Basics about ARPEGE/IFS, ALADIN and AROME in the cycle 46t1r1 of ARPEGE/IFS.

This documentation has the aim to give a general overview of the ARPEGE/IFS, ALADIN and AROME models, for beginners or for someone which knows some specific points but has no general overview of the whole models. It can be seen as a synthetic sum-up of some other documentations, and it contains also a list of references as complete as possible which form the set of documentations.

CETTE DOCUMENTATION A POUR BUT DE DONNER UN APERCU GENERAL DE CE QUE SONT LES MODELES ARPEGE/IFS, ALADIN ET AROME ET DE LEUR CONTENU, SANS TROP ENTRER DANS LES DETAILS, ET DU MEME COUP VA SERVIR DE DOCUMENTATION D’INTRODUCTION A DIVERSES DOCUMENTATIONS BEAUCOUP PLUS DETAILLEES ET BEAUCOUP PLUS CIBLEES AUSSI QUI EXISTENT DEJA. CELA SERA EN QUELQUE SORTE UN RESUME LE PLUS SYNTHETIQUE POSSIBLE DE LA DOCUMENTATION EXISTANTE. CETTE DOCUMENTATION GENERALISTE CONSTITUE UNE SORTE D’``ARPEGE POUR LES NULS" ET EST DESTINEE EN PRIORITE AUX DEBUTANTS ET AUSSI A CEUX DEJA PRATIQUANTS QUI ONT UNE CONNAISSANCE TRES PARCELLAIRE DE CES MODELES ET UNE VISION D’ENSEMBLE RESTANT A ACQUERIR.

• 01/ Introduction and general purpose of this documentation.
• 02/ A brief description of ARPEGE, ALADIN, AROME.
• 03/ The list of available configurations
  and some basics about the architecture of the code.
• 04/ The different projects.
• 05/ The sequences in a forecast suite.
• 06/ Basics about geometry.
• 07/ The forecast: configurations 1, 201, 202.
• 08/ Basics about the physics.
• 09/ Basics about dataflow.
• 10/ The tangent linear (TL) and adjoint (AD) codes.
• 11/ The diagnostics.
• 12/ Screening and observation interpolator.
• 13/ The initialization.
• 14/ Algorithms of assimilation.
• 15/ Configuration 801.
• 16/ Ensemble prediction and ensemble assimilation.
• 17/ Singular vectors calculation and configuration 601.
• 18/ Input surface climatology for models.
• 19/ The other C9xx configurations.
• 20/ Minimizations.
• 21/ Observation treatment before assimilation.
• 22/ IO and the different types of files used.
• 23/ Distributed memory and OpenMP aspects.
• 24/ Launching experiments and plotting outputs.
• 25/ References and documentation.
• Appendix 1/ topics and description location.