Is there any improved capability in Pro?
I am trying to work with UKCP18 climate projection data, which uses a rotated pole projection for the finest-resolution data, and I'm just making zero progress. The blog linked above is 404, but accessing it via the internet archive shows that it relates to GRIB files (not NetCDF) and seems to refer to other workflows outside ArcGIS. In any case, I cannot get Define Projection to work on a NetCDF file, so being able to reproject those data with a custom transformation is a non-starter.
There's tons of potentially very useful data out there but it seems to be unusable in ArcGIS, which is highly frustrating.