filled out the plotting page a bit. basic instructions for Panoply, a…

…nd meantime suggestions for Python

docs/source/supplement/plotting-output.rst

@@ -1,6 +1,43 @@
 
-
 Plotting GCHP Output
 ====================
 
-todo
+Panoply
+-------
+
+Panoply is useful for quick and easy viewing of GCHP output. 
+Panoply is a grahpical program for plotting geo-referenced data like GCHP's output. 
+It is an intuitive program and it is easy to set up.
+
+.. image:: /_static/panoply_example.png
+   :width: 100%
+
+You can read more about Panoply, including how to install it, `here <https://www.giss.nasa.gov/tools/panoply/>`_.
+
+Some suggestions
+  * If you can mount your cluster's filesystem as a Network File System (NFS) on your local machine, you can install Panoply on your local machine and view your GCHP data through the NFS. 
+  * If your cluster supports a graphical interface, you could install Panoply (administrative priviledges not necessary, provided Java is installed) yourself. 
+  * Alternatively, you could install Panoply on your local machine and use :program:`scp` or similar to transfer files back and forth when you want to view them.
+
+
+.. note::
+
+    To get rid of the missing value bands along face edges, turn interpolation off in the :guilabel:`Array(s)` tab of your plot settings.
+
+Python
+------
+
+Todo: see the :ref:`stretched-grid tutorial's plotting section <sg_plotting_example>` in the meantime.
+
+Some notes:
+
+* `xarray <http://xarray.pydata.org/en/stable/>`_ and `cartopy <https://scitools.org.uk/cartopy/docs/latest/>`_ are the fundamental tools
+* cartopy > 0.18 fixes the "streaking" of grid-boxes crossing the antimeridian with :code:`pcolormesh()`. As of writing, cartopy 0.19 is not yet released. In the
+  meatime you can install it from GitHub with
+
+  .. code-block:: console 
+     
+     $ pip install git+https://github.com/SciTools/cartopy.git
+
+* The cubed-sphere grid is a curvilinear grid, so you need grid-box corners to plot cubed-sphere data with :code:`pcolormesh()`. 
+  See the stretched-grid tutorial for an example.

docs/source/tutorials/stretched-grid.rst

@@ -133,6 +133,8 @@ Run GCHP:
    $ ./gchp.local.run
 
 
+.. _sg_plotting_example:
+
 Plot the output
 ---------------