NCAR/DART

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Data Assimilation Research Testbed

Stars: 263
Forks: 182
Open beginner issues: 0
Indexed issues: 164
Avg merge: 11d 12h
Merged PRs (30d): 7

Dominant language: Fortran
License: Apache-2.0
Last GitHub push: Sep 10, 2026
Latest indexed: Sep 19, 2026
Contributing guide: No contributing guide
Code of conduct: No code of conduct
Beginner labels: good first issue help wanted

Beginner friendly Everything

Open All

164 open issues indexed

MPI Updates Open

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

NCAR/DART#1189 · 9 comments · Opened Sep 9, 2026
sfc_elev_max_diff rejection is dependent on debugging on and on do_ouput (only task 0 typically) Open

mpas

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

NCAR/DART#1172 · Opened Aug 20, 2026
Notes for regional CICE Open

cice

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

NCAR/DART#1167 · 1 comment · Opened Aug 14, 2026
ensemble manager: layout, layout_type, distribution_type Open

ensemble_manager

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

NCAR/DART#1166 · 4 comments · Opened Aug 13, 2026
bug: Build failure with mpiifort: DART_VERSION macro loses quotes in version_mod.F90 Open

build-system

NCAR/DART#1164 · 7 comments · 1 assignee · Opened Aug 12, 2026
Outdated comments in quad_utils Open

quad_utils

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

NCAR/DART#1161 · 1 comment · Opened Aug 6, 2026
quad_utils cycle vs error Open

quad_utils

Difficulty 4/5 3-5 days Newbie friendliness 30/100

NCAR/DART#1160 · 1 comment · Opened Aug 5, 2026
vortex code wrf_chem Open

wrf-chem

NCAR/DART#1155 · 5 comments · 1 assignee · Opened Jul 17, 2026
hybrid coordinate wrf Open

wrf wrf-chem

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

NCAR/DART#1148 · 5 comments · Opened Jul 13, 2026
mpi_utilities_nml in a bunch of input.nmls Open

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

NCAR/DART#1143 · 1 comment · Opened Jul 8, 2026
exit_all not in a module Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

NCAR/DART#1142 · Opened Jul 8, 2026
non-standard fortran in utilities_mod.f90 stops you using -std=f2008 out-of-the box Open

fortran standards

Difficulty 3/5 1-2 days Newbie friendliness 62/100

NCAR/DART#1141 · 1 comment · Opened Jul 8, 2026
Documentation: references to ``work/workshop_setup.csh`` Open

Documentation

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

NCAR/DART#1140 · 1 comment · Opened Jul 8, 2026
radar obs_coverter has a assim_tools_nml in input.nml Open

obs_converters

Difficulty 2/5 1-3 hours Newbie friendliness 48/100

NCAR/DART#1126 · Opened Jun 11, 2026
quad_utils_mod regional grids that cross 0 longitude. Open

Bug interpolation quad_utils

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

NCAR/DART#1124 · 2 comments · Opened Jun 4, 2026
mpi developer tests Open

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

NCAR/DART#1123 · 2 comments · Opened Jun 2, 2026
bug: DART fails to compile with the mpif08 module with NAG on Izumi Open

Difficulty 3/5 1-2 days Newbie friendliness 50/100

NCAR/DART#1122 · 2 comments · Opened Jun 2, 2026
integrate_model docs "no namelist" not quite true Open

psi

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

NCAR/DART#1119 · Opened May 27, 2026
missing_r8 distances are always close because they are negative Open

Bug missing_state

Difficulty 2/5 1-3 hours Newbie friendliness 55/100

NCAR/DART#1111 · 2 comments · Opened May 18, 2026
cice model_mod nml does 'update_dry_cell_walls' does nothing Open

cice

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

NCAR/DART#1107 · Opened May 6, 2026
cice_to_dart subroutine verify_parameters does not set intent(out) :: table(:,:) Open

cice

NCAR/DART#1105 · 1 assignee · Opened May 1, 2026
Feature request: NEMO model_mod interface for DART Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

NCAR/DART#1101 · Opened Apr 24, 2026
quad_interpolate developer tests large interp residual Open

QCEFF quad_utils

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

NCAR/DART#1097 · 3 comments · Opened Apr 15, 2026
ifx with debugging flags giving floating point invalid operation in get_close_init Open

ieee intel

NCAR/DART#1096 · 6 comments · 1 assignee · Opened Apr 14, 2026
quad_utils `quad_lon_lat_evaluate_ir_array` vs `quad_lon_lat_evaluate_ii_array` missing_r8 Open

missing_state quad_utils

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

NCAR/DART#1095 · 1 comment · Opened Apr 13, 2026
New quantity(s) for averaged observations Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

