Change in MOM5/MOM6 History Upcoming

[mathomp4]

Recently, @atrayano fixed a bug (#1064) that the Harvard folks were encountering. However, it has possible effect on any HISTORY.rc that has a collection with duration and frequency. I think the ADAS History escapes because all it's duration and frequency are the same. But the HISTORY.AOGCM.rc.tmpl has this:

   geosgcm_icesig.template:  '%y4%m2%d2_%h2%n2z.nc4',
   geosgcm_icesig.archive:   '%c/Y%y4',
   geosgcm_icesig.format:    'CFIO',
   geosgcm_icesig.frequency: 120000,
   geosgcm_icesig.duration:  240000,
   geosgcm_icesig.fields:    'SIG1'          , 'SEAICE',
                             'SIG2'          , 'SEAICE',
                             'SHEAR'         , 'SEAICE',
                             'DIVU'          , 'SEAICE',
                           ::

So, with older versions of MAPL before this bug fix, a 1 day run would produce two files:

1day.geosgcm_icesig.19921201_1200z.nc4
1day.geosgcm_icesig.19921202_0000z.nc4

each with a single time-step. Now, however, MAPL is doing the right thing and putting both timesteps in a single file:

1day.geosgcm_icesig.19921201_1200z.nc4

I wanted to let @sanAkel and @yvikhlya know about this so it's not a surprise.