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April 8, 2026International Journal of Climatology

From Global to Basin‐Scale: Identifying Best‐Performing CMIP6 Models Across Indian River Basins Through Downscaled Precipitation Products

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Authors

DRDinesh RouloIndian Institute of Technology MadrasSPSubbarao PichukaIndian Institute of Technology MadrasRMRam Parameswar MenonIndian Institute of Technology Madras

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Overview

This assessment ranks global climate models for rainfall accuracy in Indian river basins, suggesting improved water resource management practices.

Key Points

  • The study aims to evaluate and rank CMIP6 climate models for their effectiveness in predicting precipitation across Indian river basins.
  • Developed a four-level evaluation framework to assess climate models
  • Analyzed 24 CMIP6 models across 27 Indian River Basins
  • Used a variety of statistical and performance metrics to rank models
  • Implemented multiple decision-making methods to refine rankings
  • Evaluated models' capabilities in capturing extreme rainfall events
  • Identified top-performing models including IPSL-CM6A-LR and BCC-CSM2-MR based on correlation metrics
  • Varied rankings across metrics indicating the need for multi-criteria evaluation
  • Consistent performers for extreme rainfall were identified, ensuring better climate impact assessments
  • All models ranked among the top five for at least one basin, showing variability in performance across regions

Cite This Study

Roulo et al. (2026) studied this question.

synapsesocial.com/papers/69d5f03374eaea4b11a79abahttps://doi.org/10.1002/joc.70367
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