Grib2 writer for oceanicepost

[AminIlia-NOAA]

Description

A new grib2 writer added to oceanicepost module. It uses g2 library to build grib2 files. The module doesn't need any grib2 template. The module fully tested for ocean and ice post processing. It works smoothly and quickly.

Type of change

• New feature (adds functionality)

Change characteristics

• Is this a breaking change (a change in existing functionality)? YES
• Does this change require a documentation update? NO

How has this been tested?

Fully tested both ocean and ice post processing modules. Grib2 files and data are generated correctly.

Checklist

• [*] Any dependent changes have been merged and published
• [*] My code follows the style guidelines of this project
• [*] I have performed a self-review of my own code
• [*] I have commented my code, particularly in hard-to-understand areas
• [*] My changes generate no new warnings
• [*] New and existing tests pass with my changes
• [*] I have made corresponding changes to the documentation if necessary

[aerorahul]

I know grib2 fortran very well. Also, everything set correctly. Please go ahead and merge it into the main repo. Thanks!

Sounds good.
I will merge it and open an issue in the global-workflow to update the configuration to write out the grib2 file directly.
I will leave the validation for the retrospectives.

[aerorahul]

Some minor comments before we can merge.

[AminIlia-NOAA]

@aerorahul I resolved the suggestions.

[aerorahul]

@aerorahul I resolved the suggestions.

@AminIlia-NOAA
Thank you for resolving the comments. I have one additional comment regarding the output in netcdf.

[AminIlia-NOAA]

@aerorahul added netcdf flag with default false.

[aerorahul]

use netcdf (we don't have to be limited to 2-3 character names) to be more descriptive.

[AminIlia-NOAA]

@aerorahul ncf was ok as fortran compiler mixed netcdf flag with necdf lib module. I changed the name of flag to netcdff.

[aerorahul]

@aerorahul ncf was ok as fortran compiler mixed netcdf flag with necdf lib module. I changed the name of flag to netcdff.

May I suggest, in that case, to replace netcdff with write_netcdf and grib2 with write_grib2.

[AminIlia-NOAA]

@aerorahul I changed the name of the flags. Please let me know if you want to request more change so I will give you the right access to edit my fork. Thanks!

[aerorahul]

looks good.

[aerorahul]

Since we don't have a reviewer for the new additions of grib2 output, we will merge this PR as is and if issues arise, address them during retrospective evaluation. With this change, we will disable the generation of grib2 files via the use of wgrib2.