NCAR/ccpp-physics

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Collection of physics parameterizations compliant with the Common Community Physics Package (CCPP) framework

Stars: 78
Forks: 170
Open beginner issues: 0
Indexed issues: 43

Dominant language: Fortran
License: No license data
Last GitHub push: Sep 9, 2026
Latest indexed: Sep 19, 2026
Contributing guide: No contributing guide
Code of conduct: No code of conduct
Beginner labels: No beginner labels indexed
PR merge metrics: No merged PRs in 30d

Beginner friendly Everything

Open All

43 open issues indexed

Add CI tests for individual schemes Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 45/100

NCAR/ccpp-physics#1238 · Opened Aug 28, 2026
CI test "CCPP prebuild FV3" fails after capgen transition Open

bug

NCAR/ccpp-physics#1234 · 1 assignee · Opened Aug 13, 2026
Clean up code based around convectively transported ice being hardcoded to -999.9. Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

NCAR/ccpp-physics#1216 · Opened May 5, 2026
Complete reading and broadcasting of domain-sized arrays Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 48/100

NCAR/ccpp-physics#1210 · Opened Apr 10, 2026
GPU batched tridi1 PBL solver — 7.5-11.6x speedup at 500K columns Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

NCAR/ccpp-physics#1206 · 1 comment · Opened Mar 27, 2026
Check schemes for unused variables and variables that can be conditionally allocated depending on a flag Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

NCAR/ccpp-physics#1150 · Opened Jul 15, 2025
Unify NOAA & NCAR versions & CCPP-compliant interfaces of RRTMGP Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 20/100

NCAR/ccpp-physics#1132 · 5 comments · Opened Apr 15, 2025
Non-trivial compiler warnings flagged in UFS debug mode Open

bug

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

NCAR/ccpp-physics#1131 · 2 comments · Opened Apr 14, 2025
Running GFDL microphysics with hydrostatic option Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

NCAR/ccpp-physics#1122 · 7 comments · Opened Apr 7, 2025
Update CCPP Prebuild CI test Open

enhancement

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

NCAR/ccpp-physics#1113 · Opened Feb 14, 2025
PUMAS Microphysics Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

NCAR/ccpp-physics#1099 · 1 comment · Opened Nov 4, 2024
CODEOWNERS contains errors Open

bug

Difficulty 2/5 1-3 hours Newbie friendliness 20/100

NCAR/ccpp-physics#1078 · 2 comments · Opened Jul 11, 2024
Compilation error in Ferrier-Aligo microphysics Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

NCAR/ccpp-physics#1074 · 2 comments · Opened May 30, 2024
GFS_phys_time_vary_init does not report errmsg/errflg correctly due to thread race condition Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

NCAR/ccpp-physics#1031 · Opened Sep 21, 2023
lprnt won't stay .true. Open

bug CCPP v7

Difficulty 2/5 1-3 hours Newbie friendliness 52/100

NCAR/ccpp-physics#1027 · Opened Aug 8, 2023
Type mismatch when compile Open

bug CCPP v7

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

NCAR/ccpp-physics#1011 · Opened Apr 21, 2023
Snow depth variable descriptors are incorrect in GFS_surface_composites*meta Open

bug CCPP v7

Difficulty 1/5 Under an hour Newbie friendliness 72/100

NCAR/ccpp-physics#969 · Opened Sep 21, 2022
Question about converting between dry and moist mixing ratios Open

bug CCPP v7

NCAR/ccpp-physics#961 · 1 assignee · Opened Sep 6, 2022
Out of memory when using the new ice climatology data on Cheyenne Open

bug low priority

Difficulty 4/5 3-5 days Newbie friendliness 25/100

NCAR/ccpp-physics#947 · 1 comment · Opened Jul 12, 2022
Address remaining issues in RRFS smoke code Open

bug CCPP v7

Difficulty 4/5 3-5 days Newbie friendliness 25/100

NCAR/ccpp-physics#922 · Opened May 11, 2022
Cleanup of RRTMGP Interstitials Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 35/100

