In Surfex, each model grid box is represented by four surface types : sea or ocean, water bodies (lakes, ...), urban areas and nature (soil and vegetation). Each surface type is modeled with a specific surface model and the total flux of the grid box results from the addition of the individual fluxes weighted by their respective fraction.
| The model for the tile "Nature" is the ISBA (interaction soil-biosphere-atmosphere) model : | more details here |
| The model for the tile "Town" is the TEB (Town energy balance) model : | The TEB page on the CNRM-GAME website. |
| Surface fluxes above the tile "sea and ocean" can be treated in a very simple way or by using more physically based model : | more details here |
| Surface fluxes above the lake tile can be treated in a very simple way or by using the FLake model | more details here |
| Emission and deposition of dust and aerosols are treated over land and oceans | more details here |
| Assimilation of near surface meteorological variables and remotely sensed variables can be performed using an optimal interpolation or an Ensemble Kalman filter scheme | more details here |
Assimilation of near-surface and remotely sensed variables are performed using two assimilation techniques : The OI scheme allows to correct soil moisture contents and soil temperatures from the knowledge of short-range forecasts errors in temperature and relative humidity at 2 meters. (...)
SURFEX is able to evaluate using several models and parameterisations :
Emission parameterizations : The dust fluxes are calculated using the Dust Entrainment And Deposition (DEAD) model (Zender et al. [2003]) Sea Salt emission are parameterized upon the formulation of Vignati et al. [2001] (...)
Surface fluxes over ocean and sea can be parameterized using either simple or more elaborated parameterisations :
Simple parameterizations : All prognostic variables are kept constant and the roughness lentgh is given by the Charnocks formula. If the surface temperature is below 271.15 K, the (...)
Surface fluxes over ocean and sea can be parameterized using either simple or more elaborated parameterisations :
Simple parameterizations : All prognostic variables are kept constant and the roughness lentgh is given by the Charnock’s formula. If the surface temperature is below 271.15 K, the (...)
ISBA (Interaction Sol-Biosphère-Atmosphère) is a land surface model interfaced with atmospheric and hydrological models. ISBA is developed by CNRM in collaboration with various research teams.
ISBA includes several modules simulating transfers of heat, water, carbon and other components in the (...)
RSS 2.0
