refactor nudging code to use cdeps on line remapping and interpolation

bld/namelist_files/namelist_definition.xml

@@ -220,32 +220,35 @@
        Default: FALSE
        </entry>
 
-<entry id="Nudge_Path" type="char*256" input_pathname="abs" category="nudging"
+<entry id="Nudge_Datapath" type="char*256" category="nudging"
        group="nudging_nl" valid_values="" >
-       Full pathname of analyses data to use for nudging.
-        (e.g. '/$DIN_LOC_ROOT/atm/cam/nudging/')
+       Full pathname of datapath where Nudge_Filenames are located.
        Default: none
        </entry>
 
-<entry id="Nudge_File_Template" type="char*80" category="nudging"
+<entry id="Nudge_Filenames" type="char*256(100)" category="nudging"
        group="nudging_nl" valid_values="" >
-       Template for Nudging analyses file names.
-        (e.g. '%y/ERAI_ne30np4_L30.cam2.i.%y-%m-%d-%s.nc')
+       Filenames of analyses data to use for nudging.
        Default: none
        </entry>
 
-<entry id="Nudge_Times_Per_Day" type="integer" category="nudging"
+<entry id="Nudge_Meshfile" type="char*256" category="nudging"
        group="nudging_nl" valid_values="" >
-       Number of analyses files per day.
-        (e.g. 4 --> 6 hourly analyses)
+       ESMF mesh file that corresponds to the nudging files
        Default: none
        </entry>
 
-<entry id="Model_Times_Per_Day" type="integer" category="nudging"
+<entry id="Nudge_lev_dimname" type="char*256" category="nudging"
+       group="nudging_nl" valid_values="" >
+       Name of vertical dimension in file.
+       Default: none
+       </entry>
+
+<entry id="Model_Update_Times_Per_Day" type="integer" category="nudging"
        group="nudging_nl" valid_values="" >
        Number of time to update model data per day.
         (e.g. 48 --> 1800 Second timestep)
-       Default: none
+       Default: 6
        </entry>
 
 <entry id="Nudge_Beg_Year" type="integer" category="nudging"
@@ -284,6 +287,12 @@
        Default: none
        </entry>
 
+<entry id="Nudge_Align_Year" type="integer" category="nudging"
+       group="nudging_nl" valid_values="" >
+       Model year to align with Nudge_Beg_Year.
+       Default: none
+       </entry>
+
 <entry id="Nudge_Force_Opt" type="integer" category="nudging"
        group="nudging_nl" valid_values="" >
        Select the form of nudging forcing, where (t'==Analysis times ; t==Model Times)
@@ -301,6 +310,24 @@
        Default: 0
        </entry>
 
+<entry id="Nudge_Mapalgo" type="char*256" category="nudging"
+       group="nudging_nl" valid_values="bilinear,consf" >
+       Mapping algorithm to map nudge data to model grid.
+       Default: bilinear
+       </entry>
+
+<entry id="Nudge_Taxmode" type="char*256" category="nudging"
+       group="nudging_nl" valid_values="limit,extend" >
+       Time extrapolation mode for time interpolation.
+       Default: limit
+       </entry>
+
+<entry id="Nudge_levname" type="char*256" category="nudging"
+       group="nudging_nl" valid_values="" >
+       Name of vertical variable in Nudge_filenames.
+       Default: bilinear
+       </entry>
+
 <entry id="Nudge_Uprof" type="integer" category="nudging"
        group="nudging_nl" valid_values="" >
        Profile index for U nudging.

src/cpl/nuopc/atm_comp_nuopc.F90

@@ -11,6 +11,7 @@ module atm_comp_nuopc
    use ESMF                , only : ESMF_DistGrid, ESMF_DistGridCreate
    use ESMF                , only : ESMF_Mesh, ESMF_MeshCreate, ESMF_MeshGet, ESMF_FILEFORMAT_ESMFMESH
    use ESMF                , only : ESMF_Clock, ESMF_ClockGet, ESMF_ClockSet, ESMF_ClockGetNextTime, ESMF_ClockAdvance
+   use ESMF                , only : ESMF_CLockCreate
    use ESMF                , only : ESMF_Time, ESMF_TimeGet
    use ESMF                , only : ESMF_Alarm, ESMF_ClockGetAlarm, ESMF_AlarmRingerOff, ESMF_AlarmIsRinging
    use ESMF                , only : ESMF_ClockGetAlarmList, ESMF_ALARMLIST_ALL, ESMF_AlarmSet