POP aborting... (init_moc_ts_transport_arrays) SH is not a regular lat-lon grid. The southern boundary for region 2 ("Atlantic") cannot be specified.

[shiannder]

I am running CESMv2.1.3 with the compset 1850_DATM%IAF_SLND_CICE_POP2%ECO_DROF%IAF_SGLC_SWAV using modifications in several files below that add 2 new diagnostics for dissolved organic carbon (semilabile and refractory) sink and source from hydrothermal vents. The model has run successfully before when i separated the source and sink runs and used the slab wave model, but now that I am adding the source and sink code together in one model run, I get the error below in my cesm.log from jsl.382 run. Is there any fix for this POP aborting?

POP aborting...
(init_moc_ts_transport_arrays) SH is not a regular lat-lon grid. The southern boundary for region 2 ("Atlantic") cannot be specified.

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(init_moc_ts_transport_arrays) SH is not a regular lat-lon grid. The southern boundary for region 2 ("Atlantic") cannot be specified.

Modified files

• build-namelist
• namelist_defaults_pop.xml
• namelist_definition_pop.xml
• ecosys_forcing_mod.F90
• diagnostics_latest.yaml
• mabl_diagnostics_mod.F90
• marbl_interior_tendency_mod.F90
• marbl_interface_private_types.F90
• marbl_init_mod.F90
• marbl_settings_mod.F90
• user_nl_pop_ventdoc_combind.x3Feinputs

user_nl_pop_ventdoc_combind.x3Feinputs uses 2 new boundary files for the hydrothermal venting and removal of DOC that have worked before.

docventflux_input%filename = '/mnt/lustre/letscher/shared/SourceCode_gx3v7/docvent_gx3v7_2025_modified_with_DOCSEDFLUXIN.nc'
docventflux_input%file_fmt = 'nc'
docventflux_input%file_varname = 'DOCSEDFLUXIN'
docventflux_input%scale_factor = 100

docfluidy_input%filename = '/mnt/lustre/letscher/shared/SourceCode_gx3v7/doc_vent_removal_DOCFLUIDYR.nc'
docfluidy_input%file_fmt = 'nc'
docfluidy_input%file_varname = 'DOCFLUIDYR'
docfluidy_input%scale_factor = 3.1686e-8