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The ALADIN configurations
Nine are currently fully validated (the number is likely to
increase in the near future, given the momentum of the project) :
- e923 : the creation of the « geographical » conditions
for any given geometry of the LAM, anywhere on the globe ;
- e927/ee927 : the creation of initial and/or lateral boundary conditions
starting from an ARPEGE or an ALADIN file ;
- e701 : the optimal interpolation analysis module nick-named CANARI
;
- e001 : the model integration itself (with its digital filter
initialization (DFI) option) ;
- and the fully compatible post-processing Full-Pos
(itself not an indépendant configuration but a variant of one (d) time-step),
- Non-Hydrostatic model using the Laprise formulation with a eulerian or
semi-Lagrangian 3 time step advection,
- adiabatic tangent linear and adjoint eulerian models (e401, e501, e601
& e801) in a simple technical frame (1 processor).
The advantage of this structure is that all these
applications can be driven from a single « object »
version of the code, for any localization, geometry, number and spacing of
vertical levels, etc..., with the implicit certainty that all these
characteristics will be compatible with all consecutively employed
configurations, as well as the definitions of basic constants (gravity, radius
of the Earth, gas constant, etc...) and of thermodynamic functions (saturation
pressure and derived expressions). Contrary to the maintenance
problem, which required much individual investment for a few key persons,
this advantageous simplified use of the code (simple unix-scripts) was a bonus
for a project that needed to involve many part-time ALADIN scientists (average
presence in Toulouse = 25 per cent of that of the
« standard » team member).
documentation on the configurations
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