Add restart_coszen namelist option

cicecore/cicedynB/general/ice_init.F90

@@ -73,7 +73,7 @@ subroutine input_data
           restart_pond_cesm, restart_pond_lvl, restart_pond_topo, restart_aero, &
           restart_fsd, restart_iso
       use ice_restart_shared, only: &
-          restart, restart_ext, restart_dir, restart_file, pointer_file, &
+          restart, restart_ext, restart_coszen, restart_dir, restart_file, pointer_file, &
           runid, runtype, use_restart_time, restart_format, lcdf64
       use ice_history_shared, only: hist_avg, history_dir, history_file, &
                              incond_dir, incond_file, version_name, &
@@ -149,7 +149,8 @@ subroutine input_data
         dt,             npt,            ndtd,            numin,         &
         runtype,        runid,          bfbflag,         numax,         &
         ice_ic,         restart,        restart_dir,     restart_file,  &
-        restart_ext,    use_restart_time, restart_format, lcdf64,       &
+        restart_ext,    restart_coszen, use_restart_time, restart_format, &
+        lcdf64,       &
         pointer_file,   dumpfreq,       dumpfreq_n,      dump_last,     &
         diagfreq,       diag_type,      diag_file,       history_format,&
         print_global,   print_points,   latpnt,          lonpnt,        &
@@ -269,6 +270,7 @@ subroutine input_data
       restart_dir  = './'     ! write to executable dir for default
       restart_file = 'iced'  ! restart file name prefix
       restart_ext  = .false. ! if true, read/write ghost cells
+      restart_coszen  = .false. ! if true, read/write coszen
       use_restart_time = .true.   ! if true, use time info written in file
       pointer_file = 'ice.restart_file'
       restart_format = 'default'  ! restart file format
@@ -563,6 +565,7 @@ subroutine input_data
       call broadcast_scalar(restart,            master_task)
       call broadcast_scalar(restart_dir,        master_task)
       call broadcast_scalar(restart_ext,        master_task)
+      call broadcast_scalar(restart_coszen,     master_task)
       call broadcast_scalar(use_restart_time,   master_task)
       call broadcast_scalar(restart_format,     master_task)
       call broadcast_scalar(lcdf64,             master_task)
@@ -1458,6 +1461,7 @@ subroutine input_data
          write(nu_diag,*)    ' restart_dir               = ', &
                                trim(restart_dir)
          write(nu_diag,*)    ' restart_ext               = ', restart_ext
+         write(nu_diag,*)    ' restart_coszen            = ', restart_coszen
          write(nu_diag,*)    ' restart_format            = ', &
                                trim(restart_format)
          write(nu_diag,*)    ' lcdf64                    = ', &

cicecore/cicedynB/infrastructure/ice_restart_driver.F90

@@ -23,7 +23,7 @@ module ice_restart_driver
           field_loc_center, field_loc_NEcorner, &
           field_type_scalar, field_type_vector
       use ice_restart_shared, only: restart_dir, pointer_file, &
-          runid, use_restart_time, lenstr
+          runid, use_restart_time, lenstr, restart_coszen
       use ice_restart
       use ice_exit, only: abort_ice
       use ice_fileunits, only: nu_diag, nu_rst_pointer, nu_restart, nu_dump
@@ -130,7 +130,9 @@ subroutine dumpfile(filename_spec)
       !-----------------------------------------------------------------
       ! radiation fields
       !-----------------------------------------------------------------
-      call write_restart_field(nu_dump,0,coszen,'ruf8','coszen',1,diag)
+
+      if (restart_coszen) call write_restart_field(nu_dump,0,coszen,'ruf8','coszen',1,diag)
+
       call write_restart_field(nu_dump,0,scale_factor,'ruf8','scale_factor',1,diag)
 
       call write_restart_field(nu_dump,0,swvdr,'ruf8','swvdr',1,diag)
@@ -304,8 +306,7 @@ subroutine restartfile (ice_ic)
       if (my_task == master_task) &
          write(nu_diag,*) 'radiation fields'
 
-      call read_restart_field(nu_restart,0,coszen,'ruf8', &
-!           'coszen',1,diag, field_loc_center, field_type_scalar)
+      if (restart_coszen) call read_restart_field(nu_restart,0,coszen,'ruf8', &
            'coszen',1,diag)
       call read_restart_field(nu_restart,0,scale_factor,'ruf8', &
            'scale_factor',1,diag, field_loc_center, field_type_scalar)

cicecore/cicedynB/infrastructure/io/io_netcdf/ice_restart.F90

@@ -11,7 +11,7 @@ module ice_restart
       use netcdf
       use ice_restart_shared, only: &
           restart_ext, restart_dir, restart_file, pointer_file, &
-          runid, use_restart_time, lcdf64, lenstr
+          runid, use_restart_time, lcdf64, lenstr, restart_coszen
       use ice_fileunits, only: nu_diag, nu_rst_pointer
       use ice_exit, only: abort_ice
       use icepack_intfc, only: icepack_query_parameters
@@ -226,8 +226,9 @@ subroutine init_restart_write(filename_spec)
 
          call define_rest_field(ncid,'uvel',dims)
          call define_rest_field(ncid,'vvel',dims)
+
+         if (restart_coszen) call define_rest_field(ncid,'coszen',dims)
 
