v1.4.0

This release maintains backward compatibility with the CMIP6 version of BLOM/iHAMOCC used by NorESM2.

Release highlights

• Major iHAMOCC code re-organization
  • most pre-processor flags ("ifdefs") replaced by logical flags that are read in via namelist
  • all subroutines placed in modules
  • new module mo_param_bgc collects all model parameters and routines for initialization of model parameters
• Major iHAMOCC code style changes (unified indentation, lower-case keywords)
• Added regression testing functionality for BLOM, when run as part of NorESM
• New mechanisms to create namelist files when run as part of NorESM (consistent with other NorESM components), through the file namelist_definition_blom.xml
• New mesoscale eddy diffusivity options
• C-isotope code for sediment now technically supported
• Added support for simulating Ocean Alkalinity Enhancement

What's Changed

• Bugfix pnetcdf by @TomasTorsvik in #208
• Fixed dust units and renamed calcium burial to CaCO3 burial by @jmaerz in #212
• Updates and corrections for CGS/MKS unit systems by @matsbn in #217
• Merged master into SI_units branch by @matsbn in #218
• Add option for surface pH output by @JorgSchwinger in #221
• Remove unused parameters in wrt* subroutine calls in ncout_hamocc.F90 by @JorgSchwinger in #222
• Import get_bgc_namelist only in subroutine where it is needed. by @TomasTorsvik in #225
• SI units by @milicak in #219
• fix missing ' by @jmaerz in #228
• Add linear ramping-up scenario for ocean alkalinisation by @TimotheeBrgs in #224
• Quick fix on buildnml after incomplete shell variable renaming from PR 224 by @TimotheeBrgs in #234
• Hamocc fix restart file units by @jmaerz in #239
• fix string count number by @jmaerz in #242
• Hybrid coordinate enhancements by @matsbn in #235
• add ability to read input file for ocean alkalinization by @TimotheeBrgs in #241
• add output for N-deposition and ocean alkalinization fluxes by @JorgSchwinger in #247
• fixed pnetcdf usage in CIME by @mvertens in #251
• New mesoscale eddy diffusivity options by @matsbn in #253
• Update config_pes for OMIP-2 simulations on Betzy by @TomasTorsvik in #248
• work around compile-time error in iHAMOCC when debug mode is activated by @JorgSchwinger in #256
• fix wrong parametes in C-isotop code by @JorgSchwinger in #257
• Hybrid coordinate enhancements 2 by @matsbn in #255
• add BLOM regression test functionality by @mvertens in #262
• Add file mo_boxatm.F90 by @JorgSchwinger in #265
• Add capability to run C-isotopes with sediment code switched on by @JorgSchwinger in #266
• Feature iHAMOCC nml by @jmaerz in #261
• refactor buildnml to use the CIME-CCS python based namelist generation capabilities by @mvertens in #263
• Set default of swaclimfile to empty string by @JorgSchwinger in #274
• Fix missing variables in use statements for C-isotope code by @JorgSchwinger in #276
• add riverine C-isotope input by @monsieuralok in #277
• remove #ifdefs from HAMOCC by @mvertens in #280
• Update ci.yml with ecosys enabled by @TomasTorsvik in #284
• Fixes to run C-isotopes by @JorgSchwinger in #286
• Fix bug in restart/initialization for C-isotope sediment fields by @JorgSchwinger in #287
• Add capability to run OAE experiments with an OmegaA threshold by @JorgSchwinger in #291
• Fix bug in powach.F90 C-isotope code by @JorgSchwinger in #290
• hotfix for line length issue by @jmaerz in #293
• migrate HAMOCC config settings to run time namelist settings by @mvertens in #281
• transfer most parameters into mo_param_bgc by @jmaerz in #294
• Move main sediment parameters to mo_param_bgc by @jmaerz in #297
• Remove dmspar variable by @JorgSchwinger in #300
• Some cosmetic changes by @JorgSchwinger in #299
• Remove variable bolven from sediment code, consistent treatment of dms parameters by @JorgSchwinger in #301
• Minor fixes for configuration and namelist creation by @JorgSchwinger in #303
• New hamocc formatting by @mvertens in #305
• Fix for omp bug found in the github actions by @mvertens in #307
• Feature code cosmetics2 by @JorgSchwinger in #308
• Exclude HAMOCC from compilation for cmp-flag ecosys=false by @jmaerz in #309

New Contributors

• @TimotheeBrgs made their first contribution in #224
• @mvertens made their first contribution in #251
• @monsieuralok made their first contribution in #277

Full Changelog: v1.3.0...v1.4.0