CCPP Framework Meeting Minutes 2021 08 31

Agenda

New business

• Time to reschedule meeting?

Old business

• Transition to capgen.py
• Dictionary of standard names

Reschedule meeting?

• We almost did it ... almost: https://doodle.com/poll/qv285pkbm98iv8bx
• Let's try another doodle with Thu 8.30-9.30am

Transition to capgen.py

• Steve currently refactoring code for upcoming changes, improving flow of configuration information in preparation for variable actions
• NCAR will create an issue to express that they want to also use the ccpp-framework main branch in the near future
  • NOAA will plan to transition to a dedicated branch (in its own fork) if it is not possible to use tags/releases of ccpp-framework main (the latter is preferred)
  • This requires ironing out a testing plan for the main branch, which is somewhat similar to the ongoing ccpp-physics governance discussion
  • ccpp-physics governance slides are a useful starting point, but it may be possible to use tags/releases for the ccpp-framework (and parallel branches for ccpp-physics for the models that need it)
    • CESM is working on a system that provides flexibility for setting runtime parameters and documenting them

Dictionary of standard names

• All PRs regarding rules have been merged
• Status of "the" PR https://github.com/ESCOMP/CCPPStandardNames/pull/13?
  • Updates for dimensionless variables are in - thanks Grant
  • Are long names consistent with standard names after all the updates? Yes
  • Rules discuss mass mixing ratios, volume mixing ratios, volume fraction (volumetric mixing ratios), define dry air, moist air
  • Host-model specific entries in the dictionary
    • Keep everything in the dictionary for now and then create software that scans host models and produces the relevant information
  • PR 13 merged during the meeting!
• Dom started working on cleanup up the _real vegetation/soil/slope type variables in FV3
  • Currently working on writing out integer variables
  • We took those _real vegetation/soil/slope type variables out of PR 13
• Dom also doing some ccpp-framework development(ccpp_prebuild only affected) that checks that every variable that should be allocated (per active attribute) is indeed allocated - adding this to ccpp_prebuild is faster than debugging the current issues on Expanse manually
  • Steve and Dom added information to issue #328 (capgen must implement active keyword) to define what capgen must be able to do