[Ncep.list.emc.fv3gfs_tickets] FV3GFS Ticket #20: Update global_cycle to run on FV3 cubed-sphere grid

[FV3GFS Trac Ticket]

#20: Update global_cycle to run on FV3 cubed-sphere grid
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  Reporter:  george.gayno@…  |      Owner:  george.gayno@…
      Type:  task            |     Status:  accepted
  Priority:  major           |  Milestone:
 Component:  component1      |    Version:
Resolution:                  |   Keywords:
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Comment (by george.gayno@…):

 '''r98166'''

 The interpolation of the GSI TREF increment to the model native grid is
 now bilinear to be consistent with how the forecast model interpolates
 atmospheric increments.

 The model routine that computes the bilinear weights -
 [https://svnemc.ncep.noaa.gov/trac/fv3/browser/trunk/atmos_cubed_sphere/tools/fv_treat_da_inc.F90?rev=97779#L336
 remap_coef] - was incorporated in
 [https://svnemc.ncep.noaa.gov/trac/fv3gfs/browser/branches/cycle_fv3/global_shared.v15.0.0/sorc/global_cycle.fd/cycle.f90?rev=98166
 cycle.f90]. This routine assumes the south pole is row '1', so remove the
 'flip' of the GSI data in routine
 [https://svnemc.ncep.noaa.gov/trac/fv3gfs/browser/branches/cycle_fv3/global_shared.v15.0.0/sorc/global_cycle.fd/read_write_data.f90?rev=98166#L1002
 read_write_data].

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Ticket URL: <https://svnemc.ncep.noaa.gov/trac/fv3gfs/ticket/20#comment:18>
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