NCAR/DART#1093 · 2 comments · Opened Apr 6, 2026
Documentation: Duplicate (almost) documentation on observations Open

Difficulty 3/5 1-2 days Newbie friendliness 48/100

NCAR/DART#1087 · Opened Mar 25, 2026
Feature request: compiling multiple model_mods into dart Open

Difficulty 5/5 Over a week Newbie friendliness 45/100

NCAR/DART#1085 · 2 comments · Opened Mar 24, 2026
In `create_and_open_state_output`, only 'time' (lower case) can be the unlimited dimension. Open

IO

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

NCAR/DART#1080 · Opened Mar 16, 2026
IO diagnostic structure in the code but not ~~used at all~~ half used Open

IO

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

NCAR/DART#1079 · Opened Mar 16, 2026
`assert_restart_names_initialized` is printing the error message from `assert_file_info_initialized` Open

IO psi

Difficulty 2/5 1-3 hours Newbie friendliness 50/100

NCAR/DART#1078 · Opened Mar 16, 2026
direct_netcdf_mod.f90 SINGLE_IO_TASK_ID and hardcoded 0 Open

IO

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

NCAR/DART#1077 · Opened Mar 16, 2026
dart_time_io_mod.f90 uses its own local has_unlimited Open

IO

Difficulty 2/5 1-3 hours Newbie friendliness 62/100

NCAR/DART#1076 · 1 comment · Opened Mar 16, 2026
add_domain_blank mixes the IO and state dimensions Open

IO

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

NCAR/DART#1075 · Opened Mar 16, 2026
note on bufr units Open

Documentation

Difficulty 1/5 1-3 hours Newbie friendliness 62/100

NCAR/DART#1074 · Opened Mar 12, 2026
documentation for filter_nml Open

Documentation

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

NCAR/DART#1065 · Opened Mar 6, 2026
note on Fortran standard warning dart_to_clm.f90 Open

CLM fortran standards

Difficulty 1/5 Under an hour Newbie friendliness 55/100

NCAR/DART#1062 · 1 comment · Opened Mar 2, 2026
identity obs limited to i4 state Open

i4_vs_i8

Difficulty 4/5 3-5 days Newbie friendliness 30/100

NCAR/DART#1061 · Opened Mar 2, 2026
bug: ensemble_manager_mod:: set_up_ens_distribution using loop variable for pes_num_vars Open

back burner ensemble_manager pmp Refactor

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

NCAR/DART#1060 · 1 comment · Opened Mar 2, 2026
bug: MPI_Win_create error for state window when using large state with few tasks Open

Bug ensemble_manager i4_vs_i8

NCAR/DART#1051 · 2 comments · 1 assignee · Opened Feb 23, 2026
filter_mod default for init_time Open

Documentation

Difficulty 3/5 1-2 days Newbie friendliness 48/100

NCAR/DART#1041 · Opened Jan 30, 2026
wrf get_close_state gives out of bounds i.e. "not in domain" values for some state elements when localizing in height/pressure Open

Bug wrf

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

NCAR/DART#1040 · Opened Jan 14, 2026
doc for set_vertical_localization_coord Open

Bug Documentation

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

NCAR/DART#1039 · 2 comments · Opened Jan 9, 2026
bug: wrf convert_vertical_state does not use which_vert, Open

Bug wrf

Difficulty 2/5 1-3 hours Newbie friendliness 48/100

NCAR/DART#1038 · 1 comment · Opened Jan 9, 2026
observation converter build GitHub action pull requst Open

github_actions

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

NCAR/DART#1026 · Opened Dec 30, 2025
Adaptive_inflate_mod NaN issue? Open

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

NCAR/DART#1021 · 2 comments · Opened Dec 5, 2025
bug: wrf model_mod QTY_VAPOR_MIXING_RATIO with vertissurface always returns 0.0 with success if q2 is not in the state Open

Bug wrf

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

NCAR/DART#1019 · Opened Dec 3, 2025
bug: wrf model_interpolate .or. QTY_SURFACE_ELEVATION Open

Bug wrf

Difficulty 2/5 1-3 hours Newbie friendliness 50/100

NCAR/DART#1015 · Opened Dec 2, 2025
Oklahoma Mesonet MDF URL Changes Open

Documentation

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

NCAR/DART#1014 · 1 comment · Opened Dec 2, 2025
bug: wrf model_mod fails when interpolating 10m wind u|v with vertisheight Open

Bug wrf

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

NCAR/DART#1013 · 1 comment · Opened Dec 1, 2025

NCAR/DART

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