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ESCOMP

38 indexed repositories · View on GitHub

CESM
The Community Earth System Model

Python · 493 stars
CTSM
Community Terrestrial Systems Model (includes the Community Land Model of CESM)

Fortran · 352 stars
CAM
Community Atmosphere Model

93 stars
mizuRoute
Reach-based river routing model

Fortran · 62 stars
CMEPS
NUOPC Community Mediator for Earth Prediction Systems

Fortran · 36 stars
CDEPS
Community Data Models for Earth Prediction Systems

Fortran · 32 stars
ESCOMP-Containers
Containerized versions of ESCOMP software (eg, CESM)

Fortran · 15 stars
SimpleLand
Simple Land Model for CESM --- *** IN DEVELOPMENT *** --- please contact for more info. See supplemental information of https://journals....

Fortran · 15 stars
MOSART
Model for Scale Adaptive River Transport, Mosart, part of the Community Earth System Model

Fortran · 13 stars
CISM
Community Ice Sheet Model

Fortran · 13 stars
PUMAS
Parameterization for Unified Microphysics Across Scales

Fortran · 12 stars
atmospheric_physics
CCPP-enabled Atmospheric Physics

Fortran · 12 stars
ESMStandardNames
Repository for community-accepted Earth System Modeling Standard Names and search tools

Python · 9 stars
CAM-SIMA
Community Atmosphere Model - System for Integrated Modeling of the Atmosphere

9 stars
POP2-CESM
Parallel Ocean Program (POP2) in CESM

Fortran · 8 stars
CARMA
Stand-alone tests for the CARMA aerosol model

Jupyter Notebook · 8 stars
MOM_interface
CESM interface to MOM Ocean Model

Jupyter Notebook · 6 stars
CISM-wrapper
Community Ice Sheet Model wrapper for CESM

Fortran · 4 stars
UFSCOMP
Unified Forecast System Community Portal

Python · 3 stars
CARMA_base
CARMA base source code

Fortran · 3 stars
18 more repositories live on View on GitHub

Beginner friendly Everything

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Issues somebody may already be working on are listed last. List everything by date

Update cime to cime6.6.2 or later: aborted CAM-only runs can report RUN PASS
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ESCOMP/CAM-SIMA#575 · 1 comment · Opened Oct 24, 2026

Maintainers usually reply within 1 day
Test suite does not compare any h.bgc streams
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ESCOMP/MOM_interface#357 · Opened Oct 24, 2026
Test suite does not compare fully global output
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ESCOMP/MOM_interface#356 · Opened Oct 24, 2026
Reduce wallclock time and/or PE count of some tests
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Difficulty 4/5 3-5 days Newbie friendliness 45/100

ESCOMP/CTSM#4282 · Opened Oct 23, 2026

Maintainers usually reply within 1 day
This is a reminder to port WACCM / WACCM-X SE dycore namelist defaults once those configurations are supported in SIMA
Open
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enhancement

Difficulty 4/5 3-5 days Newbie friendliness 43/100

ESCOMP/CAM-SIMA#573 · Opened Oct 23, 2026

Maintainers usually reply within 1 day
Clean up hist_file_t object
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enhancement

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

ESCOMP/CAM-SIMA#569 · Opened Oct 22, 2026

Maintainers usually reply within 1 day
Install and test meorg_client to upload and analyze PLUMBER2 and Urban-PLUMBER simulations
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diagnostic enhancement next

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

ESCOMP/CTSM#4271 · Opened Oct 22, 2026

Maintainers usually reply within 1 day
Need to more uniformly apply `safe_endrun` and cam_pio_utils
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code clean-up enhancement misc wishlist

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

ESCOMP/CAM-SIMA#566 · Opened Oct 20, 2026

Maintainers usually reply within 1 day
Replace remaining POP grids with MOM grids
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after CESM3_0 enhancement

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

ESCOMP/CAM#1735 · Opened Oct 20, 2026

Maintainers usually reply within 4 days
Three bugs in micro_pumas_v1.F90 / micro_pumas_utils.F90 (accre_sees_auto droplet number, vtrmi_factor, ice lambda lower bound)
Open
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Difficulty 4/5 3-5 days Newbie friendliness 48/100

ESCOMP/PUMAS#81 · 1 comment · Opened Oct 19, 2026
ocph/bcph fields in coupler and history output are unlabeled
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enhancement question

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

ESCOMP/CMEPS#715 · Opened Oct 18, 2026
FAIL SMS_D_Ld3_PS.f09_t233.I1850Clm60BgcNoAnthroRtm.derecho_intel.clm-decStart1851_noinitial--clm-matrixcnOn
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bug closed: wontfix priority: low

