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Atmosphere-Sea Ice: 30 minutes (also full-timestep of atmospheric model)
Detailed documentation:
CMCC technical documentation Gualdi et al (2020) CMCC Technical Note RP0288 https://www.cmcc.it/publications-type/technical-notes?f_anni&filter_topics&f_divisioni=747&f_inpress&f_searchkey
2.1 Atmosphere and land surface
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CMCC technical documentation Gualdi et al (2020) CMCC Tech Technical Note 288RP0288 https://www.cmcc.it/publications-type/technical-notes?f_anni&filter_topics&f_divisioni=747&f_inpress&f_searchkey
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Nemo Model documentation https://www.nemo-ocean.eu/doc/
CMCC technical documentation Gualdi et al (2020) CMCC Technical Note RP0288 https://www.cmcc.it/publications-type/technical-notes?f_anni&filter_topics&f_divisioni=747&f_inpress&f_searchkey
3. Initialization and initial condition (IC) perturbations
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For more ERA5 details: https://doi.org/10.1002/qj.3803.
CMCC technical documentation Gualdi et al (2020) CMCC Technical Note RP0288 https://www.cmcc.it/publications-type/technical-notes?f_anni&filter_topics&f_divisioni=747&f_inpress&f_searchkey
3.2 Ocean and cryosphere
| Hindcast | Forecast | |
|---|---|---|
| Ocean initialization | C-GLORS Global Ocean 3D-VAR | C-GLORS Global Ocean 3D-VAR |
| Ocean IC perturbations | 4 | 8 |
| Unperturbed control forecast? | NO | NO |
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Detailed documentation: For more info on Ocean D/A perturbations, see Brankart (2013) DOI: https://doi.org/10.1016/j.ocemod.2013.02.004
CMCC technical documentation Gualdi et al (2020) CMCC Technical Note RP0288 https://www.cmcc.it/publications-type/technical-notes?f_anni&filter_topics&f_divisioni=747&f_inpress&f_searchkey
5. Forecast system and hindcasts
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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.
Detailed documentation:
CMCC technical documentation Gualdi et al (2020) CMCC Technical Note RP0288 https://www.cmcc.it/publications-type/technical-notes?f_anni&filter_topics&f_divisioni=747&f_inpress&f_searchkey
7. Where to find more information
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