diff --git a/core/xarray/xarray-intro.ipynb b/core/xarray/xarray-intro.ipynb
index 0146dca90a..8ac5807162 100644
--- a/core/xarray/xarray-intro.ipynb
+++ b/core/xarray/xarray-intro.ipynb
@@ -12071,7 +12071,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 63,
+   "execution_count": 67,
    "metadata": {},
    "outputs": [
     {
@@ -12529,19 +12529,19 @@
        "      dtype=float32)\n",
        "Coordinates:\n",
        "  * time1      (time1) datetime64[ns] 8B 1993-03-13\n",
-       "  * isobaric1  (isobaric1) float32 116B 100.0 125.0 150.0 ... 950.0 975.0 1e+03</pre><div class='xr-wrap' style='display:none'><div class='xr-header'><div class='xr-obj-type'>xarray.DataArray</div><div class='xr-array-name'>'Temperature_isobaric'</div><ul class='xr-dim-list'><li><span class='xr-has-index'>time1</span>: 1</li><li><span class='xr-has-index'>isobaric1</span>: 29</li></ul></div><ul class='xr-sections'><li class='xr-section-item'><div class='xr-array-wrap'><input id='section-eaab3711-6c47-4a0c-881a-c0b9e66166c2' class='xr-array-in' type='checkbox' checked><label for='section-eaab3711-6c47-4a0c-881a-c0b9e66166c2' title='Show/hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-array-preview xr-preview'><span>215.1 215.8 217.2 217.8 215.8 216.1 ... 271.2 272.7 274.1 275.5 277.0</span></div><div class='xr-array-data'><pre>array([[215.078  , 215.76935, 217.243  , 217.82663, 215.83487, 216.10933,\n",
+       "  * isobaric1  (isobaric1) float32 116B 100.0 125.0 150.0 ... 950.0 975.0 1e+03</pre><div class='xr-wrap' style='display:none'><div class='xr-header'><div class='xr-obj-type'>xarray.DataArray</div><div class='xr-array-name'>'Temperature_isobaric'</div><ul class='xr-dim-list'><li><span class='xr-has-index'>time1</span>: 1</li><li><span class='xr-has-index'>isobaric1</span>: 29</li></ul></div><ul class='xr-sections'><li class='xr-section-item'><div class='xr-array-wrap'><input id='section-e1c60aa3-7bb8-4278-a402-38f51cd48f1c' class='xr-array-in' type='checkbox' checked><label for='section-e1c60aa3-7bb8-4278-a402-38f51cd48f1c' title='Show/hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-array-preview xr-preview'><span>215.1 215.8 217.2 217.8 215.8 216.1 ... 271.2 272.7 274.1 275.5 277.0</span></div><div class='xr-array-data'><pre>array([[215.078  , 215.76935, 217.243  , 217.82663, 215.83487, 216.10933,\n",
        "        219.99902, 224.66118, 228.80576, 234.88701, 238.78503, 242.66309,\n",
        "        246.44807, 249.26636, 250.84995, 253.37354, 257.0429 , 259.08398,\n",
        "        260.97955, 262.98364, 264.82138, 266.5198 , 268.22467, 269.7471 ,\n",
        "        271.18216, 272.66815, 274.13037, 275.54718, 276.97675]],\n",
-       "      dtype=float32)</pre></div></div></li><li class='xr-section-item'><input id='section-6ca5d135-ad30-44d3-8f59-79669609cd53' class='xr-section-summary-in' type='checkbox'  checked><label for='section-6ca5d135-ad30-44d3-8f59-79669609cd53' class='xr-section-summary' >Coordinates: <span>(2)</span></label><div class='xr-section-inline-details'></div><div class='xr-section-details'><ul class='xr-var-list'><li class='xr-var-item'><div class='xr-var-name'><span class='xr-has-index'>time1</span></div><div class='xr-var-dims'>(time1)</div><div class='xr-var-dtype'>datetime64[ns]</div><div class='xr-var-preview xr-preview'>1993-03-13</div><input id='attrs-32da0a88-b6f4-49ec-8f84-72176f2acd92' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-32da0a88-b6f4-49ec-8f84-72176f2acd92' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-a545d78c-98ca-4946-885a-7acc2d80a732' class='xr-var-data-in' type='checkbox'><label for='data-a545d78c-98ca-4946-885a-7acc2d80a732' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>standard_name :</span></dt><dd>time</dd><dt><span>long_name :</span></dt><dd>GRIB forecast or observation time</dd><dt><span>_CoordinateAxisType :</span></dt><dd>Time</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;1993-03-13T00:00:00.000000000&#x27;], dtype=&#x27;datetime64[ns]&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span class='xr-has-index'>isobaric1</span></div><div class='xr-var-dims'>(isobaric1)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>100.0 125.0 150.0 ... 