subroutine SurfaceFlux( xyz_U, xyz_V, xyz_Temp, xyr_Temp, xyr_Press, xy_SurfHeight, xyz_Height, xyz_Exner, xyr_Exner, xy_SurfTemp, xy_SurfRoughLength, xyr_UFlux, xyr_VFlux, xyr_TempFlux, xy_SurfVelTransCoef, xy_SurfTempTransCoef )
    !
    ! 速度, 温度の表面フラックスと輸送係数を計算します. 
    !
    ! Surface fluxes and transfer coefficients of velocity and temperature.
    ! 
    !

    ! モジュール引用 ; USE statements
    !

    ! 物理定数設定
    ! Physical constants settings
    !
    use constants, only: Grav, GasRDry, CpDry
                              ! $ C_p $ [J kg-1 K-1]. 
                              ! 乾燥大気の定圧比熱. 
                              ! Specific heat of air at constant pressure

    ! 時刻管理
    ! Time control
    !
    use timeset, only: TimeN, TimesetClockStart, TimesetClockStop

    ! デバッグ用ユーティリティ
    ! Utilities for debug
    !
    use dc_trace, only: DbgMessage, BeginSub, EndSub

    ! 宣言文 ; Declaration statements
    !
    implicit none
    real(DP), intent(in):: xyz_U (0:imax-1, 1:jmax, 1:kmax)
                              ! $ u $ . 東西風速. Eastward wind
    real(DP), intent(in):: xyz_V (0:imax-1, 1:jmax, 1:kmax)
                              ! $ v $ . 南北風速. Northward wind

    real(DP), intent(in):: xyz_Temp (0:imax-1, 1:jmax, 1:kmax)
                              ! $ T $ . 温度 (整数レベル). 
                              ! Temperature (full level)
    real(DP), intent(in):: xyr_Temp (0:imax-1, 1:jmax, 0:kmax)
                              ! $ T $ . 温度 (半整数レベル). 
                              ! Temperature (half level)
    real(DP), intent(in):: xyr_Press (0:imax-1, 1:jmax, 0:kmax)
                              ! $ p_s $ . 地表面気圧 (半整数レベル). 
                              ! Surface pressure (half level)
    real(DP), intent(in):: xy_SurfHeight(0:imax-1,1:jmax)
                              ! $ z_s $ . 地表面高度. 
                              ! Surface height. 
    real(DP), intent(in):: xyz_Height (0:imax-1, 1:jmax, 1:kmax)
                              ! 高度 (整数レベル). 
                              ! Height (full level)
    real(DP), intent(in):: xyz_Exner (0:imax-1, 1:jmax, 1:kmax)
                              ! Exner 関数 (整数レベル). 
                              ! Exner function (full level)
    real(DP), intent(in):: xyr_Exner (0:imax-1, 1:jmax, 0:kmax)
                              ! Exner 関数 (半整数レベル). 
                              ! Exner function (half level)
    real(DP), intent(in):: xy_SurfTemp (0:imax-1, 1:jmax)
                              ! 地表面温度. 
                              ! Surface temperature
    real(DP), intent(in):: xy_SurfRoughLength (0:imax-1, 1:jmax)
                              ! 地表粗度長. 
                              ! Surface rough length
    real(DP), intent(inout):: xyr_UFlux (0:imax-1, 1:jmax, 0:kmax)
                              ! 東西風速フラックス. 
                              ! Eastward wind flux
    real(DP), intent(inout):: xyr_VFlux (0:imax-1, 1:jmax, 0:kmax)
                              ! 南北風速フラックス. 
                              ! Northward wind flux
    real(DP), intent(inout):: xyr_TempFlux (0:imax-1, 1:jmax, 0:kmax)
                              ! 温度フラックス. 
                              ! Temperature flux
    real(DP), intent(out):: xy_SurfVelTransCoef (0:imax-1, 1:jmax)
                              ! 輸送係数：運動量. 
                              ! Diffusion coefficient: velocity
    real(DP), intent(out):: xy_SurfTempTransCoef (0:imax-1, 1:jmax)
                              ! 輸送係数：温度. 
                              ! Transfer coefficient: temperature

