Welcome to Meso-NH / WW3 / CROCO coupling’s documentation

This documentation is intended for Meso-NH users who are interested to learn how to couple it with WW3 and/or CROCO models using the OASIS coupler.

Note

This documentation is subject to change, so don’t hesitate to send me your improvements, corrections, etc …

Contents

• 1. Introduction
• 2. Requirements
• 3. Installation
  • 3.1. Meso-NH/SurfEx (+ NetCDF and OASIS)
  • 3.2. WW3
  • 3.3. CROCO
• 4. Compilation
  • 4.1. Meso-NH/SurfEx (+ NetCDF and OASIS)
  • 4.2. WW3
    • 4.2.1. Old compilation’s procedure (w3_make)
    • 4.2.2. New compilation’s procedure (cmake)
  • 4.3. CROCO
• 5. Pre-processing
  • 5.1. Tree template
  • 5.2. Meso-NH/SurfEx
    • 5.2.1. Prepare the horizontal grid : PREP_PGD
    • 5.2.2. Prepare the vertical grid, IC and LBC : PREP_REAL_CASE
    • 5.2.3. Preparing the namelist for the coupled simulation : EXSEG1.nam
    • 5.2.4. List of necessary files for MNH : 1_input_mnh
  • 5.3. WW3
    • 5.3.1. Create the files containing the grid
    • 5.3.2. Prepare the grid : ww3_grid
    • 5.3.3. Prpare the forcing (wind) for spinup simulation : ww3_prnc
    • 5.3.4. Prepare the LBC : ww3_bound
    • 5.3.5. Prepare the IC : spinup (ww3_shel)
    • 5.3.6. Prepare namelist for the coupled simulation : ww3_shel.nml
    • 5.3.7. List of necessary files for WW3 : 2_input_ww3
  • 5.4. CROCO
    • 5.4.1. Download croco_pytools
    • 5.4.2. Create the horizontal grid
    • 5.4.3. Create the IC and LBC
    • 5.4.4. Prepare the namelist for the coupled simulation : croco.in
    • 5.4.5. List of necessary files for CROCO : 3_input_croco
  • 5.5. OASIS
    • 5.5.1. Create remap files
    • 5.5.2. Prepare the namelist for the coupled simulation: namcouple
    • 5.5.3. List of necessary files in the directory 4_input_oasis
• 6. Simulation
  • 6.1. Run a coupled simulation
  • 6.2. Outputs of a coupled simulation
  • 6.3. Changing the coupling time step
• 7. To go further
  • 7.1. OASIS
    • 7.1.1. Introduction
    • 7.1.2. Installation and compilation
    • 7.1.3. Functions implemented in models
    • 7.1.4. Description of the namcouple
  • 7.2. LAG concept
  • 7.3. Meso-NH/SurfEx
    • 7.3.1. Tree structure of Meso-NH/SurfEx
    • 7.3.2. Preparing initial files for Meso-NH
    • 7.3.3. Description of the EXSEG1.nam

References

[1]

A. Voldoire, B. Decharme, J. Pianezze, C. Lebeaupin Brossier, F. Sevault, L. Seyfried, V. Garnier, S. Bielli, S. Valcke, A. Alias, M. Accensi, F. Ardhuin, M.-N. Bouin, V. Ducrocq, S. Faroux, H. Giordani, F. Léger, P. Marsaleix, R. Rainaud, J.-L. Redelsperger, E. Richard, and S. Riette. SURFEX v8.0 interface with OASIS3-MCT to couple atmosphere with hydrology, ocean, waves and sea-ice models, from coastal to global scales. Geoscientific Model Development, 10(11):4207–4227, November 2017. URL: https://www.geosci-model-dev.net/10/4207/2017/ (visited on 2018-08-06), doi:10.5194/gmd-10-4207-2017.

[2]

J. Pianezze, C. Barthe, S. Bielli, P. Tulet, S. Jullien, G. Cambon, O. Bousquet, M. Claeys, and E. Cordier. A New Coupled Ocean-Waves-Atmosphere Model Designed for Tropical Storm Studies: Example of Tropical Cyclone Bejisa (2013-2014) in the South-West Indian Ocean. Journal of Advances in Modeling Earth Systems, 10(3):801–825, March 2018. URL: http://doi.wiley.com/10.1002/2017MS001177 (visited on 2018-08-06), doi:10.1002/2017MS001177.