Add OSNAP sections to standard_transport_sections

[milenaveneziani]

This adds two new transect features to standard_transport_sections: the OSNAP arrays West (Newfoundland to Greenland) and East (Greenland to Scotland). A plot of the transects is included below.

[pep8speaks]

Hello @milenaveneziani! Thanks for updating this PR. We checked the lines you've touched for PEP 8 issues, and found:

• In the file feature_creation_scripts/transport_transects/OSNAPsections.py:

Line 11:1: E722 do not use bare 'except'
Line 49:81: E501 line too long (81 > 80 characters)
Line 83:81: E501 line too long (81 > 80 characters)

Comment last updated at 2021-03-23 14:52:22 UTC

[milenaveneziani]

@xylar: here are the transect additions we discussed over email. I think I have followed the correct workflow, but let me know if you have any comments. Thanks.

[milenaveneziani]

I decided to make a new tag for these sections: arctic_sections, so that we can make a separate arctic_sections file and not add these to the standard_transport_sections that we normally use for computing volume transport in MPAS-Analysis.

[xylar]

This looks great as well!

[milenaveneziani]

Thanks @xylar!