Difficulty 4/5 3-5 days Newbie friendliness 18/100

ESCOMP/CTSM#4263 · 1 comment · Opened Oct 16, 2026

Maintainers usually reply within 1 day
CCPPize pp_waccm_ma_mam5
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Difficulty 5/5 Over a week Newbie friendliness 12/100

ESCOMP/atmospheric_physics#462 · Opened Oct 14, 2026

Maintainers usually reply within 3 days
CCPPize mo_aurora.F90
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Difficulty 4/5 3-5 days Newbie friendliness 32/100

ESCOMP/atmospheric_physics#461 · Opened Oct 14, 2026

Maintainers usually reply within 3 days
CCPPize WACCM's version of radheat
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Difficulty 4/5 3-5 days Newbie friendliness 22/100

ESCOMP/atmospheric_physics#460 · Opened Oct 14, 2026

Maintainers usually reply within 3 days
CCPPize iondrag
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Difficulty 4/5 3-5 days Newbie friendliness 35/100

ESCOMP/atmospheric_physics#459 · Opened Oct 14, 2026

Maintainers usually reply within 3 days
CCPPize qbo_relax
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Difficulty 4/5 3-5 days Newbie friendliness 20/100

ESCOMP/atmospheric_physics#458 · Opened Oct 14, 2026

Maintainers usually reply within 3 days
CCPPize charge_balance
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Difficulty 4/5 3-5 days Newbie friendliness 35/100

ESCOMP/atmospheric_physics#457 · Opened Oct 14, 2026

Maintainers usually reply within 3 days
Reassess AGENTS.md file
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Difficulty 3/5 1-2 days Newbie friendliness 20/100

ESCOMP/atmospheric_physics#456 · 1 comment · Opened Oct 14, 2026

Maintainers usually reply within 3 days
CCPPize WACCM physics & chemistry
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Difficulty 5/5 Over a week Newbie friendliness 8/100

ESCOMP/atmospheric_physics#455 · Opened Oct 14, 2026

Maintainers usually reply within 3 days
Adopt more easily viewed documentation format(s)
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Difficulty 5/5 Over a week Newbie friendliness 30/100

ESCOMP/ESMStandardNames#163 · 1 comment · Opened Oct 12, 2026
Update MODEL_DOI_URL for cesm to a CESM3 page
Open
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CESM only enhancement

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

ESCOMP/CMEPS#712 · 1 comment · Opened Oct 11, 2026
Add version/DOI to output history files
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enhancement

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

ESCOMP/CMEPS#711 · Opened Oct 11, 2026
CPLHIST files assign standard_name to variables, but it isn't a CF-Convention standard name -- should it do that?
Open
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enhancement question

Difficulty 2/5 1-3 hours Newbie friendliness 40/100

ESCOMP/CMEPS#710 · Opened Oct 11, 2026
Latitude and Longitude on CPLHIST files have time dimension and shouldn't
Open
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enhancement

Difficulty 3/5 Half a day Newbie friendliness 50/100

ESCOMP/CMEPS#709 · Opened Oct 11, 2026
Small bug
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Difficulty 2/5 1-3 hours Newbie friendliness 72/100

ESCOMP/PUMAS#79 · Opened Oct 2, 2026
Can we create a rudimentary mediator log file when running without a mediator?
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Difficulty 5/5 Over a week Newbie friendliness 35/100

ESCOMP/CMEPS#708 · Opened Oct 1, 2026
CESM should compute and pass 10-m winds from CAM to WW3 rather than passing lowest-level winds as if they're 10-m winds
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Difficulty 4/5 3-5 days Newbie friendliness 48/100

ESCOMP/CMEPS#707 · Opened Oct 1, 2026
Update SE dycore to cam6_4_200 version ...
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enhancement

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

ESCOMP/CAM-SIMA#561 · 1 comment · Opened Oct 1, 2026

Maintainers usually reply within 1 day
F2000_C7 regression test fails: radiative flux to coupler must be > 0
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bug

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

ESCOMP/CAM-SIMA#559 · Opened Oct 1, 2026

Maintainers usually reply within 1 day
Consolidate use of the roots solver which is duplicated in clubb_mf and uwshcu.F90
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Difficulty 3/5 1-2 days Newbie friendliness 58/100

ESCOMP/CAM#1696 · Opened Sep 30, 2026

Maintainers usually reply within 4 days
Unify input file variable names for LBC input files
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Difficulty 4/5 3-5 days Newbie friendliness 48/100

ESCOMP/CAM-SIMA#556 · Opened Sep 30, 2026

Maintainers usually reply within 1 day
VR grids sometimes give different answers
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- Is something wrong?
blocked: dependency bug science

