issue_comments: 683824965

I did a ctrl-f for zarr in this issue, found nothing, so here's my two cents: it should be possible to write a Datagroup with either zarr or netcdf. I wonder if @emilbiju (posted https://github.com/pydata/xarray/issues/4118 ) has any of that code laying around, could be a starting point. In general, a tree structure to which I can broadcast operations in the same dimensions to different datasets that do not necessary share dimension lengths would solve my use case . This corresponds to bullet point number 3 in https://github.com/pydata/xarray/issues/1092#issuecomment-290159834 . My use case is a set of experiments, that have: the same parameter variables, with different values; the same dimensions with different lengths for their data. The parameters and data would benefit of having a hierarchical naming structure. Currently I build a master dataset containing experiment datasets, with a coordinate for each parameter. Then I map functions over it.