Any plans for supporting NCZarr format?

[mliukis]

Just wondering if support for NCZarr format is in consideration for the xarray.
Thanks!

[shoyer]

You should be able to read NCZarr files via engine='netcdf4' in xarray.open_dataset, which uses the underlying netCDF C library in which NCZarr is implemented. But I don't know if anyone has tested it yet.

We have not yet implemented NCZarr in xarray.open_zarr (via the Zarr Python library). This is something we would be interested in supporting in principle, but it hasn't been implemented yet. There are also still some unresolved questions about how to reconcile the NCZarr convention and what we currently do in Xarray: zarr-developers/zarr-specs#41

[mliukis]

Is there a way to write xarray.Dataset to NCZarr?

[shoyer]

Again, it's probably possible to write to NCZarr via to_netcdf() with engine='netcdf4' if you supply an appropriate URL: https://www.unidata.ucar.edu/blogs/developer/entry/overview-of-zarr-support-in