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.

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• 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.