High Resolution Numerical Weather Prediction Project
Website of the ALADIN Consortium
Modelling components (under development)
Article published on 14 July 2009
last modification on 21 September 2012

by JFM
Surface energy balance Patch approach over the nature tile : (up to) 12 different energy and water budgets Flexible tile approach with separate energy budgets Multi Energy Balance in SURFEX/HARMONIE Flexible tile scheme with user defined tiles and elevation bands None
Coupling with the atmosphere None None None None None
Soil transfers Multi-layer soil scheme (ISBA-DIF) Account for heterogeneous soil properties and organic soils Multi-layer soil scheme in SURFEX/HARMONIE Increased number of soil layers linked to code enhancement None
Frozen soils Multi-layer diffusion scheme None Multi-layer diffusion scheme None None
Vegetation Two layers - separate energy balance for high and low vegetation canopies : MEB scheme Water interception reservoir; improved root profiles MEB scheme : improved vegetation-snow interactions in SURFEX/HARMONIE None None
Snow model Three-layer scheme (variable depths) – liquid water in snow pack as an additional prognostic variable Multi-layer – liquid water in snow pack as additional prognostic variable Three-layer snow scheme Multi-layer scheme – snow mass, snow density; liquid water in snow pack, dynamic snow layer depths Snow/forest albedo revision and rainfall interception in the snow pack
Lake model bulk fresh water lake model (Flake) None FLake in SURFEX/HARMONIE FLake coupled via surface fluxes bulk fresh water lake model (FLake)
Sea-ice Sea-ice model None Sea-ice model with snow on top Multi-layer thermodynamics with sea-ice categories None
Ocean model 1-D mixed layer ocean (based on TKE concept) None 1D-mixed model in SURFEX/HARMONIE None 1-D mixed layer ocean (based on TKE concept)
Urban areas Town Energy Budget (TEB) model with CANOPY Multi-layer urban canopy parameterization None 2 tile urban scheme with varying parameters None
Chemistry module Aerosols and dust emission COSMO-ART : aerosols and dust emission None None None
Surface boundary layer 5-layer scheme solving turbulent prognostic equations without advection None Monin-Obukhov similarity theory. T2m and q2m defined as canopy air values in the forest (not used in data assimilation) None None