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| Ocean model | NEMO v3.4 |
|---|---|
| Horizontal resolution | 1/4° |
| Vertical resolution | 50 vertical levels |
| Time step | 18 minutes |
| Sea ice model | CICE 4.0 |
| Sea ice model resolution | 1/4° |
| Sea ice model levels | 1 thicknes sonly |
| Wave model | NO |
| Wave model resolution | N/A |
Detailed documentation: goto NEMO documentation
3. Initialization and initial condition (IC) perturbations
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| Hindcast | Forecast | |
|---|---|---|
| Atmosphere initialization | ERA Interim | ECMWF operational analysis |
| Atmosphere IC perturbations | 10 | 10 |
Land Initialization | Forced (obs. atmosphere) monthly run initialized from 10-year spin-up | Forced (obs. atmosphere) monthly run initialized from 10-year spin-up |
| Land IC perturbations | 3 | 3 |
| Soil moisture initialization | From land initialization | From land initialization |
| Snow initialization | From land initialization | From land initialization |
| Unperturbed control forecast? | NO | NO |
Detailed documentation:
More DA details N/AFor more DA details see ECMWF operational analysis documentation at: https://www.ecmwf.int/en/elibrary/16666-part-ii-data-assimilation
Data assimilation method for control analysis: ECMWF operational
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More ocean data assimilation details ?Source and treatment of SST? (Other data sources - altimetry?)available at http://c-glors.cmcc.it/index/index.html
4. Model uncertainties perturbations:
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6. Other relevant information
The 10 atmospheric perturbed ICs, the 3 land perturbed ICs and the 8 (4 in hindcast mode) are combined to yield 240 (120 in hindcast mode) possible perturbed ICs among which the 50 ICs (40 in hindcast mode) to produce the forecast ensemble are chosen at random.
7. Where to find more information
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