ex3_1_SubseasonalECVHindcast.md

# Weekly ECV Subseasonal Hindcast Verification

This is a practical case to compute monthly skill scores for the ECMWF/S2S-ENSForhc subseasonal forecast using as a reference dataset ERA5. The ECV is air temperature at surface level (tas).

Here, we aim to calculate the skill scores of the corresponding hindcast of 2016.

Note that to do this, we will detect the Mondays and Thursdays, which are the days of the week in whi