html_url,issue_url,id,node_id,user,created_at,updated_at,author_association,body,reactions,performed_via_github_app,issue
https://github.com/pydata/xarray/issues/5987#issuecomment-974505817,https://api.github.com/repos/pydata/xarray/issues/5987,974505817,IC_kwDOAMm_X846FcdZ,33153877,2021-11-19T22:10:48Z,2021-11-19T22:10:48Z,NONE,"@mathause Sorry for the late reply! I've been very busy lately, but yes, please move it to a discussion.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,1052918815
https://github.com/pydata/xarray/issues/5987#issuecomment-968380475,https://api.github.com/repos/pydata/xarray/issues/5987,968380475,IC_kwDOAMm_X845uFA7,33153877,2021-11-14T22:56:32Z,2021-11-14T22:56:44Z,NONE,"@spencerkclark Thanks for the suggestion! I haven't made any serious tests yet, but my initial tests worked fine =)","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,1052918815
https://github.com/pydata/xarray/issues/5987#issuecomment-968291159,https://api.github.com/repos/pydata/xarray/issues/5987,968291159,IC_kwDOAMm_X845tvNX,33153877,2021-11-14T13:28:20Z,2021-11-14T13:28:20Z,NONE,"I decided to also look at what happens when you plot with contourf. In this case both the plot of the original data and the interpolated data have a white line at the central longitude, but the interpolated data also has white lines at the poles:

**Original MPI-ESM**

![contour_subset](https://user-images.githubusercontent.com/33153877/141683012-a4a003e6-d9f0-4003-8c9c-64fe20809a88.png)

**Interpolated MPI-ESM**

![contour_interp](https://user-images.githubusercontent.com/33153877/141683016-9de823d3-517e-4b2a-907f-fc541846ff79.png)

Here's the code that produced the plots:

```python
import xarray as xr
import matplotlib.pyplot as plt
import cartopy.crs as ccrs

cesm2_waccm = xr.open_dataset('pr_day_CESM2-WACCM_ssp245_r2i1p1f1_gn_20750101-20841231.nc')
mpi = xr.open_dataset('pr_day_MPI-ESM1-2-LR_ssp245_r1i1p1f1_gn_20750101-20941231.nc')

cesm2_waccm_subset = cesm2_waccm.sel(time=slice('2075-01-01', '2075-12-31')).mean(dim='time')
mpi_subset = mpi.sel(time=slice('2075-01-01', '2075-12-31')).mean(dim='time')

map_proj = ccrs.PlateCarree()

# Now this also produces a white line.
plot = mpi_subset.pr.plot.contourf(subplot_kws={'projection': map_proj})
plot.axes.coastlines()
plt.show()

mpi_interp = mpi_subset.interp(lat=cesm2_waccm_subset['lat'], lon=cesm2_waccm_subset['lon'])

# Has a white line at the central longitude.
plot = mpi_interp.pr.plot.contourf(subplot_kws={'projection': map_proj})
plot.axes.coastlines()
plt.show()
```
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