CCPP Framework Meeting Minutes 2024 12 19

Agenda

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

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Attendees: Michael Kavulich, Cheryl Craig, Dustin Swales, Jesse Nusbaumer, Dom Heinzeller, Courtney Peverley, Michael Waxmonsky, RhaeSung Kim, Jordan Powers, Soren Rasmussen

GitHub issues/PRs

CCPP Framework (issues, PRs, discussions)

• Bugfix for variables in multiple groups #618

Drafts

• DRAFT TO DISCUSS: Add support and testing for equivalent units #571

• Testing refactor #612

Standard names (issues, PRs, discussions)

• Update StandardNamesRules.rst: add _due_to_planetary_boundary_layer #80

  • Merged (with updated commit message)

• Add/modify skin temperature at surface variables. #84

  • Pinged Steve Vahl to ask the status

• add emissions names #86

  • Had some conversation and updated suggested changes, waiting to hear back

• Second rules update in v1 branch, update names, update write_standard_name_table.py to allow for subsections #87

  • PR to release/v1 branch

New items for discussion

Updates from last time

Previous notes

Other business

Offer suggestions/comments on development workflow rules:

• https://docs.google.com/document/d/1iMh_iKsUrB_mOMF6lGkFggG85JV62NFkTjKJboqWvV8/edit?tab=t.0

Meeting notes

CCPP Framework

• Bufix for variables in multiple groups (#618)
  • Dustin to review
• Testing refactor (#612)
  • Michael W to keep targeted to develop branch; get up to date
  • Still draft, but would appreciate informal feedback on design

Standard Names

• Add due_to_PBL (#80)
  • merged
• add/modify skin temperature at surface variables (#84)
  • Change sea => ocean; haven’t heard from Steve Vahl
• Add emissions names (#86)
  • Michael K iterating with Jerome
  • Jesse - another one of us can chime in if there’s more push back and Michael K needs backup
  • Cheryl - would like to get feedback from NCAR chemistry group (ACOM); pinging Matt Dawson
• Second rules update; update write_standard_name_table.py to allow for subsections (#87)
  • People to take a look
• Two identical quantities from different schemes/processes (issue #79)
  • Dom added suggestion from Cory
  • Jesse ok with whole atmosphere verbiage
  • Dom to ping UFS’s gravity wave drag guy
  • Dustin - weird to distinguish when they’re both operating on the same vertical grid
  • Settled on cumulative_change_of_x_wind_due_to_convective_whole_atmosphere_gravity_wave_drag

Discussion

• Prebuild doesn’t have variables defined by framework; have to track variables in host model that are purely output. Capgen can handle those, but…
  • Won’t work with multi-instance capgen (workaround is to define the variables on the host side)
  • Related issue: #561; added to “capgen unification” project
• Standard names repo name change (discussion/announcement #88)
  • Jesse suggests adding a deadline / when we will make the change
  • We want a “speak now or forever hold your peace” situation
  • Possible deadline of 1/23
  • Michael K to create issue (include instructions on how to update .gitmodules, etc)
  • CCPPStandardNames => ESMStandardNames
• Dom - would recommend putting standards into workflow documentation about when a PR is draft vs not - document
• Dom - agree on a time frame for PR review & responding to PR review requests
  • Michael K - thinks we previously decided 1 week for PR reviews
  • Jesse - maybe we have 1 week for high priority bugfixes and 2 weeks for other PRs (or something of that ilk); or maybe that’s just unofficial
• Timeline
  • UFS
    • Dustin working on contiguous memory in MPAS
    • Some schemes have different bounds (not just (:,:) for example)
      • Needs fix
    • Need to document changes & have time to implement changes in framework
    • Hoping to get close next month
    • Might go into GFS17
      • Acronym clarity: GFS is like a UFS configuration (global configuration of UFS)
  • NEPTUNE
    • End of september is the goal