Objective Model Calibration

Tuning of climate models in order to match observed climatologies is a common but often concealed technique. A previous project in our group was developing a methodological framework allowing for an objective model tuning (Bellprat et al. 2016). The framework is building a quadratic metamodel that serves as a computationally cheap surrogate of sampling the model parameter space (Bellprat et al. 2012). This method is used to systematically calibrate regional climate models over the tropical Atlantic, and it provides a method to find the set of parameters that gives the best model performance (Shuchang et al., 2022).