CCPP Framework Meeting Minutes 2020 10 20

Agenda

first bunch of changes merged into master (cleanup/consistency of metadata entries, units, removal of GFS DDTs from radiation)
report on consolidation of standard names:
- proposed rules to compose standard names (extending CF conventions)
- about 3/4 of existing standard names checked
- soon-to-be-shared google doc with proposed rules and suggested names for existing variables for discussion; who should be there?
we are about one month behind schedule, hopefully still on target to transition before the end of the year
current clean up work in the UFS (removal of gnumake build, removal of IPD) will make the transition to cap_gen.py easier

MPAS close to running CCPP physics (hardcoded in driver, a bit like the hybrid CCPP in the UFS in the past) in the 2nd week of November
Q1/2021: milestone for running one physics suite in MPAS
Q3/2021: milestone for running one physics suite in MPAS in the "proper" CCPP way
standard names:
- MMM (Dave) has his own list standard names
- work with Grant and Ligia to converge to one set of rules and list of standard names
- when CCPP physics governance is established, hand off the unified standard names dictionary/rules to them

discussion with EPA on using CCPP for chemistry and physics (Georg and Dom)
- EPA will also want to run additional physics in MPAS and is willing to port them (starting with ACM2)
Judith Berner is interested in running MPAS physics in SCM; Dave and Grant will work on this
MMM wants to run MPAS chemistry through CCPP; Dave to chat with Georg (Grell) about using the GSL CCPP chemistry routines
Optional arguments in CCPP:
- https://github.com/NCAR/ccpp-framework/issues/305
- probably ok (Dave to check) to not use optional arguments at all in CCPP and rely on "active attribute"
Issue with latest (?) version of Intel compiler when passing an allocatable array as intent(in) to a subroutine: crashing when not allocated, even though array declared as assumed-size array
- Steve to share a small reproducer code with Dom
- Dom to discuss with Intel developers on Friday

CCPP Framework wiki