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• is run once daily, base time 00 UTC, producing a 46 day forecast. 
• has horizontal resolution of 36 Km and vertical resolution of 137 model levels.  These values are the same as the IFS version before Cy49r1.
• has land-atmosphere and ocean-atmosphere coupling.
• has 100 ensemble members plus an unperturbed ensemble member (the control).
• the dissemination schedule is given in Section 3.1 Product Schedules:
  •  Sub-Seasonal schedules and products.

The ensemble consists of one unperturbed control member (the control) and 100 perturbed members.  These are similar to the control member but differ only that initial states and model physics have been perturbed.  This allows  exploration of the currently understood range of uncertainty in the observations and the model.   A set of sub-seasonal range re-forecasts provide a basis for the sub-seasonal range model climate (ER-M-climate).  The sub-seasonal range forecast suite is not an extension of the medium-range forecasts but is a completely separate system.  

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