NCAR/ccpp-physics#893 · 1 comment · Opened Apr 5, 2022
Ferrier-Aligo microphysics implementation needs to be revisited Open

low priority

Difficulty 5/5 Over a week Newbie friendliness 25/100

NCAR/ccpp-physics#762 · 4 comments · Opened Oct 22, 2021
Logic error in "dtend" diagnostic outputs for "generic_tendency" schemes Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 42/100

NCAR/ccpp-physics#741 · 9 comments · Opened Sep 23, 2021
Coding bug in tendency diagnostics in ugwpv1_gsldrag.F90 Open

bug

Difficulty 1/5 Under an hour Newbie friendliness 45/100

NCAR/ccpp-physics#740 · Opened Sep 23, 2021
Fix argument mismatches so that GNU 10 does not throw errors/warnings Open

bug

NCAR/ccpp-physics#703 · 3 comments · 2 assignees · Opened Jul 22, 2021
Collect and reduce dependencies of ccpp-physics on thirdparty libraries Open

enhancement

NCAR/ccpp-physics#690 · 2 assignees · Opened Jul 2, 2021
Assign integers to PBL schemes and surface layer schemes Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

NCAR/ccpp-physics#654 · Opened May 10, 2021
Standard names need to be streamlined and documented Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

NCAR/ccpp-physics#638 · 1 comment · Opened Apr 21, 2021
Check for and remove redundant variables for surface composite physics Open

NCAR/ccpp-physics#636 · 2 assignees · Opened Apr 20, 2021
Some schemes are ignoring return values from netCDF calls, have too long lines and other formatting problems Open

NCAR/ccpp-physics#621 · 1 assignee · Opened Apr 12, 2021
Merge cnvc90 into existing interstitial scheme Open

NCAR/ccpp-physics#610 · 13 comments · 3 assignees · Opened Apr 5, 2021
What is "AVOST IN VILKA"? Provide more helpful error messages in RUC LSM Open

NCAR/ccpp-physics#599 · 4 comments · 1 assignee · Opened Mar 24, 2021
Change suffix of .f free-form source files to .F90/.f90 Open

transition to capgen

NCAR/ccpp-physics#595 · 2 comments · 1 assignee · Opened Mar 16, 2021
RRTMGP needs to accept and use physical constants from host model Open

NCAR/ccpp-physics#583 · 1 assignee · Opened Mar 1, 2021
Noah MP must use host model constants instead of its own ones Open

NCAR/ccpp-physics#582 · 11 comments · 2 assignees · Opened Mar 1, 2021
SGSCloud_Rad* routines not compatible with fewer radiation levels than (standard) model levels Open

NCAR/ccpp-physics#554 · 3 comments · 1 assignee · Opened Jan 16, 2021
Move NoahMP to its own submodule Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

NCAR/ccpp-physics#551 · 12 comments · Opened Jan 11, 2021
Reorganization of "time_vary" interstitials Open

enhancement low priority

NCAR/ccpp-physics#549 · 1 assignee · Opened Jan 8, 2021
Multiple mersenne twisters in UFS applications Open

low priority

NCAR/ccpp-physics#529 · 1 assignee · Opened Dec 9, 2020
Cleanup code: remove unused variables Open

NCAR/ccpp-physics#495 · 3 comments · 1 assignee · Opened Sep 2, 2020
Morrison-Gettelman Reflectivity Calculation Open

enhancement low priority

Difficulty 4/5 3-5 days Newbie friendliness 32/100

NCAR/ccpp-physics#473 · 11 comments · Opened Jul 10, 2020
move von Karman to physcons and pass in to schemes that use it Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 38/100

NCAR/ccpp-physics#245 · Opened May 8, 2019
machine.F uses unsupported kind values and should be renamed to ccpp_kinds Open

NCAR/ccpp-physics#194 · 6 comments · 1 assignee · Opened Dec 29, 2018

NCAR/ccpp-physics

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