975.0 1e+03</div><input id='attrs-1c48d34a-0241-4875-aef3-664e375b5204' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-1c48d34a-0241-4875-aef3-664e375b5204' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-bb319771-8d8b-48cc-b97e-581059238e99' class='xr-var-data-in' type='checkbox'><label for='data-bb319771-8d8b-48cc-b97e-581059238e99' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>units :</span></dt><dd>hPa</dd><dt><span>long_name :</span></dt><dd>Isobaric surface</dd><dt><span>positive :</span></dt><dd>down</dd><dt><span>Grib_level_type :</span></dt><dd>100</dd><dt><span>_CoordinateAxisType :</span></dt><dd>Pressure</dd><dt><span>_CoordinateZisPositive :</span></dt><dd>down</dd></dl></div><div class='xr-var-data'><pre>array([ 100.,  125.,  150.,  175.,  200.,  225.,  250.,  275.,  300.,  350.,\n",
+       "      dtype=float32)</pre></div></div></li><li class='xr-section-item'><input id='section-a5deed30-b04f-45ea-9197-661072f6ea73' class='xr-section-summary-in' type='checkbox'  checked><label for='section-a5deed30-b04f-45ea-9197-661072f6ea73' class='xr-section-summary' >Coordinates: <span>(2)</span></label><div class='xr-section-inline-details'></div><div class='xr-section-details'><ul class='xr-var-list'><li class='xr-var-item'><div class='xr-var-name'><span class='xr-has-index'>time1</span></div><div class='xr-var-dims'>(time1)</div><div class='xr-var-dtype'>datetime64[ns]</div><div class='xr-var-preview xr-preview'>1993-03-13</div><input id='attrs-f303cd24-7855-499b-adc4-e740cf0318a9' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-f303cd24-7855-499b-adc4-e740cf0318a9' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-b191949a-5c24-4715-b695-c403e94890c2' class='xr-var-data-in' type='checkbox'><label for='data-b191949a-5c24-4715-b695-c403e94890c2' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>standard_name :</span></dt><dd>time</dd><dt><span>long_name :</span></dt><dd>GRIB forecast or observation time</dd><dt><span>_CoordinateAxisType :</span></dt><dd>Time</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;1993-03-13T00:00:00.000000000&#x27;], dtype=&#x27;datetime64[ns]&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span class='xr-has-index'>isobaric1</span></div><div class='xr-var-dims'>(isobaric1)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>100.0 125.0 150.0 ... 975.0 1e+03</div><input id='attrs-0329786b-6be4-41a0-bd26-a713daf9f8f4' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-0329786b-6be4-41a0-bd26-a713daf9f8f4' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-195e95da-b4ff-4cc3-877c-b8273ddf5a78' class='xr-var-data-in' type='checkbox'><label for='data-195e95da-b4ff-4cc3-877c-b8273ddf5a78' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>units :</span></dt><dd>hPa</dd><dt><span>long_name :</span></dt><dd>Isobaric surface</dd><dt><span>positive :</span></dt><dd>down</dd><dt><span>Grib_level_type :</span></dt><dd>100</dd><dt><span>_CoordinateAxisType :</span></dt><dd>Pressure</dd><dt><span>_CoordinateZisPositive :</span></dt><dd>down</dd></dl></div><div class='xr-var-data'><pre>array([ 100.,  125.,  150.,  175.,  200.,  225.,  250.,  275.,  300.,  350.,\n",
        "        400.,  450.,  500.,  550.,  600.,  650.,  700.,  725.,  750.,  775.,\n",
        "        800.,  825.,  850.,  875.,  900.,  925.,  950.,  975., 1000.],\n",
-       "      dtype=float32)</pre></div></li></ul></div></li><li class='xr-section-item'><input id='section-26c57473-a1ae-4681-b70c-4cd76c3b8ee2' class='xr-section-summary-in' type='checkbox'  ><label for='section-26c57473-a1ae-4681-b70c-4cd76c3b8ee2' class='xr-section-summary' >Indexes: <span>(2)</span></label><div class='xr-section-inline-details'></div><div class='xr-section-details'><ul class='xr-var-list'><li class='xr-var-item'><div class='xr-index-name'><div>time1</div></div><div class='xr-index-preview'>PandasIndex</div><input type='checkbox' disabled/><label></label><input id='index-190ba715-164c-4c86-bdaa-e989846352e3' class='xr-index-data-in' type='checkbox'/><label