Marine analysis final task fails

[JohnSteffen-NOAA]

Currently the gdas_maineanlfinal task is failing when calling the obs_space_stats. An example logfile is available here:

/scratch1/NCEPDEV/da/John.Steffen/expts/marine_test_112024/marine_test_112024/COMROOT/marine_test_112024/logs/2021063006/gdas_marineanlfinal.log.0

During execution of the gdassoca_obsstats.x , one of the obserational netcdf4 files, insitu_profile_tesac.2021063006.nc4 attempts to access a group/variable named ombg/salinity which does not exist within that file. This causes the job to fail.

A temporary "fix" is to replace line L458 of /global-workflow/ush/python/pygfs/task/marine_analysis.py with
variable = next(iter(nc.groups["ombg"].variables))

A more comprehensive solution is to error trap within the code.