Add U10 and CERES EBAF TOA v4.1 to polar maps

[chengzhuzhang]

Description

The CERES EBAF TOA variables are accidentally left out a while ago when transitioning to use CERES EBAF v4.1 from v4.0. This PR added back these variables, as well as surface wind speed U10 to compare with ERA5 data.
Example output for these new variables are available here.

• Closes [Bug]: Add new fields to Polar set #965

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• My changes generate no new warnings
• Any dependent changes have been merged and published in downstream modules

If applicable:

• New and existing unit tests pass with my changes (locally and CI/CD build)
• I have added tests that prove my fix is effective or that my feature works
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have noted that this is a breaking change for a major release (fix or feature that would cause existing functionality to not work as expected)

[chengzhuzhang]

@wlin7 This PR added the variables that you requested. Could you please give a review of the variable list, as well as the results? Thank you for catching the issue, and suggesting the change!

[chengzhuzhang]

@wlin7 just a gentle reminder about reviewing the results for this PR, thanks!

[wlin7]

Thank you for this addition, @chengzhuzhang . Sorry I didn't notice this email thread until the latest when it was merged.

[chengzhuzhang]

no worries, wuyin @wlin7. We are planning to release a bug fix version for addressing recent errors, and try to wrap up some bug fix PRs. Feel free to let us know if more issues or new features need to be addressed. Cheers.