Import additional Zonal and Meridional Means into METplus

[CPKalb]

Describe the New Feature

Incorporate the the more complex zonal and meridional means (fromhttps://github.com/zdlawrence/pyzome/blob/master/pyzome/recipes.py ) needed to compute stratospheric metrics into METplus.

Acceptance Testing

I've been testing with the ERA on glade, but this was also suggested: https://www.ncei.noaa.gov/data/sudden-stratospheric-warming-compendium/access/

Time Estimate

Estimate the amount of work required here.
Issues should represent approximately 1 to 3 days of work.

Sub-Issues

Consider breaking the new feature down into sub-issues.

• Add Zonal and Meridional Mean calculation from recipes.py METcalcpy#133

Relevant Deadlines

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Funding Source

2793541

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Define Related Issue(s)

Consider the impact to the other METplus components.

• METplus, MET, METdatadb, METviewer, METexpress, METcalcpy, METplotpy

New Feature Checklist

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• Complete the issue definition above, including the Time Estimate and Funding source.
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  Branch name: feature_<Issue Number>_<Description>
• Complete the development and test your changes.
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• Close this issue.

[CPKalb]

This the the METplus issue to go along with METcalcpy issue 133