ESCOMP/CTSM

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Community Terrestrial Systems Model (includes the Community Land Model of CESM)

Stars: 352
Forks: 361
Open beginner issues: 0
Indexed issues: 953
Avg merge: 2d 21h
Merged PRs (30d): 7

Dominant language: Fortran
License: No license data
Last GitHub push: Sep 10, 2026
Latest indexed: Sep 15, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: good first issue

Open All

953 open issues indexed

c2l_scale_type not specified for many history fields Open

bug priority: low science

ESCOMP/CTSM#1 · 3 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
add meta-types for landunit types Open

code health

ESCOMP/CTSM#5 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
remove duplicate call to SoilBiogeochemVerticalProfile Open

bug priority: low

ESCOMP/CTSM#11 · 7 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
problems with new CNFireMod Open

code health

ESCOMP/CTSM#12 · 12 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
duplicate definitions of a few functions in CanopyFluxesMod.F90 Open

code health

ESCOMP/CTSM#15 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
problem with the bounds of some history fields Open

code health priority: low

ESCOMP/CTSM#16 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
change restart file format to decrease file size and prevent the need for some interpinic's Open

enhancement priority: low

ESCOMP/CTSM#18 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
min & max don't work correctly for some history fields Open

bug priority: low

ESCOMP/CTSM#20 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
refactor code that assumes a particular ordering of PFT type constants Open

code health good first issue

ESCOMP/CTSM#21 · 10 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
add ability to specify namelist requirements via xml Open

enhancement priority: low

ESCOMP/CTSM#26 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Clean up use and implementation of accumulMod Open

code health

ESCOMP/CTSM#30 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
move calls to alt_calc and SoilBiogeochemVerticalProfile to later in the driver sequence Open

code health

ESCOMP/CTSM#32 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
each patch / column / landunit type index should have unique meaning Open

enhancement

ESCOMP/CTSM#35 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
rework or remove max_patch_per_col Open

code health performance

ESCOMP/CTSM#37 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
dynamic landunits: handle methane with changing lake area Open

bug science

ESCOMP/CTSM#43 · 7 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
remove duplication in setting of history fields for carbon isotopes (c13 and c14) Open

code health

ESCOMP/CTSM#44 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
ch4 placement in driver will cause problems if BeTR is used for nitrogen Open

enhancement

ESCOMP/CTSM#45 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Add a test that ensures that setting all_active = .true. doesn't change answers for gridcell averages Open

testing

ESCOMP/CTSM#47 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Change urban code to use downscaled atmospheric forcings Open

enhancement priority: low

ESCOMP/CTSM#49 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Build-namelist calculation of CLM dtime assumes NCPL_BASE_PERIOD=ndays Open

enhancement

ESCOMP/CTSM#53 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
In init_interp: If a given type cannot be found: Consider using something other than bare ground Open

enhancement priority: low

ESCOMP/CTSM#54 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
TruncateCandNStates should abort if just one of C or N is near-zero Open

enhancement

ESCOMP/CTSM#56 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
ncd_io should abort if variable not read, unless caller requests otherwise Open

enhancement

ESCOMP/CTSM#57 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Introduce xml variable controlling reseeding and snow resetting Open

enhancement

ESCOMP/CTSM#59 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Improve procedure for creating new initial conditions files for LII tests Open

testing

ESCOMP/CTSM#62 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Logic for initializing C isotopes and maybe other variables incorrect when using init_interp Open

bug science

ESCOMP/CTSM#67 · 10 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Try to rework atm2lndType initialization to follow the typical pattern Open

code health

ESCOMP/CTSM#70 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
runaccum accumulation fields shouldn't assume a certain min and max Open

code health

ESCOMP/CTSM#73 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Consider handling accumulator fields more robustly with dynamic landunits Open

enhancement

ESCOMP/CTSM#74 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
init_interp does not work for FATES or any model-generated land-cover dynamics Open

enhancement

ESCOMP/CTSM#76 · 9 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
[CLM-only] Restart files do NOT have _FillValue/missing_value attributes on fields Open

enhancement priority: low

ESCOMP/CTSM#88 · 18 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Handling of deg/rad and -180-180 vs. 0-360 in CLM input files.. Open

bug priority: low

ESCOMP/CTSM#89 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Re-implement build-namelist unit tester for CLM Open

enhancement priority: low

ESCOMP/CTSM#92 · 0 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
Create humanIndexMod method to encapsulate humanindex calculations Open

code health priority: low

ESCOMP/CTSM#106 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Move urban building constants to UrbBuildTempOleson2015Mod Open

code health priority: low

ESCOMP/CTSM#107 · 2 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
Create UrbBuildTempOleson2013Mod.F90 module for older CLM4.5 building temperature Open

code health

ESCOMP/CTSM#108 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Use string to describe namelist option for building_temp_method to make user-interface more clear Open

enhancement priority: low

ESCOMP/CTSM#109 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Changes to remove switchdim in ncdio_pio Open

b4b code health good first issue

ESCOMP/CTSM#126 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
NPP_BURNEDOFF doesn't seem to be restarting correctly Open

bug priority: low science

ESCOMP/CTSM#133 · 4 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
H2OSOI goes beyond WATSAT Open

investigation

ESCOMP/CTSM#136 · 8 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Remove or reduce duplication in Photosynthesis code for Plant Hydraulic Stress Open

code health

ESCOMP/CTSM#139 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Not all hard-coded constants in the CLM model are double precision... Open

code health priority: low

ESCOMP/CTSM#142 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
CLM doesn't check that dimensionality is correct for anything it reads in via ncdio_pio Open

enhancement

ESCOMP/CTSM#144 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Lack of maintenance respiration from snow covered vegetation Open

enhancement priority: low

ESCOMP/CTSM#145 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
time_bounds for start is a negative number Open

enhancement priority: low

ESCOMP/CTSM#146 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Add single point tower data for smallvilleIA Open

enhancement priority: low

ESCOMP/CTSM#156 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Have CLM listen to the driver for number of threads rather than OMP_NUM_THREADS Open

enhancement

ESCOMP/CTSM#163 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Cleanup restartvar_{DIMS}d_{TYPE} to ONLY be valid for a 1d interface as we already have a restart_2d_{TYPE}_bounds interface for 2D Open

code health priority: low

ESCOMP/CTSM#170 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
ne30 case fails on hobart_nag due to floating overflow Open

bug priority: low

ESCOMP/CTSM#174 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
add numg, numl, numc and nump to bounds derived type Open

enhancement priority: low

ESCOMP/CTSM#183 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026

ESCOMP/CTSM

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