user_run Subroutine

    subroutine user_run(comp, importState, exportState, clock, rc)
      type(ESMF_CplComp) :: comp
      type(ESMF_State) :: importState, exportState
      type(ESMF_Clock) :: clock
      integer :: rc

      ! Local variables
      type(ESMF_Field) :: humidity1, humidity2

      print *, "User Coupler Run starting"

      ! Get input data
      call ESMF_StateGetField(importState, "humidity", humidity1, rc=rc)
      if (rc .ne. ESMF_SUCCESS) goto 10
      ! call ESMF_FieldPrint(humidity1, rc=rc)

      ! Get location of output data
      call ESMF_StateGetField(exportState, "humidity", humidity2, rc=rc)
      if (rc .ne. ESMF_SUCCESS) goto 10
      ! call ESMF_FieldPrint(humidity2, rc=rc)

      ! These are fields on different IGrids - call Regrid to rearrange
      !  the data.   The communication pattern was computed at init,
      !  this simply has to execute the send and receive equivalents.

      call ESMF_FieldRegrid(humidity1, humidity2, routehandle, rc=rc)
      if (rc .ne. ESMF_SUCCESS) goto 10

      ! Data is moved directly to the field in the output state, so no
      ! "put" is needed here.
 
      print *, "User Coupler Run returning"

      rc = ESMF_SUCCESS
      return

      ! only come here on error
10 continue
      rc = ESMF_FAILURE
 

    end subroutine user_run