CICE-Consortium/CICE: CICE Version 6.1.4

• Main Authors: Elizabeth Hunke, Richard Allard, David A. Bailey, Philippe Blain, Anthony Craig, Frederic Dupont, Alice DuVivier, Robert Grumbine, David Hebert, Marika Holland, Nicole Jeffery, Jean-Francois Lemieux, Robert Osinski, Till Rasmussen, Mads Ribergaard, Andrew Roberts, Matthew Turner, Michael Winton
• Format: Software
• Language: English
• Published: 2020
• Subjects: sea ice model; CICE; Icepack; Sea ice
• Online Access: https://zenodo.org/record/4359860; https://doi.org/10.5281/zenodo.4359860

CICE6.1.4 is a minor update of CICE6.1.3 from August, 2020. It includes Icepack1.2.4. This release includes a new implicit solver for the VP rheology as well as a couple minor bug fixes in Icepack and in the box2001 forcing case. It also includes a couple changes to the namelists and updates to documentation. Major changes: Add an implicit solver for the VP rheology based on Picard iteration. This is a significant new option for solving the dynamics. It includes several new namelist variables and is triggered by setting kdyn=3 in the CICE namelist. The implementation is documented in the user guide and in the Pull Request. This is an initial version and is still being fully validated. #491 Bug fixes: Update Icepack to Icepack1.2.4. This includes two bug fixes. First, an extra and slightly different value for the floeshape parameter was removed. Now floeshape is defined consistently throughout as 0.66. This will change answers slightly but only for fsd cases. Second, the convergence check of Z/L, ustar, tstar, and qstar in atmo_boundary_layer was fixed. This may change answers but shouldn't affect science. #536 Fix an error in the masked halo update that was introduced in #491. This bug was on master only for 3 days, and it only affects padded decompositions. #517 Fix computation of stresses used in box2001 forcing by multiplying by ice concentrations correctly. This changes answers but only for box2001 forcing cases. #525, #526 Enhancements: Update the verbose log output to improve formatting and fix a few issues #540 Move sw_redist, sw_frac, sw_dtemp from the thermo to the shortwave namelist. Prior namelist files may not be backwards compatible #540 Update the timeseries plotting scripts, timeseries.csh and timeseries.py to improve data extraction from the log file #539 Add floediam and hfrazilmin to CICE namelist #536 Reintroduce upwind advection. This had been deprecated a few months ago. #535 Fix undefined tmpstr2 in ice_init #532 Check additional return codes in the bfbcomp testing tool to improve test ...