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, intent(out) :: rc

    ! Local variables
    type(ESMF_FieldBundle) :: srcFieldBundle, dstFieldBundle

    ! Initialize return code
    rc = ESMF_SUCCESS

    print *, "User Coupler Run starting"

    ! Get source FieldBundle out of import State
    call ESMF_StateGet(importState, "fieldbundle data", srcFieldBundle, rc=rc)
    if (rc/=ESMF_SUCCESS) call ESMF_Finalize(rc=rc, endflag=ESMF_END_ABORT)

    ! Get destination FieldBundle out of export State
    call ESMF_StateGet(exportState, "fieldbundle data", dstFieldBundle, rc=rc)
    if (rc/=ESMF_SUCCESS) call ESMF_Finalize(rc=rc, endflag=ESMF_END_ABORT)

    ! Use FieldBundleRegrid() to take data from srcFieldBundle to dstFieldBundle
    call ESMF_FieldBundleRegrid(srcFieldBundle=srcFieldBundle, dstFieldBundle=dstFieldBundle, &
      routehandle=routehandle, rc=rc)
    if (rc/=ESMF_SUCCESS) call ESMF_Finalize(rc=rc, endflag=ESMF_END_ABORT)
  
    print *, "User Coupler Run returning"

  end subroutine user_run