-         call define_rest_field(ncid,'coszen',dims)
          call define_rest_field(ncid,'scale_factor',dims)
          call define_rest_field(ncid,'swvdr',dims)
          call define_rest_field(ncid,'swvdf',dims)

cicecore/cicedynB/infrastructure/io/io_pio2/ice_restart.F90

@@ -11,7 +11,8 @@ module ice_restart
       use ice_kinds_mod
       use ice_restart_shared, only: &
           restart, restart_ext, restart_dir, restart_file, pointer_file, &
-          runid, runtype, use_restart_time, restart_format, lcdf64, lenstr
+          runid, runtype, use_restart_time, restart_format, lcdf64, lenstr, &
+          restart_coszen
       use ice_pio
       use pio
       use icepack_intfc, only: icepack_warnings_flush, icepack_warnings_aborted
@@ -245,10 +246,7 @@ subroutine init_restart_write(filename_spec)
 
          call define_rest_field(File,'uvel',dims)
          call define_rest_field(File,'vvel',dims)
-
-#ifdef CESMCOUPLED
-         call define_rest_field(File,'coszen',dims)
-#endif
+         if (restart_coszen) call define_rest_field(File,'coszen',dims)
          call define_rest_field(File,'scale_factor',dims)
          call define_rest_field(File,'swvdr',dims)
          call define_rest_field(File,'swvdf',dims)

cicecore/shared/ice_restart_shared.F90

@@ -11,6 +11,7 @@ module ice_restart_shared
       logical (kind=log_kind), public :: &
          restart    , &   ! if true, initialize using restart file instead of defaults
          restart_ext, &   ! if true, read/write extended grid (with ghost cells)
+         restart_coszen, &   ! if true, read/write coszen
          use_restart_time ! if true, use time written in core restart file
 
       character (len=char_len), public :: &

configuration/scripts/ice_in

@@ -10,6 +10,7 @@
     ice_ic         = './restart/iced_gx3_v5.nc'
     restart        = .true.
     restart_ext    = .false.
+    restart_coszen = .false.
     use_restart_time = .true.
     restart_format = 'default'
     lcdf64         = .false.

doc/source/cice_index.rst

@@ -523,6 +523,7 @@ either Celsius or Kelvin units).
    "restart_format", ":math:`\bullet` restart file format", ""
    "restart_[tracer]", ":math:`\bullet` if true, read tracer restart file", ""
    "restart_ext", ":math:`\bullet` if true, read/write halo cells in restart file", ""
+   "restart_coszen", ":math:`\bullet` if true, read/write coszen in restart file", ""
    "restore_bgc", ":math:`\bullet` if true, restore nitrate/silicate to data", ""
    "restore_ice", ":math:`\bullet` if true, restore ice state along lateral boundaries", ""
    "restore_ocn", ":math:`\bullet` restore sst to data", ""

doc/source/user_guide/ug_case_settings.rst

@@ -148,6 +148,7 @@ setup_nml
    "``restart``", "logical", "initialize using restart file", "``.false.``"
    "``restart_dir``", "string", "path to restart directory", "'./'"
    "``restart_ext``", "logical", "read/write halo cells in restart files", "``.false.``"
+   "``restart_coszen``", "logical", "read/write coszen in restart files", "``.false.``"
    "``restart_file``", "string", "output file prefix for restart dump", "'iced'"
    "``restart_format``", "``default``", "read/write restart file with default format", "``default``"
    "", "``pio_pnetcdf``", "read/write restart files with pnetcdf in pio", ""

doc/source/user_guide/ug_implementation.rst

@@ -569,6 +569,10 @@ An additional namelist option, ``restart_ext`` specifies whether halo cells
 are included in the restart files. This option is useful for tripole and
 regional grids, but can not be used with PIO.
 
+An additional namelist option, ``restart_coszen`` specifies whether the
+cosine of the zenith angle is included in the restart files. This is mainly
+used in coupled models.
+
 MPI is initialized in *init\_communicate* for both coupled and
 stand-alone MPI runs. The ice component communicates with a flux coupler
 or other climate components via external routines that handle the