subroutine SetO3( xyz_Press, xyz_QO3 )


    ! USE statements
    !

    ! 
    ! Grid points settings
    !
    use gridset, only: imax, jmax, kmax    ! 
                               ! Number of vertical level

    ! ���¹ã�������¼ã�¿å�ºå��
    ! History data output
    !
    use gtool_historyauto, only: HistoryAutoAddVariable, HistoryAutoPut

    ! ���»ç���
    ! Time control
    !
    use timeset, only: TimeN, TimesetClockStart, TimesetClockStop

    ! ��ç³»å�����¼ã�¿ã����¿è¾¼��
    ! Reading time series
    !
    use read_time_series, only: SetValuesFromTimeSeriesWrapper

    ! ���¡ã�¤ã������ 1 次å�����­ã���¡ã�¤ã����読ã���§è¨­å®�����. 
    ! read 1-D profile from a file and set it 
    !
    use set_1d_profile, only : Set1DProfileO3


    real(DP), intent(in ):: xyz_Press(0:imax-1, 1:jmax, 1:kmax)
    real(DP), intent(out):: xyz_QO3  (0:imax-1, 1:jmax, 1:kmax)


    !
    ! Work variables
    !


    ! ������確è�
    ! Initialization check
    !
    if ( .not. set_o3_inited ) then
      call MessageNotify( 'E', module_name, 'This module has not been initialized.' )
    end if


    ! �����������
    ! Start measurement of computation time
    !
    call TimesetClockStart( module_name )


    if ( FlagO3 ) then

      if ( Flag1D ) then

        call Set1DProfileO3( xyz_Press, xyz_QO3 )

      else

        call SetValuesFromTimeSeriesWrapper( "O3", O3File, "O3", xyz_Press, xyz_QO3, .true., .true., .true. )

      end if

    else

      xyz_QO3 (:,:,:) = 0.0d0

    end if

    call HistoryAutoPut( TimeN, "O3", xyz_QO3 )


    ! ��������������
    ! Pause measurement of computation time
    !
    call TimesetClockStop( module_name )


  end subroutine SetO3

  subroutine SetO3Init


    ! ���¡ã�¤ã���¥å�ºå��è£���
    ! File I/O support
    !
    use dc_iounit, only: FileOpen

    ! ���¹ã�������¼ã�¿å�ºå��
    ! History data output
    !
    use gtool_historyauto, only: HistoryAutoAddVariable

    ! NAMELIST ���¡ã�¤ã���¥å�����¢ã�������¼ã���£ã������
    ! Utilities for NAMELIST file input
    !
    use namelist_util, only: namelist_filename, NmlutilMsg, NmlutilAryValid



    integer:: unit_nml        ! NAMELIST ���¡ã�¤ã�����¼ã���³ç���ç½����.
                              ! Unit number for NAMELIST file open
    integer:: iostat_nml      ! NAMELIST 読ã�¿è¾¼�¿æ���� IOSTAT.
                              ! IOSTAT of NAMELIST read

    ! NAMELIST å¤��°ç¾¤
    ! NAMELIST group name
    !
    namelist /set_O3_nml/ FlagO3, Flag1D, O3File
          !
          ! �����������¤ã���¤ã��������������ç¶� "set_o3#SetO3Init"
          ! ���½ã�¼ã�¹ã�³ã�¼ã�������§ã������.
          !
          ! Refer to source codes in the initialization procedure
          ! "set_o3#SetO3Init" for the default values.
          !

    if ( set_o3_inited ) return


    ! �����������¤ã��¨­å®�
    ! Default values settings
    !

    FlagO3 = .true.

    Flag1D = .false.

    O3File = ""


    ! NAMELIST ����¿è¾¼��
    ! NAMELIST is input
    !
    if ( trim(namelist_filename) /= '' ) then
      call FileOpen( unit_nml, namelist_filename, mode = 'r' ) ! (in)

      rewind( unit_nml )
      read( unit_nml, nml = set_O3_nml, iostat = iostat_nml )             ! (out)
      close( unit_nml )

      call NmlutilMsg( iostat_nml, module_name ) ! (in)
    end if


    call HistoryAutoAddVariable( "O3", (/ 'lon ', 'lat ', 'sig ', 'time' /), "ozone", 'kg kg-1' )                     ! (in)

    ! �°å� ; Print
    !
    call MessageNotify( 'M', module_name, '----- Initialization Messages -----' )
    call MessageNotify( 'M', module_name, '  FlagO3 = %b', l = (/ FlagO3 /) )
    call MessageNotify( 'M', module_name, '  Flag1D = %b', l = (/ Flag1D /) )
    call MessageNotify( 'M', module_name, '  O3File = %c', c1 = trim( O3File ) )
    call MessageNotify( 'M', module_name, '-- version = %c', c1 = trim(version) )


    set_o3_inited = .true.

  end subroutine SetO3Init