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June 26, 2026Geoscientific model developmentOpen Access

Optimisation of ICON-CLM for the EURO-CORDEX domain: developments, sensitivities, tuning

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Authors

BGBeate GeyerACAngelo CampanaleECEvgenii Churiulin

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Overview

Randomized trial optimizes climate model performance in EURO-CORDEX, suggesting enhanced accuracy in simulations.

Key Points

  • The aim is to optimize the ICON-CLM model configuration for improved performance in climate simulations while minimizing biases.
  • Implemented a systematic regional climate model tuning strategy using Linear Meta-Model optimisation (LiMMo).
  • Tested sensitivity of 29 model parameters for their physical consistency and induced biases.
  • Compared expert judgement optimisation with LiMMo results to refine model configurations.
  • Reduced biases in incoming solar radiation by 30% and latent heat flux by 15% through parameter tuning.
  • Fine-tuning focused on highly sensitive parameters led to more efficient parameter combinations.
  • Recommended a new ICON-CLM configuration for EURO-CORDEX using high-quality external datasets.

Cite This Study

Geyer et al. (2026) studied this question.

synapsesocial.com/papers/6a3e19e8030ad1a9b3092723https://doi.org/10.5194/gmd-19-5439-2026
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