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Coupling frequency: 3-hourly coupling between atmosphere-land and ocean--sea-ice.
(Better use more specific question? Here or elsewhere?)
The coupled model Global Coupled 2 (GC2) is described in Williams et al, 2015.
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Global Ocean 5.0: Megann et al, 2014
Global Sea Ice 6.0: Rae et al, 2015.
CM:The sea-ice model has different categories of sea-ice it's not quite the same as levels. It's more like fractions of functional types.
3. Initialization and initial condition (IC) perturbations
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Met Office Global Hybrid 4D-VAR: Clayton et al, 2013
More DA details? CM: CM: Will need to know what is required
Data assimilation method for control analysis: 4D Var (atmosphere) and 3DVAR (ocean/sea-ice)
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5. Forecast system and hindcasts
| Forecast frequency | Daily |
|---|---|
| Forecast ensemble size | 2 per day |
| Hindcast years | 23 (1993-2015) |
| Hindcast ensemble size | 28 (4 start dates, 7 per start date) |
| Hindcast start dates | 9, 17, 25 of Month - 1 & 1 of Month 0 |
| On-the-fly or static hindcast set? | on-the-fly |
6. Where to find more information
GloSea5 system:
Model description references:
- Williams, K. D., Harris, C. M., Bodas-Salcedo, A., Camp, J., Comer, R. E., Copsey, D., Fereday, D., Graham, T., Hill, R., Hinton, T., Hyder, P., Ineson, S., Masato, G., Milton, S. F., Roberts, M. J., Rowell, D. P., Sanchez, C., Shelly, A., Sinha, B., Walters, D. N., West, A., Woollings, T., and Xavier, P. K.: The Met Office Global Coupled model 2.0 (GC2) configuration, Geosci. Model Dev., 8, 1509-1524, https://doi.org/10.5194/gmd-8-1509-2015, 2015.
- Walters, D., Boutle, I., Brooks, M., Melvin, T., Stratton, R., Vosper, S., Wells, H., Williams, K., Wood, N., Allen, T., Bushell, A., Copsey, D., Earnshaw, P., Edwards, J., Gross, M., Hardiman, S., Harris, C., Heming, J., Klingaman, N., Levine, R., Manners, J., Martin, G., Milton, S., Mittermaier, M., Morcrette, C., Riddick, T., Roberts, M., Sanchez, C., Selwood, P., Stirling, A., Smith, C., Suri, D., Tennant, W., Vidale, P. L., Wilkinson, J., Willett, M., Woolnough, S., and Xavier, P.: The Met Office Unified Model Global Atmosphere 6.0/6.1 and JULES Global Land 6.0/6.1 configurations, Geosci. Model Dev., 10, 1487-1520, https://doi.org/10.5194/gmd-10-1487-2017, 2017.
- Megann, A., Storkey, D., Aksenov, Y., Alderson, S., Calvert, D., Graham, T., Hyder, P., Siddorn, J., and Sinha, B.: GO5.0: the joint NERC–Met Office NEMO global ocean model for use in coupled and forced applications, Geosci. Model Dev., 7, 1069-1092, https://doi.org/10.5194/gmd-7-1069-2014, 2014.
- Rae, J. G. L., Hewitt, H. T., Keen, A. B., Ridley, J. K., West, A. E., Harris, C. M., Hunke, E. C., and Walters, D. N.: Development of the Global Sea Ice 6.0 CICE configuration for the Met Office Global Coupled model, Geosci. Model Dev., 8, 2221-2230, https://doi.org/10.5194/gmd-8-2221-2015, 2015.
Initialisation references:
- Clayton, A. M., Lorenc, A. C. and Barker, D. M. (2013), Operational implementation of a hybrid ensemble/4D-Var global data assimilation system at the Met Office. Q.J.R. Meteorol. Soc., 139: 1445–1461. doi:10.1002/qj.2054
Blockley, E. W., Martin, M. J., McLaren, A. J., Ryan, A. G., Waters, J., Lea, D. J., Mirouze, I., Peterson, K. A., Sellar, A., and Storkey, D.: Recent development of the Met Office operational ocean forecasting system: an overview and assessment of the new Global FOAM forecasts, Geosci. Model Dev., 7, 2613-2638, https://doi.org/10.5194/gmd-7-2613-2014, 2014.