Quad Utilities Enhanced Stability & ROMS Memory Improvements

• Improved numerical robustness of quadrilateral interpolation in quad_utils_mod
• User documentation for quad_utilities_mod
• ROMS_rutgers memory reduction for regular grids added as a quickbuild.sh argument
  Usage for ROMS_rutgers:
  quickbuild.sh reg_grid|irreg_grid [mpi/nompi/mpif08] [program]

WRF nested tutorial

New features:

• New WRF Tutorial with severe storm nested domain example
• Automatic downscaling for WRF nested domains
• Perturbation step (WRFDA CV3) within tutorial
• Assimilation and forecast modes in tutorial
• WRF shell scripting converted to function-based bash scripts

Bug-fix:

• Imposes mandatory terrain-following coordinates to
  eliminate boundary condition bug during WRF perturbation step.

Documentation updates:

• WRF tutorial rewritten for nested Kansas 2024 severe storm example

CCE compiler flags

• Updated mkmf.template for CCE compiler #1059
• Default qtys updated with land qtys

Documentation updates:

• Removed duplicate list of observation converters #998
• Anchors for observation converter docs

Bug-fix:

• Removed _r8 from .nml files #1055

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