- System
– System name (version): SL-AV10
– Date of implementation: 17.10.2023
- Configuration
– Horizontal resolution of the model, with indication of grid spacing in km: 0.1° in longitude, variable resolution in latitude from 0.13° (11-15 km) in the extratropical part of Southern hemisphere to 0.08° (8-13 km) in midlatitudes of the Northern hemisphere.
– Number of model levels: 104
– Top of model: 0.04 hPa
– Forecast length and forecast step interval: For 00 UTC, forecast fields are available from 3 to 120 hours with the step of 3 hours (some fields with the step of 6 hours ).
For 12 UTC, forecast fields are available from 3 to 240 hours. Up to 120 hours temporal resolution is 3 hours (for some fields 6 hours); for lead times 132-168 hrs forecast fields are written every 12 hours; for lead times 192-240 hrs forecast fields are written every 24 hours.
– Runs per day: 2, from 00 and 12 UTC
– Is model coupled to ocean, wave, sea-ice models? Specify which models: No
– Integration time step: 270 s
– Additional comments: None
- Initial conditions
– Data assimilation method: 3D-Var
– Additional comments: None
- Surface boundary conditions
– Sea-surface temperature? If yes, briefly describe method(s): OSTIA data
– Land-surface analysis? If yes, briefly describe method(s): ISBA assimilation scheme ( Giard D., Bazile E. Mon. Wea. Rev. 2000, 997-1015) as implemented in (Bogoslovskii et al, J. Comput. Technologies, 2008)
– Additional comments: None
- Other details of model
– What kind of soil scheme is in use?: ISBA (Noilhan J., Mahfouf J.-F. Global Planet Change. 1996, p. 145-149).
– How are radiations parameterized?: CLIRAD SW (Tarasova T.A., Fomin B.A. Atm. Ocean. Technol. 2007. p. 1157-1162), RRTMG LW (Mlawer E.J., Taubman S.J., Brown P. D., Iacono M.J., Clough S.A. J. Geoph. Res.: Atmos. 1997. p. 16663-16682)
– What kind of large-scale dynamics is in use (for example, grid-point semi-Lagrangian)?: Grid-point semi-Lagrangian (Tolstykh et al, Geosci. Mod. Devel. 2017, 1961-1983), hybrid vertical coordinate
Hydrostatic or non-hydrostatic?: Hydrostatic
– What kind of boundary layer parameterization is in use?: TOUCANS (Durán I.B., Geleyn J.-F., Vána F. J. Atmos. Sci. 2014), (Durán I.B., Geleyn J.-F., Vána F. J., Schmidli J., Brozkova R. Atmos. Sci. 2018)
– What kind of convection parameterization is in use?: Modified Bougeault scheme (Gerard L., Geleyn J.-F., Quart J.Roy.Met.Soc. 2005) with modifications by R. Fadeev (Fadeev 2023, Tolstykh et al 2024)
– What cloud scheme is in use?: Xu-Randall (Gerard L., Piriou J.-M., Brozkova R., Geleyn J.-F., Banciu D. Mon. Wea. Rev. 2009), subinversion clouds by R. Fadeev (2018).
– Other relevant details?: None
- Further information
– Operational contact point: Mikhail Tolstykh email: This email address is being protected from spambots. You need JavaScript enabled to view it.
– URLs for system documentation: https://elibrary.ru/download/elibrary_35574057_38171365.pdf
– URL for list of products: https://meteoinfo.ru/en/wmc-moscow-products
Ensemble system description
- Ensemble system
– Ensemble name (version): EnSL-AV
– Date of implementation: 01/08/2022
- Configuration of the Ensemble Prediction System
– Horizontal resolution of the model, with indication of grid spacing in km: 0.72x0.9° lat-lon (approximately 75 km)
– Number of model levels: 96
– Top of model: 0.04hPa
– Forecast length and forecast step interval: 10 days, step - 12 hours
– Runs per day (times in UTC): one (00UTC)
– Is there an unperturbed control forecast included? yes
– Number of perturbed ensemble members (excluding control): 40
– Is model coupled to ocean, wave, sea‑ice models? Specify which models: No
– Integration time step: 1200s
– Additional comments:
- Initial conditions and perturbations
– Initial perturbation strategy: LETKF assimilation with multiplicative and additive inflation; analyses are then centered to operational 3D Var analysis.
– Optimization time in forecast (if applicable): N/A
– Horizontal resolution of perturbations (if different from model resolution):
– Initial perturbed area: Global
– Data assimilation method for control analysis: 3D Var
– Are perturbations to observations employed? If so, which observation types are perturbed? No
– Perturbations added to control analysis or derived directly from ensemble analysis: Perturbations are derived directly from ensemble analysis
– Perturbations in +/‑ pairs? No
– Additional comments: None
- Model uncertainty perturbations
– Is model physics perturbed? If so, briefly describe method(s): SPP + SPPT for temperature and vorticity equations.
– Do all ensemble members use exactly the same model version, or are, for example, different parameterization schemes used? Please describe any differences: The same model version is used
– Is model dynamics perturbed? If so, briefly describe method(s): No
– Are the above model uncertainty perturbations applied to the control forecast? No
– Additional comments: None
- Surface boundary perturbations
– Perturbations to SST? If so, briefly describe method(s): No
– Perturbations to soil moisture? If so, briefly describe method(s): T2m and RH2m analyses used for soil moisture correction are produced for each ensemble member with respective background fields.
– Perturbations to surface wind stress or roughness? If so, briefly describe method(s): None
– Any other surface perturbations? If so, briefly describe method(s): None
– Are the above surface perturbations applied to the control forecast? None
– Additional comments: None
- Other details of model
– What kind of soil scheme is in use? ISBA
– How are radiations parameterized? CLIRAD SW (Tarasova, Fomin 2005) + RRTMG LW (Mlawer et al 1997)
– What kind of large‑scale dynamics is in use (for example, grid‑point semi‑Lagrangian)? Grid-point semi-Lagrangian, absolute vorticity equation is solved. (Tolstykh et al GMD 2017)
Hydrostatic or non‑hydrostatic? Hydrostatic
– What kind of boundary layer parameterization is in use? Bastak-Duran et al (JAS 2014)
– What kind of convection parameterization is in use? Bougeault (MWR 85), Ducrocq and Bougeault (95), Gerard and Geleyn (QJ 2005) with our modification of momentum transport
– What cloud scheme is in use? Xu-Randall (JAS 96), diagnostic
– Other relevant details?
- Products
– Method of the calculation, if the method is not unique:
– Other detailed specifications, if necessary:
- Further information
– Operational contact point: Vassily Mizyak This email address is being protected from spambots. You need JavaScript enabled to view it.
– URLs for system documentation:
– URL for list of products: