issue_comments: 1020572086

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https://github.com/pydata/xarray/issues/6188#issuecomment-1020572086 https://api.github.com/repos/pydata/xarray/issues/6188 1020572086 IC_kwDOAMm_X8481LG2 13301940 2022-01-24T21:36:06Z 2022-01-24T21:39:01Z MEMBER

@zxdawn,

Thank you for the thorough, reproducible example.

Per Scipy's documentation, RegularGridInterpolator uses fill_value=None for extrapolation

```python In [23]: da.interp(x=x, y=y, kwargs={"fill_value": None})

Out[23]: <xarray.DataArray (z: 3)> array([-0.26074336, 0.63496063, -0.46643289]) Coordinates: x (z) float64 -0.5 1.5 2.5 y (z) float64 0.15 0.25 0.35 Dimensions without coordinates: z ```

 
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