CICE-Consortium
Published January 22, 2026 | Version 1.5.3
Software Open

CICE-Consortium/Icepack: Icepack 1.5.3

Authors/Creators

  • 1. Los Alamos National Laboratory
  • 2. Naval Research Laboratory Stennis Space Center
  • 3. National Center for Atmospheric Research
  • 4. Environment and Climate Change Canada
  • 5. National Oceanic and Atmospheric Administration
  • 6. Institute of Oceanology, Polish Academy of Sciences
  • 7. Danish Meteorological Institute
  • 8. Alfred-Wegener-Institut Helmholz-Zentrum fur Polar- und Meersforschung
  • 9. Australian Earth-System Simulator
  • 10. Geophysical Fluid Dynamics Laboratory
  • 11. National Aeronautics and Space Administration

Description

Icepack version 1.5.3 is being released with CICE6.6.3. This is a minor release update from the Icepack1.5.2 release from August, 2025. This release is being done primarily to update the CMIP output variables in CICE. But this release also improves residual ice handling and adds options for coupling with externally generated wave height. The ICEPACK interfaces have had some minor changes that may not be backward compatible.

Major Changes

  • #543 Update residual ice zapping, add namelist to control thresholds. THIS CHANGES ANSWERS

Bug fixes

  • #552 Enforce minimum snow grain radius THIS CHANGES ANSWERS for configurations using prognostic snow grain radius
  • #542 Update Tsnice computation, changes history output for f_sitempsnic.

Enhancements

  • #545 Add option for externally generated significant wave height. Some of the Icepack interfaces have been updated, this is not backwards compatible for calls to subroutine icepack_step_wavefracture and may not be backwards compatible for calls to icepack_step_therm2
  • #541 Update automated check for job completion for test suites
  • #539 Removed some unused code, updated information about conda installation on Mac.

Documentation

  • #549 Update and clarify uv and par radiation descriptions in code comments and documentation
  • #547 Fix typo in documentation

Summary of Icepack interface changes

  • icepack_parameters
    • Add wave_height_type (optional)
    • Add itd_area_min, itd_mass_min (optional)
  • icepack_step_therm2
    • Remove dwavefreq (was optional)
  • icepack_step_wavefrac
    • Remove wave_spec_type (redundant, set in icepack_parameters)
    • Add wave_height (optional)

Files

CICE-Consortium/Icepack-Icepack1.5.3.zip

Files (1.8 MB)

Name Size Download all
md5:4256b3a98e0496a936984a7c62ef3a57
1.8 MB Preview Download

Additional details

Related works

Is new version of
10.5281/zenodo.1213462 (DOI)
Is supplement to
https://github.com/CICE-Consortium/Icepack/tree/Icepack1.0.0 (URL)

Software

Repository URL
https://github.com/CICE-Consortium/Icepack