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| 3. Analysis system | |
| Data assimilation method | 4D-Var |
| Length of the analysis window | 12 hours |
| Number of ensemble members and their resolution | 10, TL319, 63km |
Additional comments:
| 4. Externally prescribed boundary conditions and their source | |
| Sea surface temperature | January 1949–December 1960, HadISST2.1.0.0 (monthly), 0.25 x 0.25 January 1961–August 2007, HadISST2.1.1.0 (pentad), 0.25 x 0.25 September 2007 onwards, OSTIA, 0.05 x 0.05 |
| Sea-ice | January 1949–December 1960, HadISST2.0.0.0, 0.25 x 0.25 January 1961–December 1978, HadISST2.0.0.0, 0.25 x 0.25 January 1979–August 2007, OSI SAF (409a), 0.25 x 0.25 September 2007 onwards, OSI SAF oper 0.05 x 0.05 |
| Snow | in-situ, IMS 2004 onwards |
| Vegetation | prescribed non-time varying tiles, but using seasonally varying LAI |
| Land use (and its evolution in time) | prescribed non-time varying tiles |
| Aerosols | CMIP5 for volcanic and tropospheric sulphate; only seasonal variations for other species |
| Green House Gases | CMIP5 |
| Solar forcing | CMIP5, TIM scaling |
Additional comments:
| 5. Details of model | |
| Dynamical core (e.g., semi-Lagrangian) | semi-Lagrangian |
| Grid structure | TL639 |
| Hydrostatic or nonhydrostatic | Hydrostatic |
| Radiations parameterization | |
| Boundary layer parameterization | |
| Convection parameterization | |
| Cloud parameterization | |
| Land surface parameterization | HTESSEL |
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