GloFAS v3.1 forecast skill is evaluated using the Continuous Ranked Probability Skill Score (CRPSS) for ECMWF-ENS 20-year reforecasts against both persistence and climatology benchmark forecasts with respect to GloFAS-ERA5 river discharge reanalysis (also known as forced simulations (sfo)) as proxy observations at n=5997 GloFAS diagnostic river points. Further details on the evaluation methodology can be found here: GloFAS forecast skill.
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