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Recommended variable naming in ARPEGE/IFS. (Technical and coding aspects)
Tuesday 10 April 2018
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This documentation has for purpose to give a recommended standard root to name meteorological quantities which are used in the model.
CFU (cumulated fluxes) and XFU (instantaneous fluxes) in the cycle 46 of ARPEGE/IFS. (Diagnostics)
Tuesday 10 April 2018
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Table of contents Abstract RESUME Contents
This documentation describes some diagnostics done on the physical fluxes: CFU (cumulated fluxes) and XFU (instantaneous fluxes). Some algorithmic aspects and technical aspects (organigramme for example) are (...)
Digital filtering initialisation in the cycle 46 of ARPEGE/IFS. (Dynamics)
Tuesday 10 April 2018
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Table of contents Abstract RESUME Contents
This documentation describes the digital filtering initialisation (DFI) and its implementation in ARPEGE/IFS. Some theoretical aspects are recalled. The way of implementing the DFI in ARPEGE/IFS is then described, (...)
Semi-Implicit spectral computations and predictor-corrector schemes in the cycle 46 of ARPEGE/IFS. (Dynamics)
Tuesday 10 April 2018
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Table of contents Abstract RESUME Contents
This documentation describes two types of schemes allowing to stabilize the numerical discretizations of the models: the semi-implicit scheme and the iterative centred-implicit scheme (sometimes called (...)
Semi-Lagrangian computations in the cycle 46 of ARPEGE/IFS. (Dynamics)
Tuesday 10 April 2018
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Table of contents Abstract RESUME Contents
The general purpose of this documentation is to describe the set of equations used, and also the way to integrate the dynamics of the model with the semi-Lagrangian method currently implemented in ARPEGE/IFS. The (...)
Integration of the model equations, and eulerian dynamics, in the cycle 46 of ARPEGE/IFS. (Dynamics)
Tuesday 10 April 2018
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Table of contents Abstract RESUME Contents Appendices
This documentation can be seen as a long introduction to modeling. The general purpose of this documentation is to describe the set of equations used, and also the way to integrate the dynamics of the (...)
Horizontal diffusion computations in cycle 46 of ARPEGE/IFS. (Dynamics)
Tuesday 10 April 2018
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Table of contents Abstract RESUME Contents
This documentation recalls some basics about horizontal diffusion schemes, and describes how they are implemented in ARPEGE/IFS and its LAM (limited area model) counterpart. The ECMWF way of implementing them (which (...)
Spectral transforms in the cycle 46 of ARPEGE/IFS. (Dynamics)
Tuesday 10 April 2018
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Table of contents Abstract RESUME Contents Appendices
ARPEGE/IFS, ALADIN and AROME are spectral models, so this documentation has for purpose to describe the spectral transforms done. The present note has for aim to give a brief summary of the spectral method (...)
Basics about ARPEGE/IFS, ALADIN and AROME in the cycle 46 of ARPEGE/IFS. (Configurations)
Tuesday 10 April 2018
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Table of contents Abstract RESUME Contents
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 (...)
Distributed memory features in the cycle 46 of ARPEGE/IFS. (Technical and coding aspects)
Tuesday 10 April 2018
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Table of contents Abstract RESUME Contents
This documentation describes some aspects of the memory distribution for parallel environment (message passing). It is written as a complement of some other documentations (mainly the ECMWF documentation) so some (...)
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