for='index-190ba715-164c-4c86-bdaa-e989846352e3' title='Show/Hide index repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-index-data'><pre>PandasIndex(DatetimeIndex([&#x27;1993-03-13&#x27;], dtype=&#x27;datetime64[ns]&#x27;, name=&#x27;time1&#x27;, freq=None))</pre></div></li><li class='xr-var-item'><div class='xr-index-name'><div>isobaric1</div></div><div class='xr-index-preview'>PandasIndex</div><input type='checkbox' disabled/><label></label><input id='index-6e0cf719-fec9-4791-9594-0541c2ade5b9' class='xr-index-data-in' type='checkbox'/><label for='index-6e0cf719-fec9-4791-9594-0541c2ade5b9' title='Show/Hide index repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-index-data'><pre>PandasIndex(Index([ 100.0,  125.0,  150.0,  175.0,  200.0,  225.0,  250.0,  275.0,  300.0,\n",
+       "      dtype=float32)</pre></div></li></ul></div></li><li class='xr-section-item'><input id='section-6d7bb1ce-ea8a-42b1-a747-d167f1dd347d' class='xr-section-summary-in' type='checkbox'  ><label for='section-6d7bb1ce-ea8a-42b1-a747-d167f1dd347d' class='xr-section-summary' >Indexes: <span>(2)</span></label><div class='xr-section-inline-details'></div><div class='xr-section-details'><ul class='xr-var-list'><li class='xr-var-item'><div class='xr-index-name'><div>time1</div></div><div class='xr-index-preview'>PandasIndex</div><input type='checkbox' disabled/><label></label><input id='index-419f6275-967c-4317-8b6e-000cf30c4a33' class='xr-index-data-in' type='checkbox'/><label for='index-419f6275-967c-4317-8b6e-000cf30c4a33' title='Show/Hide index repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-index-data'><pre>PandasIndex(DatetimeIndex([&#x27;1993-03-13&#x27;], dtype=&#x27;datetime64[ns]&#x27;, name=&#x27;time1&#x27;, freq=None))</pre></div></li><li class='xr-var-item'><div class='xr-index-name'><div>isobaric1</div></div><div class='xr-index-preview'>PandasIndex</div><input type='checkbox' disabled/><label></label><input id='index-b8e5fe6d-472d-440e-8755-a03b28dca355' class='xr-index-data-in' type='checkbox'/><label for='index-b8e5fe6d-472d-440e-8755-a03b28dca355' title='Show/Hide index repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-index-data'><pre>PandasIndex(Index([ 100.0,  125.0,  150.0,  175.0,  200.0,  225.0,  250.0,  275.0,  300.0,\n",
        "        350.0,  400.0,  450.0,  500.0,  550.0,  600.0,  650.0,  700.0,  725.0,\n",
        "        750.0,  775.0,  800.0,  825.0,  850.0,  875.0,  900.0,  925.0,  950.0,\n",
        "        975.0, 1000.0],\n",
-       "      dtype=&#x27;float32&#x27;, name=&#x27;isobaric1&#x27;))</pre></div></li></ul></div></li><li class='xr-section-item'><input id='section-015c6fe6-3ef6-4a11-88b6-d9600e03ba81' class='xr-section-summary-in' type='checkbox' disabled ><label for='section-015c6fe6-3ef6-4a11-88b6-d9600e03ba81' class='xr-section-summary'  title='Expand/collapse section'>Attributes: <span>(0)</span></label><div class='xr-section-inline-details'></div><div class='xr-section-details'><dl class='xr-attrs'></dl></div></li></ul></div></div>"
+       "      dtype=&#x27;float32&#x27;, name=&#x27;isobaric1&#x27;))</pre></div></li></ul></div></li><li class='xr-section-item'><input id='section-b7723f32-2e29-48de-9c26-56323ca1eff0' class='xr-section-summary-in' type='checkbox' disabled ><label for='section-b7723f32-2e29-48de-9c26-56323ca1eff0' class='xr-section-summary'  title='Expand/collapse section'>Attributes: <span>(0)</span></label><div class='xr-section-inline-details'></div><div class='xr-section-details'><dl class='xr-attrs'></dl></div></li></ul></div></div>"
       ],
       "text/plain": [
        "<xarray.DataArray 'Temperature_isobaric' (time1: 1, isobaric1: 29)> Size: 116B\n",
@@ -12556,7 +12556,7 @@
        "  * isobaric1  (isobaric1) float32 116B 100.0 125.0 150.0 ... 950.0 975.0 1e+03"
       ]
      },
-     "execution_count": 63,
+     "execution_count": 67,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -12565,7 +12565,7 @@
     "temps = ds.Temperature_isobaric\n",
     "co_temps = temps.sel(x=slice(-182, 424), y=slice(-1450, -990))\n",
     "prof = co_temps.mean(dim=['x', 'y'])\n",
-    "prof"
+    "prof "
    ]
   },
   {