    ! 作業変数
    ! Work variables
    !
    real(DP):: xy_SurfBulkRiNum (0:imax-1, 1:jmax)
                              ! バルク $ R_i $ 数. 
                              ! Bulk $ R_i $ number
    real(DP):: xy_SurfTempBulkCoef (0:imax-1, 1:jmax)
                              ! バルク係数：温度. 
                              ! Bulk coefficient: temperature
    real(DP):: xy_SurfVelBulkCoef (0:imax-1, 1:jmax)
                              ! バルク係数：運動量. 
                              ! Bulk coefficient: temperature
    real(DP):: xy_SurfVelAbs (0:imax-1, 1:jmax)
                              ! 風速絶対値. 
                              ! Absolute velocity

    real(DP):: xy_UFluxSurf (0:imax-1, 1:jmax)
                              ! 地表面の東西風速フラックス. 
                              ! Eastward wind flux on surface
    real(DP):: xy_VFluxSurf (0:imax-1, 1:jmax)
                              ! 地表面の南北風速フラックス. 
                              ! Northward wind flux on surface
    real(DP):: xy_TempFluxSurf (0:imax-1, 1:jmax)
                              ! 地表面の温度フラックス. 
                              ! Temperature flux on surface

    integer:: i               ! 経度方向に回る DO ループ用作業変数
                              ! Work variables for DO loop in longitude
    integer:: j               ! 緯度方向に回る DO ループ用作業変数
                              ! Work variables for DO loop in latitude
    integer:: n               ! 組成方向に回る DO ループ用作業変数
                              ! Work variables for DO loop in dimension of constituents

    ! 実行文 ; Executable statement
    !

    ! 計算時間計測開始
    ! Start measurement of computation time
    !
    call TimesetClockStart( module_name )

    ! 初期化
    ! Initialization
    !
    if ( .not. surface_flux_bulk_inited ) call SurfFluxInit

    ! バルク $ R_i $ 数算出
    ! Calculate bulk $ R_i $
    !
    do j = 1, jmax
      do i = 0, imax-1
        xy_SurfVelAbs(i,j) = sqrt ( xyz_U(i,j,1)**2 + xyz_V(i,j,1)**2 )

        xy_SurfBulkRiNum(i,j) = Grav / ( xy_SurfTemp(i,j) / xyr_Exner(i,j,0) ) * ( xyz_Temp(i,j,1) / xyz_Exner(i,j,1) - xy_SurfTemp(i,j) / xyr_Exner(i,j,0) ) / max( xy_SurfVelAbs(i,j), VelMinForRi )**2 * ( xyz_Height(i,j,1) - xy_SurfHeight(i,j) )
      end do
    end do


    ! バルク係数算出
    ! Calculate bulk coefficients
    !
    call BulkCoef( xy_SurfBulkRiNum, xy_SurfRoughLength, xy_SurfHeight, xyz_Height, xy_SurfVelBulkCoef, xy_SurfTempBulkCoef )


    ! 輸送係数の計算
    ! Calculate transfer coefficient
    !
    do i = 0, imax-1
      do j = 1, jmax
        xy_SurfVelTransCoef(i,j) = xy_SurfVelBulkCoef(i,j) * xyr_Press(i,j,0) / ( GasRDry * xyr_Temp(i,j,0) ) * min( max( xy_SurfVelAbs(i,j), VelMinForVel ), VelMaxForVel )

        xy_SurfTempTransCoef(i,j) = xy_SurfTempBulkCoef(i,j) * xyr_Press(i,j,0) / ( GasRDry * xyr_Temp(i,j,0) ) * min( max( xy_SurfVelAbs(i,j), VelMinForTemp ), VelMaxForTemp )
      end do
    end do


