autumn is similar to overall performance, whereas summer presents the most divergent patterns.
• For heavier precipitation intensities, all products show improved correlation with reference data and enhanced detection capabilities, but also exhibit an increased underestimation rate and magnitude.
• The worst performance for all products occurs in regions characterized by simultaneously higher orographical complexity, greater annual precipitation, and higher altitude.
• The study recommends using these satellite-derived precipitation products with caution and advises analyzing their performance for specific applications of interest.

Contributions

• Provides a comprehensive evaluation of three prominent satellite-derived precipitation products (CMORPH V1.0, IMERG V07A, MSWEP V2.8) specifically tailored for Peninsular Spain and Balearic Islands.
• Offers detailed insights into how the performance of these products is influenced by critical environmental factors such as seasonality, precipitation intensity, altitude, and orography.
• Delivers practical recommendations for the cautious application of these products in the studied region, emphasizing the need for application-specific performance analysis.

Funding

• Not explicitly mentioned in the provided text.

Citation

@article{GarcíaTen2025Evaluation,
  author = {García-Ten, Alejandro and Niclòs, Raquel and Valor, Enric and Caselles, V. and Estrela, María José and Miró, Juan Javier and Luna, M. Y. and Belda, Fernando},
  title = {Evaluation of CMORPH V1.0, IMERG V07A and MSWEP V2.8 Satellite Precipitation Products over Peninsular Spain and the Balearic Islands},
  journal = {Remote Sensing},
  year = {2025},
  doi = {10.3390/rs17213562},
  url = {https://doi.org/10.3390/rs17213562}
}