1. Forecast system version

Identifier code: ACCESS_S2

First operational forecast run: 20 October 2021

2. Configuration of the forecast model

Is the model coupled to an ocean model?   Yes: Atmosphere, land, ocean and sea-ice.

Coupling frequency: Hourly

The coupled model is described in Wedd et al (2022).

2.1 Atmosphere and land surface

Model
Horizontal resolution and grid
Atmosphere vertical resolution
Top of atmosphere
Soil levels
Time step

Detailed documentation:

2.2 Ocean and cryosphere

Ocean modelNEMO
Horizontal resolutionORCA 0.25
Vertical resolutionL75
Time step
Sea ice modelCICE
Sea ice model resolutionORCA 0.25
Sea ice model levels
Wave modelN/A
Wave model resolutionN/A

Detailed documentation: NEMO documentation, CICE documentation

3. Boundary contitions - climate forcings

Greenhouse gases
Ozone
Tropospheric aerosols
Volcanic aerosols
Solar forcing

Detailed documentation:

4. Initialization and initial condition (IC) perturbations

4.1 Atmosphere and land


HindcastForecast
Atmosphere initialization


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:

4.2 Ocean and cryosphere


HindcastForecast
Ocean initialization

Ocean IC perturbations

Unperturbed control forecast?

Detailed documentation:

 

5. Model Uncertainties perturbations:

Model dynamics perturbations
Model physics perturbations

If there is a control forecast, is it perturbed?


Detailed documentation: 

6. 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

7. Other relevant information


8. Where to find more information