    ! 地表面フラックスの計算
    ! Calculate fluxes on flux
    !
    xy_UFluxSurf    = - xy_SurfVelTransCoef * xyz_U(:,:,1)
    xy_VFluxSurf    = - xy_SurfVelTransCoef * xyz_V(:,:,1)
!!$    xy_TempFluxSurf =   CpDry * xy_SurfTempTransCoef &
!!$      &                   * (   xy_SurfTemp           &
!!$      &                       - xyz_Temp(:,:,1) / xy_SurfExner )
    xy_TempFluxSurf = - CpDry * xyr_Exner(:,:,0) * xy_SurfTempTransCoef * (   xyz_Temp(:,:,1) / xyz_Exner(:,:,1) - xy_SurfTemp     / xyr_Exner(:,:,0) )

    ! フラックスの計算
    ! Calculate fluxes
    !
    xyr_UFlux(:,:,0)    = xyr_UFlux(:,:,0)    + xy_UFluxSurf
    xyr_VFlux(:,:,0)    = xyr_VFlux(:,:,0)    + xy_VFluxSurf
    xyr_TempFlux(:,:,0) = xyr_TempFlux(:,:,0) + xy_TempFluxSurf

    ! ヒストリデータ出力
    ! History data output
    !

    ! 計算時間計測一時停止
    ! Pause measurement of computation time
    !
    call TimesetClockStop( module_name )

  end subroutine SurfaceFlux

  subroutine SurfaceFluxOutput( xyr_UFlux, xyr_VFlux, xyr_TempFlux, xyz_DUDt, xyz_DVDt, xyz_DTempDt, xy_SurfTemp, xy_DSurfTempDt, xyr_Press, xyz_Exner, xyr_Exner, xy_SurfVelTransCoef, xy_SurfTempTransCoef )
    !
    ! フラックス (xyr_UFlux, xyr_VFlux, xyr_TempFlux)
    ! について, その他の引数を用いて補正し, 出力を行う. 
    !
    ! Fluxes (xyr_UFlux, xyr_VFlux, xyr_TempFlux) are
    ! corrected by using other arguments, and the corrected values are output.
    !

    ! モジュール引用 ; USE statements
    !

    ! 物理定数設定
    ! Physical constants settings
    !
    use constants, only: Grav, GasRDry, CpDry
                              ! $ C_p $ [J kg-1 K-1]. 
                              ! 乾燥大気の定圧比熱. 
                              ! Specific heat of air at constant pressure

    ! 時刻管理
    ! Time control
    !
    use timeset, only: DelTime, TimeN, TimesetClockStart, TimesetClockStop

    ! ヒストリデータ出力
    ! History data output
    !
    use gtool_historyauto, only: HistoryAutoPut

    ! 宣言文 ; Declaration statements
    !
    implicit none
    real(DP), intent(in):: xyr_UFlux (0:imax-1, 1:jmax, 0:kmax)
                              ! 東西風速フラックス. 
                              ! Eastward wind flux
    real(DP), intent(in):: xyr_VFlux (0:imax-1, 1:jmax, 0:kmax)
                              ! 南北風速フラックス. 
                              ! Northward wind flux
    real(DP), intent(in):: xyr_TempFlux (0:imax-1, 1:jmax, 0:kmax)
                              ! 温度フラックス. 
                              ! Temperature flux

    real(DP), intent(in):: xyz_DUDt (0:imax-1, 1:jmax, 1:kmax)
                              ! $ \DP{u}{t} $ . 東西風速変化. 
                              ! Eastward wind tendency
    real(DP), intent(in):: xyz_DVDt (0:imax-1, 1:jmax, 1:kmax)
                              ! $ \DP{v}{t} $ . 南北風速変化. 
                              ! Northward wind tendency
    real(DP), intent(in):: xyz_DTempDt (0:imax-1, 1:jmax, 1:kmax)
                              ! $ \DP{T}{t} $ . 温度変化. 
                              ! Temperature tendency

