MOM6 clamping

MOM6:

• Add clamping options to model_nml for MOM6 #1028
  Note this requires a change to input.nml model_nml model_state_variables

• Sets vertical localization coordinate #1039

• Bug-fixes:

  • vertical interpolation for thickness was missing first layer thickness #1048
  • vertical interpolation lev_fract fixed for pseudo-depth #1047

Documentation:

• pytools documentation added for pyfortran and pyqceff #1045

pywatershed

New features:

• Interface to hydrologic model pywatershed.
  Example data available on DART Data Archive: https://data.dart.ucar.edu/pywatershed/
• GitHub actions for pytools #1042

Bug-fix:

• Removed check on initialized variables in mkmf.template.ifx due to ifx problems #1046

Documentation updates:

• NSF NCAR branding update #1000

IODA2obsq

New feature:

• Radiances added to pyjedi ioda2obsq tool for DART JEDI interoperability

  contributed by Stephen Herbener, as part of DART collaboration with JCSDA

Bug-fix:

• WRF model_mod bug-fix for 3D potential temperature interpolation #1011

ARVOR Float and SVP Drifters

New Features:

• ARVOR float observation converter
• SVP drifter observation converter
• csv read utilities

Bug-fix:

• Remove format read for clamping values in parse_variables_clamp,
  wrf, mpas, tiegcm that caused integers to be misread. #1022
  Thanks to Kate Boden, University of Colorado for reporting this

DART Data Archive

• WRF tutorial updated to get data from data.dart.ucar.edu #305
• Fix defaults for MOM6 assimilation period to 1 day #1032

Log DART version

New Features:

• Version of DART logged in program message #747
  contributed by Kamil Yousuf
• Tests for parse_args_mod #231
• Remove close_ind array initialization for 3d sphere and 3d
  cartesian location_mods to improve get_close performance. #910

Bug-fixes:

• model_mod_check model_size collected in test initialization #1016

BAMS 2025 article

Documentation updates:

• How to cite DART #997
• Bulletin of the American Meteorological Society 2025 article

Bug-fix:

• Assert sea surface height is present in the state for ROMS Rutgers
  model_interpolate #1001

HF Radar converter

New features:

• High Frequency (HF) Radar ocean observation converter.
• ROMS–Rutgers: Option to use Sea Surface Height from the template file,
  assuming the ensemble mean is provided in that file.

Bug-fix:

• Corrected consistency check across restarts when fill or missing attributes are NaN. #970 #323

Aether Cube Sphere

• Aether model of the thermosphere and ionosphere cube sphere interface added to DART. #665
• SLANT_GPS_VTEC QTY and obs_def.

DART tutorial

• DART tutorial updated to QCEFF v11 #725 #810
• DART tutorial now an extension of DART_LAB
• Lorenz_96/work directory contains input files needed for DART_LAB6:DART_tutorial
• PDF tutorial slides relocated to a separate repo: https://github.com/NCAR/dart-tutorial