Welcome to CROCO / ABL1d coupling’s documentation

The purpose of this tutorial is to present the different steps to set up :

• an idealized simulation with the Atmospheric Boundary Layer 1d (ABL1d) model based on Kilpatrick et al. [2014] case study (Section Run KILPATRICK test cases; see also Kilpatrick et al. [2014], Spall [2007], Ayet and Redelsperger [2019], Lemarié et al. [2021]) ;

• a real case ABL1d - CROCO based on BENGUELA_LR ktest (Section Run BENGUELA_LR test case).

Description of the ABL1d model can be found in Lemarié et al. [2021]. Same version of the ABL1d model described in this paper has been implemented in CROCO.

Note

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

Contents

• 1. New features
  • 1.1. Get the code
  • 1.2. Code modifications
  • 1.3. croco.in
• 2. Run KILPATRICK test cases
  • 2.1. Cold-to-warm case
    • 2.1.1. Installation
    • 2.1.2. Compilation
    • 2.1.3. Simulation
    • 2.1.4. Results
  • 2.2. Warm-to-cold case
    • 2.2.1. Installation
    • 2.2.2. Compilation
    • 2.2.3. Simulation
    • 2.2.4. Results
• 3. Run BENGUELA_LR test case
  • 3.1. Installation
  • 3.2. Prepare 3d atmospheric forcing fields for ABL1d
    • 3.2.1. Get the preprocessing tools for ABL1d
    • 3.2.2. Compilation
    • 3.2.3. Download ERA5 data
    • 3.2.4. Run preprocessing tool
    • 3.2.5. Convert netcdf file into a format readable by CROCO
  • 3.3. Compilation and simulation for BULK_FLUX test case
  • 3.4. Compilation and simulation for ABL1d test case
  • 3.5. Results

References

[1] (1,2)

Thomas Kilpatrick, Niklas Schneider, and Bo Qiu. Boundary Layer Convergence Induced by Strong Winds across a Midlatitude SST Front*. Journal of Climate, 27(4):1698–1718, February 2014. URL: http://journals.ametsoc.org/doi/10.1175/JCLI-D-13-00101.1 (visited on 2022-02-09), doi:10.1175/JCLI-D-13-00101.1.

[2]

Michael A. Spall. Midlatitude Wind Stress–Sea Surface Temperature Coupling in the Vicinity of Oceanic Fronts. Journal of Climate, 20(15):3785–3801, August 2007. URL: http://journals.ametsoc.org/doi/10.1175/JCLI4234.1 (visited on 2022-02-09), doi:10.1175/JCLI4234.1.

[3]

Alex Ayet and Jean‐Luc Redelsperger. An analytical study of the atmospheric boundary‐layer flow and divergence over an SST front. Quarterly Journal of the Royal Meteorological Society, 145(723):2549–2567, July 2019. URL: https://onlinelibrary.wiley.com/doi/10.1002/qj.3578 (visited on 2022-03-31), doi:10.1002/qj.3578.

[4] (1,2)

Florian Lemarié, Guillaume Samson, Jean-Luc Redelsperger, Hervé Giordani, Théo Brivoal, and Gurvan Madec. A simplified atmospheric boundary layer model for an improved representation of air–sea interactions in eddying oceanic models: implementation and first evaluation in NEMO (4.0). Geoscientific Model Development, 14(1):543–572, January 2021. URL: https://gmd.copernicus.org/articles/14/543/2021/ (visited on 2021-04-08), doi:10.5194/gmd-14-543-2021.