issue_comments: 1486817329

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https://github.com/pydata/xarray/issues/7691#issuecomment-1486817329 https://api.github.com/repos/pydata/xarray/issues/7691 1486817329 IC_kwDOAMm_X85Ynwgx 5821660 2023-03-28T12:41:43Z 2023-03-28T12:41:43Z MEMBER

As this doesn't surface that often it might just happen here by accident. If the _FillValue/missing_value would be -32768 then the issue would not manifest.

So for NetCDF the default fillvalue for NC_SHORT (int16) is -32767. That means the promotion to float32 instead the needed float64 is the problem here (floating point precision).

 
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