vtx-mpas-meshes

Creation and analysis of MPAS-WRF meshes by Vortex

Work under progress. Example of regional mesh:

Created by Marta Gil Bardají. Contact email: [email protected]

Installation Guide

To obtain a local copy of the code, clone this github repository meshes. Note that you need permission to do so.

$ git clone [email protected]:marta-gil/vtx-mpas-meshes.git

The necessary conda environment can be created using the environment.yml file present in the vtx-mpas-meshes repository cloned from github:

$ conda env create -n <envname> -f <path-to-environment.yml-file>

The conda environment contains:

• mpas-tools & jigsaw for mesh creation
• xarray, geopy, cartopy for mesh visualization
• packages for documentation
• jupyter notebook

The environment should be activated to run the scripts in this repository.

$ conda activate <envname>

Then you can install the scripts of this repository by installing the vtxmpasmeshes source files using the setup.py file.

(<envname>) $ pyhton setup.py install

To be able to run the Jupyter Notebooks, add the environment to ipykernel:

(<envname>) $ python -m ipykernel install --user --name=<envname>

and a successful message similar to this should appear:

Installed kernelspec <envname> in /home/<username>/.local/share/jupyter/kernels/<envname>

Mesh generation

Creates global and regional MPAS meshes based on global latlon resolution maps. The focus is on symmetric resolutions that are highest at a certain area of the planet and decrease radially.

Based on https://github.com/pedrospeixoto/MPAS-PXT/blob/master/grids/utilities/jigsaw/spherical_grid.py by Pedro S. Peixoto [email protected].

It uses:

• MPAS-Tools http://mpas-dev.github.io/MPAS-Tools/stable/mesh_creation.html#spherical-meshes
• jigsaw: https://github.com/dengwirda/jigsaw-python/tree/master/tests