    real(DP), intent(in):: xy_SurfTemp (0:imax-1, 1:jmax)
                              ! 地表面温度. 
                              ! Surface temperature
    real(DP), intent(in):: xy_DSurfTempDt (0:imax-1, 1:jmax)
                              ! 地表面温度変化率. 
                              ! Surface temperature tendency
    real(DP), intent(in):: xyr_Press (0:imax-1, 1:jmax, 0:kmax)
                              ! $ \hat{p} $ . 気圧 (半整数レベル). 
                              ! Air pressure (half level)
    real(DP), intent(in):: xyz_Exner (0:imax-1, 1:jmax, 1:kmax)
                              ! Exner 関数 (整数レベル). 
                              ! Exner function (full level)
    real(DP), intent(in):: xyr_Exner (0:imax-1, 1:jmax, 0:kmax)
                              ! Exner 関数 (半整数レベル). 
                              ! Exner function (half level)
    real(DP), intent(in):: xy_SurfVelTransCoef (0:imax-1, 1:jmax)
                              ! 輸送係数：運動量. 
                              ! Diffusion coefficient: velocity
    real(DP), intent(in):: xy_SurfTempTransCoef (0:imax-1, 1:jmax)
                              ! 輸送係数：温度. 
                              ! Transfer coefficient: temperature

    ! 出力のための作業変数
    ! Work variables for output
    !
    real(DP):: xyr_UFluxCor (0:imax-1, 1:jmax, 0:kmax)
                              ! 東西風速フラックス. 
                              ! Eastward wind flux
    real(DP):: xyr_VFluxCor (0:imax-1, 1:jmax, 0:kmax)
                              ! 南北風速フラックス. 
                              ! Northward wind flux
    real(DP):: xyr_TempFluxCor (0:imax-1, 1:jmax, 0:kmax)
                              ! 温度フラックス. 
                              ! Temperature flux

    ! 作業変数
    ! Work variables
    !
    integer:: i               ! 経度方向に回る DO ループ用作業変数
                              ! Work variables for DO loop in longitude
    integer:: j               ! 緯度方向に回る DO ループ用作業変数
                              ! Work variables for DO loop in latitude
    integer:: n               ! 組成方向に回る DO ループ用作業変数
                              ! Work variables for DO loop in dimension of constituents


    ! 実行文 ; Executable statement
    !

    ! 計算時間計測開始
    ! Start measurement of computation time
    !
    call TimesetClockStart( module_name )

    ! 初期化
    ! Initialization
    !
    if ( .not. surface_flux_bulk_inited ) call SurfFluxInit


    ! Output of fluxes at t
    !

    ! 風速, 温度, 比湿フラックス補正
    ! Correct fluxes of wind, temperature, specific humidity
    !
    do j = 1, jmax
      do i = 0, imax-1
        xyr_UFluxCor( i,j,0 ) = xyr_UFlux( i,j,0 ) - xy_SurfVelTransCoef( i,j ) * xyz_DUDt( i,j,1 ) * DelTime

        xyr_VFluxCor( i,j,0 ) = xyr_VFlux( i,j,0 ) - xy_SurfVelTransCoef( i,j ) * xyz_DVDt( i,j,1 ) * DelTime

        xyr_TempFluxCor( i,j,0 ) = xyr_TempFlux( i,j,0 ) - CpDry * xyr_Exner( i,j,0 ) * xy_SurfTempTransCoef( i,j ) * ( xyz_DTempDt( i,j,1 ) / xyz_Exner( i,j,1 ) - xy_DSurfTempDt( i,j ) / xyr_Exner( i,j,0 ) ) * DelTime
      end do
    end do

    ! ヒストリデータ出力
    ! History data output
    !
    call HistoryAutoPut( TimeN, 'TauX' , xyr_UFluxCor    (:,:,0) )
    call HistoryAutoPut( TimeN, 'TauY' , xyr_VFluxCor    (:,:,0) )
    call HistoryAutoPut( TimeN, 'Sens' , xyr_TempFluxCor (:,:,0) )


    ! Output of fluxes at t - \Delta t
    !

