Fix SST/SSS WOA13 comparison and equatorial thermal/zonal velocity examples

[fabiobdias]

Closes #269 and closes #268

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[navidcy]

@hrsdawson can you review this? as part of the review can you ensure the two notebooks run if you do "restart kernel and run all cells"?

[navidcy]

@fabiobdias please uncomment also the other notebook from the test file

[navidcy]

lgtm except what are all these LOOOONG lists of warnings about date time?

[navidcy]

@micaeljtoliveira do you know why these looooong warnings come up?

[rmholmes]

I checked these out and ran them and they all look good to me. Figures look consistent with the results I expect. Thanks @fabiobdias

My only comments would be:

• The equatorial longitude-depth slices are in both the Compare_SST_SSS... and Equatorial_thermal... files, they could probably just be in the Equatorial_thermal... file.
• The WOA database should probably be put somewhere public so that it does not have to be regenerated by every user (although it doesn't take long, so probably don't bother).

I think these are good example scripts that could/should be picked up for ACCESS-OM3 and/or the NRI for standard model validation checks.

[micaeljtoliveira]

@micaeljtoliveira do you know why these looooong warnings come up?

Sorry, no idea 😞