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Jean-François Geleyn’s essential training course on Dynamics (2000) (Dynamics)

Tuesday 11 January 2000
Contents of this training course on Dynamics : THE SPECTRAL METHOD GENERALITIES MATHEMATICAL BASIS COMPARED PROS AND CONS WITH FINITE DIFFERENCES GLOBAL UNIFORM APPLICATION GLOBAL VARIABLE RESOLUTION APPLICATION LIMITED AREA MODELLING (LAM) APPLICATIONS LINK WITH TIME-STEPPING SCHEMES LINK (...)


ASCS : to make vertical cross sections of ARPEGE/ALADIN fields (2000) (Files and data)

2000
Sommaire OVERLOOK INPUT/OUTPUT METHOD DESCRIPTION OF INPUT NAMELISTS EXAMPLE As a complement to CHAGAL, ASCS is a program to make vertical cross sections of fields from ALADIN or even ARPEGE. Those who have been to the COMPARE/PYREX workshop must have seen many (...)


FRODO : to read header and contents of an ALADIN or FULLPOS file (1999) (PINUTS)

April 1999
FRODO program was developped by Jean-Daniel Gril. It reads files in FA format and extracts header datas from them, with ASCII output format. These datas contain geographicals parameters, dates, levels ..., and the list of fields inside the file. Link to FRODO (...)


CHAGAL : to plot ALADIN or FULLPOS horizontal fields (1999) (PINUTS)

April 1999
CHAGAL is a versatile graphical program originally designed for plotting the contour maps and wind fields based on results of operational implementation of ALADIN model. Anyhow it may be used to satisfy any need of a graphical representation of a model output provided the user preparers his own (...)


Programmes de tests de (fichiers) FA et LFI (1999) (Files and data)

January 1999
This document (in French) written by Jean Clochard in January 1999 aims to present the test programs for FA/FI files : TESTFA and TESTFI.


SURGERY : to determine a gaussian reduced grid (1999) (Projections, grids and model resolutions)

1999
This procedure "surgery" is determining the number of longitudes for each latitude of a gaussian reduced grid, defined by : the number of latitudes NDGL, the maximum number of longitudes NDLON, the truncation NSMAX. The job is split in 2 parts : first part is the computation of the Legendre (...)


SUBGRID : to define parameters of an ALADIN subgrid (1999) (Projections, grids and model resolutions)

1999
This procedure defines the two corners (SW and NE) of a subgrid Aladin, given : the native grid parameters, the approximative SW subgrid corner (in degrees) : ZLONU & ZLATU the number of points of the subgrid (for C+I) : IDLUXU & IDGUXU The files location is on andante: (...)


4-points spline option for the semi-Lagrangian interpolation (February 2005) (Dynamics)

Wednesday 24 May 2006
This is documentation was written by Filip Vana in February 2005 about the new option for the semi-Lagrangian interpolation: 4-points spline. It is supposed to be more precise and accurate than the current default interpolation requiring almost the same CPU consumption. The only problem seems (...)


4D-VAR script documentation (2002, in French) (Variational)

July 2002
This 4D-Var documentation was written in July 2002 by Gérald Desroziers et Pascale Riber. It is in French. Guide d’utilisation Installation du script Définition et lancement d’une expérience Formalisme général Assimilation 4D-Var Assimilation 3D-Var FGAT Structure du script Arbre des appels (...)


2000 - Realization of a simplified, differentiable and realistic physical parametrization for incremental four-dimensional variational data assimilation (Variational)

June 2000
A complete set of the simplified physical parametrizations has been developed for incremental 4D-Var assimilation system. It contains a simplified computation of radiative fluxes, vertical turbulent diffusion, orographic gravity waves, deep convection and stratiform precipitation fluxes. The (...)


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