issue_comments: 480639727

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https://github.com/pydata/xarray/issues/2870#issuecomment-480639727 https://api.github.com/repos/pydata/xarray/issues/2870 480639727 MDEyOklzc3VlQ29tbWVudDQ4MDYzOTcyNw== 1217238 2019-04-07T23:11:12Z 2019-04-07T23:11:12Z MEMBER

I suppose that this behavior has to do with NaN not available in int64 and the Datasets are not completely overlapping in the altitude dimension.

This is correct.

Alternatively, you could pre-align your data to have the same coordinate labels. Someone could pretty easily add a fill_value to xarray.align(), but this hasn't been done yet: https://github.com/pydata/xarray/issues/2876

 
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