    ! 風速, 温度, 比湿フラックス補正
    ! Correct fluxes of wind, temperature, specific humidity
    !
    do j = 1, jmax
      do i = 0, imax-1
        xyr_UFluxCor( i,j,0 ) = xyr_UFlux( i,j,0 )
        xyr_VFluxCor( i,j,0 ) = xyr_VFlux( i,j,0 )
        xyr_TempFluxCor( i,j,0 ) = xyr_TempFlux( i,j,0 )
      end do
    end do

    ! ヒストリデータ出力
    ! History data output
    !
    call HistoryAutoPut( TimeN, 'TauXB', xyr_UFluxCor    (:,:,0) )
    call HistoryAutoPut( TimeN, 'TauYB', xyr_VFluxCor    (:,:,0) )
    call HistoryAutoPut( TimeN, 'SensB', xyr_TempFluxCor (:,:,0) )

    ! Output of fluxes at t + \Delta t
    !

    ! 風速, 温度, 比湿フラックス補正
    ! Correct fluxes of wind, temperature, specific humidity
    !
    do j = 1, jmax
      do i = 0, imax-1
        xyr_UFluxCor( i,j,0 ) = xyr_UFlux( i,j,0 ) - xy_SurfVelTransCoef( i,j ) * xyz_DUDt( i,j,1 ) * 2.0d0 * DelTime

        xyr_VFluxCor( i,j,0 ) = xyr_VFlux( i,j,0 ) - xy_SurfVelTransCoef( i,j ) * xyz_DVDt( i,j,1 ) * 2.0d0 * DelTime

        xyr_TempFluxCor( i,j,0 ) = xyr_TempFlux( i,j,0 ) - CpDry * xyr_Exner( i,j,0 ) * xy_SurfTempTransCoef( i,j ) * ( xyz_DTempDt( i,j,1 ) / xyz_Exner( i,j,1 ) - xy_DSurfTempDt( i,j ) / xyr_Exner( i,j,0 ) ) * 2.0d0 * DelTime
      end do
    end do

    ! ヒストリデータ出力
    ! History data output
    !
    call HistoryAutoPut( TimeN, 'TauXA' , xyr_UFluxCor    (:,:,0) )
    call HistoryAutoPut( TimeN, 'TauYA' , xyr_VFluxCor    (:,:,0) )
    call HistoryAutoPut( TimeN, 'SensA' , xyr_TempFluxCor (:,:,0) )


    ! 計算時間計測一時停止
    ! Pause measurement of computation time
    !
    call TimesetClockStop( module_name )

  end subroutine SurfaceFluxOutput

  subroutine BulkCoef( xy_SurfBulkRiNum, xy_SurfRoughLength, xy_SurfHeight, xyz_Height, xy_SurfVelBulkCoef, xy_SurfTempBulkCoef )
    !
    ! バルク係数を算出します.
    !
    ! Bulk coefficients are calculated.
    !

    ! モジュール引用 ; USE statements
    !

