Assess the quality of calibration
Is using the following reference is relevant?
Royer-Gaspard, P., Andréassian, V., Thirel, G., 2021. Technical note: PMR – a proxy metric to assess hydrological model robustness in a changing climate. Hydrology and Earth System Sciences 25, 5703–5716. https://doi.org/10.5194/hess-25-5703-2021