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Non-Hydrostatic Model versioned documentations (2013) (Dynamics)

Thursday 31 January 2013
In this page you will find the official scientific documentation of the Aladin NH model (authors : Pierre Bénard and Jan Masek). The old versions of the documentation are archived (version 1 1995-2003, version 2.0.0 of December 2003, version 2.1 of December 2004, version 3.0 of July 2011), and (...)


ODB documentation (ODB : Observational DataBase)

Thursday 24 January 2013
An internal (IFS/ARPEGE/LAM) documentation of ODB has been written by the ECMWF (contact at ECMWF : Anne Fouilloux) and is available on the "partners part" of the aladin website (http://www.cnrm.meteo.fr/aladin/spip.php?article172).


Use of the 2D structure of GOM-arrays for the assimilation of radar reflectivities in the AROME model at Météo-France, April 2012 (Variational)

Thursday 13 December 2012
Use of the 2D structure of GOM-arrays for the assimilation of radar reflectivities in the AROME model at Météo-France by Eric Wattrelot : A 1D method to get relative humidity retrievals from radar reflectivities : why and how ? Dataflow of the 2D-GOM and specific points linked to radar (...)


Aladin-dust user’s guide (Jan 2012, in French) (Physics)

Friday 27 January 2012 by Patricia
This guide is an addendum to the technical documentation of the ALADIN model. Its focuses on many physical processes linked to desert aerosols that are in the ALADIN code. This guide points out which modifications have to be made in the namelists and which main keys are needed in order to (...)


Coding standards for ARPEGE, IFS and ALADIN Systems (Nov. 2011) (Coding, phasing, porting)

Monday 28 November 2011 by Patricia
This document summarizes the most important coding norms and rules one has to keep in mind while designing and writing a piece of code in the Arpège-IFS software : Standards for the presentation of the code Preliminary design of the code Detailed design of the code Detailed Fortran coding (...)


Rotated/Tilted Mercator Projection (2011) (Projections, grids and model resolutions)

Sunday 25 September 2011
The rotated/tilted Mercator geometry is introduced. The associated computations are developed. These computations involve formulae for : the direct geometric transform, the reverse geometric transform, the quantities associated to Coriolis force, the map factor, the transformation of vectors (...)


Pour une meilleure gestion des namelists et des validations (Juin 2010). (Coding, phasing, porting)

Monday 13 September 2010 by Karim Yessad
Sommaire RESUME TABLE DES MATIERES ON RECENSE ICI LES RAISONS QUI ONT CONDUIT DANS LE PASSE A DES DIFFICULTES DE VALIDATIONS, ET ON PROPOSE UN CERTAIN NOMBRE DE RECOMMANDATIONS AFIN D’AMELIORER LA VALIDATION DES CODES ET D’Y PASSER UN PEU MOINS DE TEMPS. (...)


FA API package (Mar 2010) (Files and data)

Tuesday 30 March 2010 by Patricia
The FA API is a higher level application programming interface providing an easy access to FA file format. The fa_api is a wrapper library that integrates several IFS/Arpege auxiliary libraries (fa, lfi, eggx, etc.) and provides unified and easy to use interface for manipulating FA files. The (...)


Phasing roadmap (Dec 2009) (Coding, phasing, porting)

Friday 18 December 2009 by Patricia
This documents (version 1.5, 18/12/2009) gives phasing general rules on source code and phasing roadmap of actions. Useful information could also be found in the (old) phasers’ guide.


"A and B" : Design of the hybrid vertical coordinate (eta), 2008 (Dynamics)

Wednesday 16 December 2009
These documents describe a new method for the setting the vertical levels in the "A and B" namelists. These describe a more intuitive method to define the hybrid pressure terrain-following coordinate in ARPEGE/ALADIN/AROME/... A separate file contains the external FORTRAN program and Linux (...)


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