Regridding

[wwieder]

Can we use existing tools for regridding multi-model ensembles (e.g. LUMIP)

[jhamman]

We've been working with xESMF lately. We'll probably need to think about some simple wrapper to handle the multi-model ensemble but that should be doable.

https://xesmf.readthedocs.io/en/latest/

[yelizy]

I have been using CDO operators for remapping. It seems possible that we can call CDO functions in Python scripts. I have not tested yet, but these operators would be useful for zonal statistics, vertical interpolation, etc. calculations.

https://github.com/Try2Code/cdo-bindings
https://code.mpimet.mpg.de/projects/cdo/wiki/Cdo%7Brbpy%7D

[pdirmeyer]

CDO is great for this and so many purposes (subsetting, reformatting, GRIB-NetCDF conversions, etc.) related to the kinds of data we all generate and use - fast and powerful. If it will work, why reinvent the wheel?

[katiedagon]

A good example for our gallery could be a bias plot (model compared to obs), where something needs to be regridded in the process. We could pull examples from ILAMB for this.

[katiedagon]

GeoCAT also has an interpolation function where they migrated the linint2 function from NCL
https://geocat-comp.readthedocs.io/en/latest/user_api/generated/geocat.comp.linint2.html
https://www.ncl.ucar.edu/Document/Functions/Built-in/linint2.shtml

[wwieder]

I used xESMF as suggested by @jhamman, but the current approach lost information around the coasts.