Model dynamics perturbations	Yes
Model physics perturbations	No
If there is a control forecast, is it perturbed?	NA

Detailed documentation: : Batté, L. and Déqué, M., 2016: Randomly correcting model errors in the ARPEGE-Climate v6. 1 component of CNRM-CM: applications for seasonal forecasts, Geoscientific Model Development,9, 2055-2076, doi:10.5194/gmd-9-2055-2016

5. Forecast system and hindcasts

Forecast frequency	month
Forecast ensemble size	51
Hindcast years	1993-2016
Hindcast ensemble size	25
On-the-fly or static hindcast set?	static
Calibration (bias correction) period	NA

6. Other relevant information

The forecast uses three start dates:

The 20th of the previous month (25 members in the forecasts, 12 members in the hindcasts)
The 25th of the previous month (25 members in the forecasts, 12 members in the hindcasts)
the 1st of the month (1 member in the forecast/hindcast)