    ! 物理定数設定
    ! Physical constants settings
    !
    use constants, only: FKarm                 ! $ k $ .
                              ! カルマン定数. 
                              ! Karman constant

    ! 宣言文 ; Declaration statements
    !
    implicit none
    real(DP), intent(in):: xy_SurfBulkRiNum (0:imax-1, 1:jmax)
                              ! バルク $ R_i $ 数. 
                              ! Bulk $ R_i $ number

!!$    real(DP), intent(in):: xy_SurfVelAbs (0:imax-1, 1:jmax)
!!$                              ! 風速絶対値. 
!!$                              ! Absolute velocity
    real(DP), intent(in):: xy_SurfRoughLength (0:imax-1, 1:jmax)
                              ! 地表粗度長
                              ! Surface rough length
    real(DP), intent(in):: xy_SurfHeight(0:imax-1,1:jmax)
                              ! $ z_s $ . 地表面高度. 
                              ! Surface height. 
    real(DP), intent(in):: xyz_Height (0:imax-1, 1:jmax, 1:kmax)
                              ! 高度. 
                              ! Height
    real(DP), intent(out):: xy_SurfVelBulkCoef (0:imax-1, 1:jmax)
                              ! バルク係数：運動量. 
                              ! Bulk coefficient: temperature
    real(DP), intent(out):: xy_SurfTempBulkCoef (0:imax-1, 1:jmax)
                              ! バルク係数：温度. 
                              ! Bulk coefficient: temperature

    ! 作業変数
    ! Work variables
    !
    real(DP) :: xy_SurfBulkCoefInNeutCond    (0:imax-1, 1:jmax)

    integer:: i               ! 経度方向に回る DO ループ用作業変数
                              ! Work variables for DO loop in longitude
    integer:: j               ! 緯度方向に回る DO ループ用作業変数
                              ! Work variables for DO loop in latitude

    ! 実行文 ; Executable statement
    !

    if ( FlagConstBulkCoef ) then

      ! Use of constant bulk coefficient
      !

      xy_SurfVelBulkCoef  = ConstBulkCoef
      xy_SurfTempBulkCoef = ConstBulkCoef

    else

      ! Parameterization by Louis et al. (1981)
      !

      ! 中立バルク係数の計算
      ! Calculate bulk coefficient in neutral condition
      !
      xy_SurfBulkCoefInNeutCond  = ( FKarm / log ( ( xyz_Height(:,:,1) - xy_SurfHeight ) / xy_SurfRoughLength ) )**2

      if ( FlagUseOfBulkCoefInNeutralCond ) then

        ! 中立条件でのバルク係数の設定
        ! Set bulk coefficient in neutral condition
        !

        xy_SurfVelBulkCoef  = xy_SurfBulkCoefInNeutCond
        xy_SurfTempBulkCoef = xy_SurfBulkCoefInNeutCond

      else

        ! 非中立条件でのバルク係数の計算
        ! Calculate bulk coefficients in non-neutral condition
        !

        do j = 1, jmax
          do i = 0, imax-1

            if ( xy_SurfBulkRiNum(i,j) > 0.0_DP ) then 

              xy_SurfVelBulkCoef(i,j) = xy_SurfBulkCoefInNeutCond(i,j) / (   1.0_DP + 10.0_DP * xy_SurfBulkRiNum(i,j) / sqrt( 1.0_DP + 5.0_DP * xy_SurfBulkRiNum(i,j) ) )

              xy_SurfTempBulkCoef(i,j) = xy_SurfBulkCoefInNeutCond(i,j) / (   1.0_DP + 15.0_DP * xy_SurfBulkRiNum(i,j) * sqrt( 1.0_DP + 5.0_DP * xy_SurfBulkRiNum(i,j) ) )

            else

              xy_SurfVelBulkCoef(i,j) = xy_SurfBulkCoefInNeutCond(i,j) * (   1.0_DP - 10.0_DP * xy_SurfBulkRiNum(i,j) / (   1.0_DP + 75.0_DP * xy_SurfBulkCoefInNeutCond(i,j) * sqrt( - ( xyz_Height(i,j,1) - xy_SurfHeight(i,j) ) / xy_SurfRoughLength(i,j) * xy_SurfBulkRiNum(i,j) ) ) )

