Stanford collaboration attribution

Referencing Prof Aditi's group in the preamble.

notebooks/Estimating_(Temperature)_Distributions_With_DataCommons_.ipynb

@@ -25,6 +25,8 @@
       "cell_type": "markdown",
       "source": [
         "# Preamble\n",
+        "This work was done in collaboration with Prof. Aditi Sheshadri's research group at Stanford University.\n",
+        "\n",
         "**Context**\n",
         "\n",
         "   The climate at a specific location (as recorded by observations) can be seen as a sample from a \"real\" probability distribution function (PDF). We have a number of climate models, from many agencies across the world, that use physics to approximate this underlying PDF. Each simulation run of each of these models can be seen as a sample from the PDF embodied by the code in that model.\n",
@@ -914,4 +916,4 @@
       "outputs": []
     }
   ]
-}
+}