Check some formatting issues on NCL_sat_3.py

[kafitzgerald]

Describe the bug
NCL_sat_3.py could use some attention.

https://geocat-examples.readthedocs.io/en/latest/gallery/MapProjections/NCL_sat_3.html

Expected behavior

• Outline surrounding the full plot
• Better looking colorbar ticks (or at least not inconsistent ones)
• Better looking RHS labels (though this may be part of the NCL replication)

Screenshots

[kafitzgerald]

Sounds like this (the weird ticks on the colorbar) is a broader issue in chatting w/ Anissa. Might take a look a little sooner to better understand what's going on.

[kafitzgerald]

It looks like the contour plots now (not sure when this started) have minor ticks on the colorbars that align with the discrete colormap from the contouring.

It's not really clear to me why these examples plots are contoured in the first place and I think this problem really stems from us using some of the matplotlib functionality in a way it wasn't really intended, but 🤷🏻‍♀️.

These minor ticks can be turned off though so that's probably the easy fix for the colorbar tick issue. Unfortunately it doesn't appear to just be a parameter we can pass so it's a little more code.