              xy_SurfTempBulkCoef(i,j) = xy_SurfBulkCoefInNeutCond(i,j) * (   1.0_DP - 15.0_DP * xy_SurfBulkRiNum(i,j) / (   1.0_DP + 75.0_DP * xy_SurfBulkCoefInNeutCond(i,j) * sqrt( - ( xyz_Height(i,j,1) - xy_SurfHeight(i,j) ) / xy_SurfRoughLength(i,j) * xy_SurfBulkRiNum(i,j) ) ) )

            end if
          end do
        end do

      end if

    end if


    ! 最大/最小 判定
    ! Measure maximum/minimum
    !
    do i = 0, imax-1
      do j = 1, jmax

        xy_SurfVelBulkCoef(i,j)  = max( min( xy_SurfVelBulkCoef(i,j), VelBulkCoefMax ), VelBulkCoefMin )

        xy_SurfTempBulkCoef(i,j) = max( min( xy_SurfTempBulkCoef(i,j), TempBulkCoefMax ), TempBulkCoefMin )

      end do
    end do


  end subroutine BulkCoef

  subroutine InitCheck
    !
    ! 依存モジュールの初期化チェック
    !
    ! Check initialization of dependency modules

    ! 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_util_inited

    ! 格子点設定
    ! Grid points settings
    !
    use gridset, only: gridset_inited

    ! 物理定数設定
    ! Physical constants settings
    !
    use constants, only: constants_inited

    ! 座標データ設定
    ! Axes data settings
    !
    use axesset, only: axesset_inited

    ! 時刻管理
    ! Time control
    !
    use timeset, only: timeset_inited

    ! 実行文 ; Executable statement
    !

    if ( .not. namelist_util_inited ) call MessageNotify( 'E', module_name, '"namelist_util" module is not initialized.' )

    if ( .not. gridset_inited ) call MessageNotify( 'E', module_name, '"gridset" module is not initialized.' )

    if ( .not. constants_inited ) call MessageNotify( 'E', module_name, '"constants" module is not initialized.' )

    if ( .not. axesset_inited ) call MessageNotify( 'E', module_name, '"axesset" module is not initialized.' )

    if ( .not. timeset_inited ) call MessageNotify( 'E', module_name, '"timeset" module is not initialized.' )

  end subroutine InitCheck

  subroutine SurfFluxInit
    !
    ! surface_flux_bulk モジュールの初期化を行います. 
    ! NAMELIST#surface_flux_bulk_nml の読み込みはこの手続きで行われます. 
    !
    ! "surface_flux_bulk" module is initialized. 
    ! "NAMELIST#surface_flux_bulk_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

    ! ヒストリデータ出力
    ! History data output
    !
    use gtool_historyauto, only: HistoryAutoAddVariable

    ! 宣言文 ; Declaration statements
    !
    implicit none

    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 /surface_flux_bulk_nml/ FlagConstBulkCoef, FlagUseOfBulkCoefInNeutralCond, ConstBulkCoef, VelMinForRi, VelMinForVel, VelMinForTemp, VelMaxForVel, VelMaxForTemp, VelBulkCoefMin, TempBulkCoefMin  , VelBulkCoefMax, TempBulkCoefMax
          !
          ! デフォルト値については初期化手続 "surface_flux_bulk#SurfFluxInit" 
          ! のソースコードを参照のこと. 
          !
          ! Refer to source codes in the initialization procedure
          ! "surface_flux_bulk#SurfFluxInit" for the default values. 
          !