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

ESCOMP/CTSM#4237 · 1 comment · Opened Sep 30, 2026

Maintainers usually reply within 1 day
Need to create Nvidia snapshot test for PUMAS and add it to the CIRRUS CI.
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enhancement

Difficulty 4/5 3-5 days Newbie friendliness 55/100

ESCOMP/CAM-SIMA#555 · Opened Sep 29, 2026

Maintainers usually reply within 1 day
Missing settings for CESM3 release
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- Is something wrong?
Difficulty 3/5 1-2 days Newbie friendliness 42/100

ESCOMP/MOM_interface#352 · 1 comment · Opened Sep 28, 2026
Need clarification on when and how a medium should be specified
Open
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Difficulty 3/5 1-2 days Newbie friendliness 56/100

ESCOMP/ESMStandardNames#161 · Opened Sep 27, 2026
CAM not getting the correct use case with a long name comspet
Open
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Difficulty 3/5 1-2 days Newbie friendliness 55/100

ESCOMP/CAM#1685 · 5 comments · Opened Sep 25, 2026

Maintainers usually reply within 4 days
Default value for ATM_ALT_CO2_OPT should be const
May be free again @mnlevy1981 claimed this 29 days ago, and no pull request is open. Open
- Is something wrong?
ESCOMP/MOM_interface#351 · 1 comment · 1 assignee · Opened Sep 25, 2026
ERI_Ly10.f10_f10_mg37.I1850Clm50SpG.derecho_intel.cism-isostasy_period4 Fail in cism_wrap_3.0.0
May be free again @Katetc claimed this 29 days ago, and no pull request is open. Open
- Is something wrong?
ESCOMP/CISM-wrapper#148 · 1 assignee · Opened Sep 25, 2026
Define un-defined abbreviations, and adopt consistent use of currently used and currently defined abbreviations
Open
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Difficulty 2/5 1-3 hours Newbie friendliness 68/100

ESCOMP/ESMStandardNames#160 · Opened Sep 24, 2026
Move the CPLHIST tests to aux_cmeps and inside of CMEPS
Open
- Is something wrong?
CESM Only enhancement question

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

ESCOMP/CDEPS#446 · 2 comments · Opened Sep 23, 2026
If statements in DATM buildnml wrongly assume False if the value is 0.0
May be free again @ekluzek claimed this 32 days ago, and no pull request is open. Open
- Is something wrong?
bug Responsibility: CTSM

ESCOMP/CDEPS#445 · 1 comment · 1 assignee · Opened Sep 23, 2026
Fix coupling of irrigation with DLND
Open
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Difficulty 4/5 3-5 days Newbie friendliness 35/100

ESCOMP/CMEPS#705 · Opened Sep 22, 2026
history_option in user_nl_ww3 is silently overwritten by HIST_OPTION and has no effect
Open
- Is something wrong?
Difficulty 3/5 1-2 days Newbie friendliness 40/100

ESCOMP/WW3_interface#21 · Opened Sep 22, 2026
Change DGLC tests in aux_cdeps to have land forcing
Open
- Is something wrong?
Difficulty 4/5 3-5 days Newbie friendliness 38/100

ESCOMP/CDEPS#444 · 1 comment · Opened Sep 17, 2026
Remove command line options for ones that are already in XML: use_case, lnd_tuning_mode, glc_nec, co2_type, co2_ppmv, clm_usr_name, clm_accelerated_spinup, structure, res, configuration, csmdata
Open
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b4b code health enhancement size: small usability

Difficulty 3/5 1-2 days Newbie friendliness 68/100

ESCOMP/CTSM#4211 · Opened Sep 16, 2026

Maintainers usually reply within 1 day
User-configurable datamode for UFS
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Difficulty 5/5 Over a week Newbie friendliness 35/100

ESCOMP/CDEPS#442 · 12 comments · Opened Sep 16, 2026
Update technote with new wetlands algorithms
May be free again @swensosc claimed this 45 days ago, and no pull request is open. Open
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b4b docs-loc:tech-note docs:update documentation priority: high

ESCOMP/CTSM#4205 · 1 assignee · Opened Sep 9, 2026

Maintainers usually reply within 1 day
test_registry.py: repeated numbers
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code clean-up

Difficulty 2/5 1-3 hours Newbie friendliness 88/100

ESCOMP/CAM-SIMA#552 · Opened Sep 9, 2026

Maintainers usually reply within 1 day
There are no default PE layouts using the tx2_3v3 grid
May be free again @mnlevy1981 claimed this 46 days ago, and no pull request is open. Open
- Is something wrong?
ESCOMP/CESM#423 · 1 assignee · Opened Sep 8, 2026

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