1. Ensemble version


Ensemble identifier code
Short Description
Research or operational
Data time of first forecast run

2. Configuration of the EPS


Is the model coupled to an ocean model?   
If yes, please describe ocean model briefly including frequency of coupling and any ensemble perturbation applied.
Is the model coupled to a sea Ice model?
If yes, please describe sea-ice model briefly including any ensemble perturbation applied.
Is the model coupled to a wave model?
If yes, please describe wave model briefly including any ensemble perturbation applied
Ocean model
Horizontal resolution of the atmospheric model
Number of model levels
Top of model
Type of model levels
Forecast length
Run Frequency
Is there an unperturbed control forecast included?
Number of perturbed ensemble members
Integration time step

3. Initial conditions and perturbations


Data assimilation method for control analysis
Resolution of model used to generate Control Analysis
Ensemble initial perturbation strategy
Horizontal and vertical resolution of perturbations
Perturbations in +/- pairs
Initialization of land surface
3.1 What is the land surface model (LSM) and version used in the forecast model, and what are the current/relevant references for the model?
     Are there any significant changes/deviations in the operational version of the LSM from the documentation of the LSM?
3.2 How is soil moisture initialized in the forecasts? (climatology / realistic / other) 
     If “realistic”, does the soil moisture come from an analysis using the same LSM as is coupled to the GCM for forecasts, or another source? Please describe the process of soil moisture initialization.
     Is there horizontal and/or vertical interpolation of initialization data onto the forecast model grid? If so, please give original data resolution(s). 
     Does the LSM differentiate between liquid and ice content of the soil? If so, how are each initialized?
      If all model soil layers are not initialized in the same way or from the same source, please describe. 
3.3 How is snow initialized in the forecasts? (climatology / realistic / other) 
     If “realistic”, does the snow come from an analysis using the same LSM as is coupled to the GCM for forecasts, or another source? Please describe the process of soil moisture initialization. 
      Is there horizontal and/or vertical interpolation of data onto the forecast model grid? If so, please give original data resolution(s) 
      Are snow mass, snow depth or both initialized? What about snow age, albedo, or other snow properties? 
3.4. How is soil temperature initialized in the forecasts? (climatology / realistic / other) 
     If “realistic”, does the soil moisture come from an analysis using the same LSM as is coupled to the GCM for forecasts, or another source? Please describe the process of soil moisture initialization.
     Is the soil temperature initialized consistently with soil moisture (frozen soil water where soil temperature ≤0°C) and snow cover (top layer soil temperature ≤0°C under snow)?
     Is there horizontal and/or vertical interpolation of data onto the forecast model grid? If so, please give original data resolution(s) 
     If all model soil layers are not initialized in the same way or from the same source, please describe. 
3.5. How are time-varying vegetation properties represented in the LSM? 
3.6. What is the source of soil properties (texture, porosity, conductivity, etc.) used by the LSM? 
3.7 If the initialization of the LSM for re-forecasts deviates from the procedure for forecasts, please describe the differences. 

4. Model Uncertainties perturbations


Is model physics perturbed?
Do all ensemble members use exactly the same model version?
Is model dynamics perturbed? 
Are the above model perturbations applied to the control forecast? 
 Additional Comments

5. Surface Boundary perturbations


Perturbations to sea surface temperature?
Perturbation to soil moisture?
Perturbation to surface stress or roughness?
Any other surface perturbation?
Are the above surface perturbations applied to the Control forecast?
Additional comments

6. Other details of the models


Description of model grid
List of model levels in appropriate coordinates
What kind of large scale dynamics is used?  
What kind of boundary layer parameterization is used? 
What kind of convective parameterization is used? 
What kind of large-scale precipitation scheme is used? 
What cloud scheme is used? 
What kind of land-surface scheme is used? 
How is radiation parametrized?
     Long Wave Radiation
     Short Wave radiation
Sea-ice thickness
Other relevant details? 

7. Re-forecast Configuration


Number of years covered
Produced on the fly or fix re-forecasts? 
Frequency
Ensemble size
Initial conditions
Is the model physics and resolution  the same as for the real-time forecasts
If not, what are the differences
Is the ensemble generation the same as for real-time forecasts?
If not, what are the differences

8. References