issue_comments: 719575453

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https://github.com/pydata/xarray/issues/4552#issuecomment-719575453 https://api.github.com/repos/pydata/xarray/issues/4552 719575453 MDEyOklzc3VlQ29tbWVudDcxOTU3NTQ1Mw== 10194086 2020-10-30T14:11:38Z 2020-10-30T14:11:38Z MEMBER

I don't really see through. The

python-traceback UFuncTypeError: ufunc 'multiply' did not contain a loop with signature matching types (dtype('<U6'), dtype('<U6')) -> dtype('<U6') error hints at a dtype problem. The B01:scale_factor = "0.0001" has dtype=<U6 so maybe it fails trying to apply the scale_factor. The other error python traceback RuntimeError: NetCDF: Attempting netcdf-4 operation on netcdf-3 file sounds like a netCDF3 file is pretending to be a netCDF4 file. Also file HLS.S30.T13SDD.2020004.v1.4.hdf tells me it's a hdf4 file. I thought netCDF4 files have to be hdf5 (but I am not sure).

To summarize 1. the file is maybe not meant to be opened as a netCDF but with a hdf library 2. the file may have an issue, either with the metadata or in the way the file is saved 3. if 2. and 3. are not the case, there may be a bug in the netCDF4 library (because you also get the error using netCDF4 without xarray) So I am tagging this as upstream issue.

 
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