https://github.com/echeynet/ekman1d

Variable eddy viscosity Ekman layer in the ABL (1D)
https://github.com/echeynet/ekman1d

atmosphere atmospheric-boundary-layer atmospheric-modelling boundar-layer closure eddy-viscosity ekman

Last synced: 7 months ago
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Variable eddy viscosity Ekman layer in the ABL (1D)

• Host: GitHub
• URL: https://github.com/echeynet/ekman1d
• Owner: ECheynet
• License: bsd-3-clause
• Created: 2020-05-15T17:24:25.000Z (over 5 years ago)
• Default Branch: master
• Last Pushed: 2023-08-11T07:40:08.000Z (about 2 years ago)
• Last Synced: 2024-01-29T10:20:02.625Z (over 1 year ago)
• Topics: atmosphere, atmospheric-boundary-layer, atmospheric-modelling, boundar-layer, closure, eddy-viscosity, ekman
• Language: MATLAB
• Size: 906 KB
• Stars: 3
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# Ekman1D

Variable eddy viscosity Ekman layer in the ABL (1D)

[![View Variable eddy viscosity Ekman layer in the ABL (1D) on File Exchange](https://www.mathworks.com/matlabcentral/images/matlab-file-exchange.svg)](https://www.mathworks.com/matlabcentral/fileexchange/74316-variable-eddy-viscosity-ekman-layer-in-the-abl-1d)

[![DOI](https://zenodo.org/badge/264255959.svg)](https://zenodo.org/badge/latestdoi/264255959)



## Summary

Matlab implementation of the solution of the Ekman equations in the atmospheric boundary layer. The flow is assumed to be horizontal and homogeneous, but a height dependent turbulent viscosity can be modelled. The solutions are provided in one dimension.

## Contents

The submission contains

  - The function EkmanAnalytic, which provides an analytical solution to Ekman's equations for a constant eddy viscosity in the atmospheric boundary layer.

  - The solveEkman function, which numerically solves Ekman's equations using an explicit finite difference scheme and allows the use of height-dependent eddy viscosity. The numerical implementation is partly inspired by [1].

  - The function solveEkman_bcp4v.m, which uses the Matlab function bcp4v to solve Ekman's equations.

  - The function scm_bcp4v.m, which is used for more advanced single column models.

  - An example file Example0.mlx which reproduces some of the figures shown in ref [2].

  - An example file documentation_part2.mlx.mlx which uses the scm_bcp4v function.

Any questions, suggestions or comments are welcome.

## References:

[1] Berger, B. W., & Grisogono, B. (1998). The baroclinic, variable eddy viscosity Ekman layer. Boundary-layer meteorology, 87(3), 363-380.

[2] https://www.whoi.edu/science/PO/people/jprice/website/education_scripts.html