title: How to extract CMIP6 data by using xarray
body: <p>I am trying to extract a specific location temperature data from CMIP6 nc file. I am using the xarray. My current code is like</p>
  <pre><code>ds = xr.open_mfdataset(&quot;path to the .cn files&quot;)
  ds['tas'].sel(lon=180+true_lon, lat=true_lat, method='nearest').plot()
  plt.show()
  </code></pre>
  <p>I use the <code>180+true_lon</code> because the longitude range of the NC data is 0-360.</p>
  <p>I am wondering am I did it correctly? Is there any way I can plot this coordinate on the map as a point? I hope to make sure I am extracting the data from the correct location.</p>