Do chunk sizes have to be the same for all variables in a given dimension?

[jeromekelleher]

Does xarray mandate that Zarr chunk sizes must be the same for all variables with a given dimension? This is quite a hard restriction if so, as we can have fields like PL that are many times larger than GTs, and good chunk size choices for the two would be quite different.

[hammer]

I recall some uniform chunk size discussion on pydata/xarray#2225 a while back, digging through my notes for more...