“…To the best of our knowledge, no one has applied an MME approach to forecasting lake and reservoir temperatures with specified uncertainty. While MMEs for water temperatures have been applied to long-term projections (Almeida et al, 2022;Feldbauer et al, 2022;La Fuente et al, 2022;Wynne et al, 2023), or as model intercomparisons (Golub et al, 2022), the utility of MMEs for real-time water temperature forecasting remains unknown. This gap may exist because ensemble near-term forecasts have, to date, focused on using ensembles of multiple driver data sets (e.g., weather forecasts; Mercado-Bettín et al, 2021) and parameter sets (e.g., Thomas et al, 2020) to partition and quantify uncertainty (Clayer et al, 2023;Thomas et al, 2020), rather than using multiple models to generate more skillful operational forecasts.…”