1. Forecast system version
Identifier code: CFSv2
First operational forecast run: March 2011
2. Configuration of the forecast model
Is the model coupled to an ocean model? Yes
Coupling frequency: One hour
2.1 Atmosphere and land surface
Model | NCEP Global Forecast System |
---|---|
Horizontal resolution and grid | T128 (~ 1x1 Deg Lat/Lon) |
Atmosphere vertical resolution | 64 Levels (sigma-pressure hybrid coordinates) |
Top of atmosphere | 0.02 hPa |
Soil levels | Four |
Time step | 20 minutes |
Detailed documentation:
2.2 Ocean and cryosphere
Ocean model | GFDL MOM4 |
---|---|
Horizontal resolution | Spatial resolution in the zonal direction of 0.5° and in the meridional direction, 0.25° from 10°S to 10°N, progressively decreasing to 0.5° from 10° to 30°, and is fixed at 0.5° beyond 30° in both hemispheres. |
Vertical resolution | 40 Layers |
Time step | 1 hour |
Sea ice model | GFDL Sea Ice Simulator (part of GFDL MOM4 ocean model) |
Sea ice model resolution | |
Sea ice model levels | |
Wave model | Not Applicable |
Wave model resolution | Not Applicable |
Detailed documentation:
3. Initialization and initial condition (IC) perturbations
3.1 Atmosphere and land
Hindcast | Forecast | |
---|---|---|
Atmosphere initialization | Every 5th day of the calendar month from Climate Forecast System Reanalysis (CFSR) | Everyday from Climate Forecast System Reanalysis (CFSR) |
Atmosphere IC perturbations | ||
Land Initialization | ||
Land IC perturbations | ||
Soil moisture initialization | ||
Snow initialization | ||
Unperturbed control forecast? |
Data assimilation method for control analysis:
Horizontal and vertical resolution of perturbations:
Perturbations in +/- pairs:
Detailed documentation:
3.2 Ocean and cryosphere
Hindcast | Forecast | |
---|---|---|
Ocean initialization | ||
Ocean IC perturbations | ||
Unperturbed control forecast? |
Detailed documentation:
4. Model Uncertainties perturbations:
Model dynamics perturbations | |
---|---|
Model physics perturbations | |
If there is a control forecast, is it perturbed? |
Detailed documentation:
5. Forecast system and hindcasts
Forecast frequency | |
---|---|
Forecast ensemble size | |
Hindcast years | |
Hindcast ensemble size | |
On-the-fly or static hindcast set? | |
Calibration (bias correction) period |