issue_comments: 872477132

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https://github.com/pydata/xarray/issues/5559#issuecomment-872477132 https://api.github.com/repos/pydata/xarray/issues/5559 872477132 MDEyOklzc3VlQ29tbWVudDg3MjQ3NzEzMg== 2448579 2021-07-01T18:56:41Z 2021-07-01T18:59:27Z MEMBER

Is it correct that xarray ends up calling dask.array.mean() on the pint.Quantity(dask.Array) object inside the DataArray?

Yes that's correct. See https://github.com/pydata/xarray/blob/c472f8a4c79f872edb9dcd7825f786ecb9aff5c0/xarray/core/duck_array_ops.py#L49-L51

It may be time to update this method since we now depend on a minimum numpy version that supports NEP-18.

cc @shoyer

EDIT: You get there from _create_nan_agg_method: https://github.com/pydata/xarray/blob/c472f8a4c79f872edb9dcd7825f786ecb9aff5c0/xarray/core/duck_array_ops.py#L347

 
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