subroutine SaturateMajorCompInit( CondMajCompName )
    !
    ! saturate_major_comp モジュールの初期化を行います. 
    ! NAMELIST#saturate_major_comp_nml の読み込みはこの手続きで行われます. 
    !
    ! "saturate_major_comp" module is initialized. 
    ! "NAMELIST#saturate_major_comp_nml" is loaded in this procedure. 
    !

    ! モジュール引用 ; USE statements
    !

!!$    ! NAMELIST ファイル入力に関するユーティリティ
!!$    ! Utilities for NAMELIST file input
!!$    !
!!$    use namelist_util, only: namelist_filename, NmlutilMsg, NmlutilAryValid
!!$
!!$    ! ファイル入出力補助
!!$    ! File I/O support
!!$    !
!!$    use dc_iounit, only: FileOpen
!!$
!!$    ! 種別型パラメタ
!!$    ! Kind type parameter
!!$    !
!!$    use dc_types, only: STDOUT ! 標準出力の装置番号. Unit number of standard output

    ! 文字列操作
    ! Character handling
    !
    use dc_string, only: StoA

    != 
    != CO2 condensation temperature (Pollack et al., 1981)
    !
    use saturate_co2_p81, only : SaturateCO2P81Init


    ! 宣言文 ; Declaration statements
    !
    implicit none

    character(*), intent(in) :: CondMajCompName
                                        ! Condensable major component


!!$    integer:: unit_nml        ! NAMELIST ファイルオープン用装置番号. 
!!$                              ! Unit number for NAMELIST file open
!!$    integer:: iostat_nml      ! NAMELIST 読み込み時の IOSTAT. 
!!$                              ! IOSTAT of NAMELIST read

    ! NAMELIST 変数群
    ! NAMELIST group name
    !
!!$    namelist /saturate_major_comp_nml/ &
!!$      & FlagUse

          ! デフォルト値については初期化手続 "saturate_major_comp#MajorCompSaturateInit" 
          ! のソースコードを参照のこと. 
          !
          ! Refer to source codes in the initialization procedure
          ! "saturate_major_comp#MajorCompSaturateInit" for the default values. 
          !

    ! 実行文 ; Executable statement
    !

    if ( saturate_major_comp_inited ) return


    ! デフォルト値の設定
    ! Default values settings
    !


    ! NAMELIST の読み込み
    ! NAMELIST is input
    !
!!$    if ( trim(namelist_filename) /= '' ) then
!!$      call FileOpen( unit_nml, &          ! (out)
!!$        & namelist_filename, mode = 'r' ) ! (in)
!!$
!!$      rewind( unit_nml )
!!$      read( unit_nml,                    &  ! (in)
!!$        & nml = saturate_major_comp_nml, &  ! (out)
!!$        & iostat = iostat_nml )             ! (out)
!!$      close( unit_nml )
!!$
!!$      call NmlutilMsg( iostat_nml, module_name ) ! (in)
!!$!      if ( iostat_nml == 0 ) write( STDOUT, nml = cumulus_adjust_nml )
!!$    end if


    ! Set index
    select case ( CondMajCompName )
    case ( 'CO2' )
      IndexSpc = IndexSpcCO2
    case default
      call MessageNotify( 'E', module_name, 'This specice is not supported.' )
    end select


    ! Initialization of modules called in this module
    !

    != 
    != CO2 condensation temperature (Pollack et al., 1981)
    !
    call SaturateCO2P81Init


    ! 印字 ; Print
    !
    call MessageNotify( 'M', module_name, '----- Initialization Messages -----' )
    call MessageNotify( 'M', module_name, '-- version = %c', c1 = trim(version) )


    saturate_major_comp_inited = .true.

  end subroutine SaturateMajorCompInit

  function SaturateMajorCompInqLatentHeat( ) result( LatentHeat )
    !
    ! 主成分の潜熱を返しします. 
    !
    ! Inquiry of latent heat of major component
    !

    ! モジュール引用 ; USE statements
    !

    ! メッセージ出力
    ! Message output
    !
    use dc_message, only: MessageNotify

    ! 宣言文 ; Declaration statements
    !
    implicit none

    real(DP) :: LatentHeat


    ! 実行文 ; Executable statement
    !

    ! 初期化
    ! Initialization
    !
    if ( .not. saturate_major_comp_inited ) then
      call MessageNotify( 'E', module_name, 'This module has not been initialized.' )
    end if


    ! Set latent heat
    select case ( IndexSpc )
    case ( IndexSpcCO2  )
      LatentHeat = LatentHeatCO2Subl
    case default
      call MessageNotify( 'E', module_name, 'This specice is not supported.' )
    end select


  end function SaturateMajorCompInqLatentHeat

  subroutine SaturateMajorCompCalcCondTemp2D( xy_Press, xy_TempCond )
    !
    ! 主成分相変化
    !
    ! Major component phase change
    !

    ! モジュール引用 ; USE statements
    !


    ! 宣言文 ; Declaration statements
    !
    implicit none

    real(DP), intent(in ):: xy_Press   (:,:)
                              ! $ p $ . 気圧 (整数レベル). 
                              ! Air pressure (full level)
    real(DP), intent(out):: xy_TempCond(:,:)
                              !
                              ! Condensation temperature

    ! 作業変数
    ! Work variables
    !
    real(DP) :: xyz_Press   (size(xy_Press   ,1),size(xy_Press   ,2),1)
    real(DP) :: xyz_TempCond(size(xy_TempCond,1),size(xy_TempCond,2),1)


    ! 実行文 ; Executable statement
    !


    ! 初期化
    ! Initialization
    !
    if ( .not. saturate_major_comp_inited ) then
      call MessageNotify( 'E', module_name, 'This module has not been initialized.' )
    end if

    xyz_Press(:,:,1) = xy_Press

    call SaturateMajorCompCalcCondTemp3D( xyz_Press, xyz_TempCond )

    xy_TempCond = xyz_TempCond(:,:,1)


  end subroutine SaturateMajorCompCalcCondTemp2D

  subroutine SaturateMajorCompCalcCondTemp3D( xyz_Press, xyz_TempCond )
    !
    ! 主成分相変化
    !
    ! Major component phase change
    !

    ! モジュール引用 ; USE statements
    !

    != 
    != CO2 condensation temperature (Pollack et al., 1981)
    !
    use saturate_co2_p81, only : xyz_SaturateCO2P81TempCond


    ! 宣言文 ; Declaration statements
    !
    implicit none

    real(DP), intent(in ):: xyz_Press   (:,:,:)
                              ! $ p $ . 気圧 (整数レベル). 
                              ! Air pressure (full level)
    real(DP), intent(out):: xyz_TempCond(:,:,:)
                              !
                              ! Condensation temperature

    ! 作業変数
    ! Work variables
    !

    ! 実行文 ; Executable statement
    !


    ! 初期化
    ! Initialization
    !
    if ( .not. saturate_major_comp_inited ) then
      call MessageNotify( 'E', module_name, 'This module has not been initialized.' )
    end if


    select case ( IndexSpc )
    case ( IndexSpcCO2 )
      ! CO2 condensation temperature

      xyz_TempCond = xyz_SaturateCO2P81TempCond( xyz_Press )

    end select


  end subroutine SaturateMajorCompCalcCondTemp3D