Draft v1.4.0 release

[TomasTorsvik]

@matsbn @JorgSchwinger @jmaerz @mvertens I have created a draft v1.4.0 release on master: https://github.com/NorESMhub/BLOM/releases

So far, only including changelog relative to v1.3.0. Are there any suggestions for highlights on this release?

This should be the last CMIP6 compatible BLOM/iHAMOCC version.

[JorgSchwinger]

Maybe we should add a summary of the most important changes ("Release highlights")? Here is my suggestion (did I forget something important?)

• 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
• New mechanisms to create namelist files (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

[mvertens]

@JorgSchwinger - this looks good. Thanks for drafting it. I would qualify that the regression testing in BLOM is only functional when run as part of Noresm - not stand-alone blom. Similarly the namelist creation is only implemented for BLOM running as part of Noresm.

[TomasTorsvik]

@JorgSchwinger , @mvertens - Thanks for your suggestions! I have included them in the draft release text. @matsbn , @jmaerz - Anything to add? If I don't hear back by tomorrow (Friday) afternoon, I will assume this is good to go and created the release.

[jmaerz]

Hi @TomasTorsvik , no additions from my side. Thanks for drafting the release!