    ! 実行文 ; Executable statement
    !

    if ( surface_flux_bulk_inited ) return
    call InitCheck

    ! デフォルト値の設定
    ! Default values settings
    !
    FlagConstBulkCoef              = .false.
    FlagUseOfBulkCoefInNeutralCond = .false.
    ConstBulkCoef                  =  0.0_DP

    VelMinForRi   = 0.01_DP
    VelMinForVel  = 0.01_DP
    VelMinForTemp = 0.01_DP
    VelMaxForVel  = 1000.0_DP
    VelMaxForTemp = 1000.0_DP


    VelBulkCoefMin  =  0.0_DP
    TempBulkCoefMin =  0.0_DP
    VelBulkCoefMax  =  1.0_DP
    TempBulkCoefMax =  1.0_DP

    ! NAMELIST の読み込み
    ! NAMELIST is input
    !
    if ( trim(namelist_filename) /= '' ) then
      call FileOpen( unit_nml, namelist_filename, mode = 'r' ) ! (in)

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

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

    ! ヒストリデータ出力のためのへの変数登録
    ! Register of variables for history data output
    !
    call HistoryAutoAddVariable( 'TauX', (/ 'lon ', 'lat ', 'time' /), 'surface stress(x)  ', 'N m-2' )

    call HistoryAutoAddVariable( 'TauY', (/ 'lon ', 'lat ', 'time' /), 'surface stress(y)  ', 'N m-2' )

    call HistoryAutoAddVariable( 'Sens', (/ 'lon ', 'lat ', 'time' /), 'sensible heat flux', 'W m-2' )

    call HistoryAutoAddVariable( 'TauXB', (/ 'lon ', 'lat ', 'time' /), 'surface stress(x)  ', 'N m-2' )

    call HistoryAutoAddVariable( 'TauYB', (/ 'lon ', 'lat ', 'time' /), 'surface stress(y)  ', 'N m-2' )

    call HistoryAutoAddVariable( 'SensB', (/ 'lon ', 'lat ', 'time' /), 'sensible heat flux', 'W m-2' )

    call HistoryAutoAddVariable( 'TauXA', (/ 'lon ', 'lat ', 'time' /), 'surface stress(x)  ', 'N m-2' )

    call HistoryAutoAddVariable( 'TauYA', (/ 'lon ', 'lat ', 'time' /), 'surface stress(y)  ', 'N m-2' )

    call HistoryAutoAddVariable( 'SensA', (/ 'lon ', 'lat ', 'time' /), 'sensible heat flux', 'W m-2' )

    ! 印字 ; Print
    !
    call MessageNotify( 'M', module_name, '----- Initialization Messages -----' )

    call MessageNotify( 'M', module_name, '  VelMinForRi       = %f', d = (/ VelMinForRi   /) )
    call MessageNotify( 'M', module_name, '  VelMinForVel      = %f', d = (/ VelMinForVel  /) )
    call MessageNotify( 'M', module_name, '  VelMinForTemp     = %f', d = (/ VelMinForTemp /) )
    call MessageNotify( 'M', module_name, '  VelMaxForVel      = %f', d = (/ VelMaxForVel  /) )
    call MessageNotify( 'M', module_name, '  VelMaxForTemp     = %f', d = (/ VelMaxForTemp /) )
    call MessageNotify( 'M', module_name, 'Bulk coefficients:' )
    call MessageNotify( 'M', module_name, '  FlagConstBulkCoef              = %b', l = (/ FlagConstBulkCoef /) )
    call MessageNotify( 'M', module_name, '  FlagUseOfBulkCoefInNeutralCond = %b', l = (/ FlagUseOfBulkCoefInNeutralCond /) )
    call MessageNotify( 'M', module_name, '  ConstBulkCoef   = %f', d = (/ ConstBulkCoef   /) )
    call MessageNotify( 'M', module_name, '  VelBulkCoefMin  = %f', d = (/ VelBulkCoefMin  /) )
    call MessageNotify( 'M', module_name, '  TempBulkCoefMin = %f', d = (/ TempBulkCoefMin /) )
    call MessageNotify( 'M', module_name, '  VelBulkCoefMax  = %f', d = (/ VelBulkCoefMax  /) )
    call MessageNotify( 'M', module_name, '  TempBulkCoefMax = %f', d = (/ TempBulkCoefMax /) )

    surface_flux_bulk_inited = .true.
  end subroutine SurfFluxInit