1. System

– System name (version): SL-AV20

– Date of implementation: 31.03.2016

  1. Configuration

– Horizontal resolution of the model, with indication of grid spacing in km: 0.225° in longitude, variable resolution in latitude from 0.24 in the extratropical part of Southern hemisphere to 0.16 degrees in midlatitudes of the Northern hemisphere.

– Number of model levels: 51

– Top of model: 5 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 they are with the step of  3 hours (some fields are with the step of 6 hours), the fields are written every 12 hours for  lead times from 132 to 168 hours; every 24 hours for lead times form  192 to 240 hours.

– Runs per day (times in UTC): 2, 00 and 12 UTC

– Is model coupled to ocean, wave, sea-ice models? Specify which models: No

– Integration time step: 216 s

– Additional comments:

  1. Initial conditions

– Data assimilation method: 3D-Var

– Additional comments:

  1. 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:

  1. Other details of model

– What kind of soil scheme is in use?: ISBA (Noilhan J., Mahfouf J.-F. Global Planet Change. 1996. 145-149).

– How are radiations parameterized?:  CLIRAD SW  (Tarasova T.A., Fomin B.A.

  1. Atm. Ocean.Technol. 2007. 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)

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)  

– What cloud scheme is in use?: Xu-Randall (Gerard L., Piriou J.-M., Brozkova R., Geleyn J.-F., Banciu D.  Mon. Wea. Rev. 2009).

– Other relevant details?:

  1. 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: