CCPP Framework Meeting Minutes 2023 02 27

Agenda

• GitHub issues/PRs
• New items
• Updates
• Other business
  • notes

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Attendees: Michael Kavulich, Cheryl Craig, Adam Harrington, Matthew Dawson, Dustin Swales, Courtney Peverly, Jesse Nusbaumer, Francis Vitt, Grant Fiel, John Michalakes, Jordan Powers, Alex Reinecke.

GitHub issues/PRs

• 458: Unit converter does not handle a variable with units = 1
  • Fix for capgen in PR 460
    • Merged
  • Fix for ccpp_prebuild done (https://github.com/mkavulich/ccpp-framework/tree/bugfix/unit_converter_1)
    • Working on implementing a unit test to cover this case, will open PR by end of day.
• ccpp-physics 999: Allow multiple instances of CCPP physics in single executable for ensemble DA

GitHub notes

New items for discussion

• Items from Jesse

  • Does NOAA use "geopotential_height"? If it does, do you have any issues with adding a suffix such as "wrt_surface" or "wrt_sea_level"? Basically the CGD scientists wanted the geopotential height standard name(s) to specify a particular vertical reference level.

  • Does NOAA use "reference_pressure". If it does, is your "reference pressure" a single scalar value, or does it vary in space (such as via a reference profile with pressure that changes with height)?

Updates from last time

Previous notes

Other business

Notes

#999 Multiple instances of ccpp-physics

John Michalakes and Dom added instances for ccpp physics. John will open a draft PR soon.

Jesse on standard_names,

“geopotential_height” more specific? Dom, if we omit qualifier, assume wrt to mean sea level by default. Add specifier to wrt to local surface. reference_pressure in CAM. Grant, we have standard_atmospheric_pressure, scalar in Pa. Some schemes have their own local value within their schemes. Jesse, Can we make reference_pressure 1000?. Grant. Yes. Pressure in layer. Reference_profile_pressure? Add reference_pressure in atmospheric layer? PRs for ESCOMP standard_names repo? Up to the developer, be sensible.