| Class | saturate_nha1992 |
| In: |
saturate/saturate_nha1992.F90
|
Note that Japanese and English are described in parallel.
Nakajima et al. (1992) で用いられた飽和蒸気圧 $ p^{*} $ に関する以下の式 を用い, 飽和比湿および飽和比湿の温度微分の値を算出します.
Saturation specific humidity and temperature derivative of it are calculated with a folloing formula for saturation watar vapor pressure $ p^{*} $ in Nakajima et al. (1992).
\[
p^{*} (T) = p_0^{*} \exp \left( - \frac{l}{RT} \right).
\]
ここで, $ T $ は温度, $ R $ は普遍気体定数です. $ R $ および潜熱 $ l $ , 水蒸気飽和曲線の定数 $ p_0^{*} $ は以下のように与えられます.
where $ T $ is temperature, $ R $ is the gas constant. $ R $ and latent heat $ l $ , constant for the water vapor saturation curve $ p_0^{*} $ are as follows.
飽和水蒸気圧から飽和比湿 $ q^{*} $ を求める際には, 以下の式を用います.
Saturation specific humidity $ q^{*} $ is calculated from saturation watar vapor pressure as follows.
\[
q^{*} (T, p) = \varepsilon \frac{p^{*} (T)}{p}
\]
ここで $ varepsilon $ は凝結成分と大気の分子量比, $ p $ は気圧です.
where $ varepsilon $ is molecular weight ratio of water vapor to air, $ p $ is air pressure.
従って, 飽和比湿, 飽和比湿の温度変化を求める式は以下のように なります.
Therefore, saturation specific humidity and temperature derivative of it are calculated as follows.
\[
q^{*} (T, p) = \varepsilon \frac{p_0^{*}}{p} \exp \left( - \frac{l}{RT} \right), \] \[
\DP{q^{*} (T, p)}{T} = \varepsilon \frac{p_0^{*}}{p} \frac{l}{RT^2} \exp \left( - \frac{l}{RT} \right)
= q^{*} \frac{l}{RT^2}
\]
| CalcQVapSat : | 飽和比湿の計算 |
| CalcDQVapSatDTemp : | 飽和比湿の温度微分の計算 |
| ———— : | ———— |
| CalcQVapSat : | Calculate saturation specific humidity |
| CalcDQVapSatDTemp : | Calculate temperature derivative of saturation specific humidity |
| Function : | |||
| DQVapSatDTemp : | real(DP)
| ||
| Temp : | real(DP), intent(in)
| ||
| QVapSat : | real(DP), intent(in)
|
温度 Temp と飽和比湿 QVapSat を用い, 飽和比湿の温度微分 DQVapSatDTemp を求めます.
Calculate temperature derivative of saturation specific humidity DQVapSatDTemp using temperature Temp and saturation specific humidity QVapSat.
function CalcDQVapSatDTemp( Temp, QVapSat ) result( DQVapSatDTemp )
!
! 温度 *Temp* と飽和比湿 *QVapSat* を用い,
! 飽和比湿の温度微分 *DQVapSatDTemp* を求めます.
!
! Calculate temperature derivative of saturation specific humidity
! *DQVapSatDTemp* using
! temperature *Temp* and saturation specific humidity *QVapSat*.
!
! モジュール引用 ; USE statements
!
! 物理定数設定
! Physical constants settings
!
use constants, only: GasRUniv, EpsV ! $ \epsilon_v $ .
! 水蒸気分子量比.
! Molecular weight of water vapor
! 宣言文 ; Declaration statements
!
implicit none
real(DP), intent(in):: Temp
! $ T $ . 温度. Temperature
real(DP), intent(in):: QVapSat
! $ q^{*} $ . 飽和比湿. Saturation specific humidity
real(DP):: DQVapSatDTemp
! $ \DP{q^{*}}{T} $ . 飽和比湿の温度微分.
! Temperature derivative of saturation specific humidity.
! 作業変数
! Work variables
!
! 飽和比湿計算のための文関数定義 (CalcQVapSatSF, CalcDQVapSatDTempSF)
! Declaration of statement function for
! calculation of saturation specific humidity
! ("CalcQVapSatSF", "CalcDQVapSatDTempSF")
!
#include "../saturate/saturate_nha1992_sf.f90"
EpsVSF = EpsV
GasRUnivSF = GasRUniv
! 実行文 ; Executable statement
!
! 飽和比湿の温度微分の計算
! Calculate temperature derivative of saturation specific humidity
!
! CalcDQVapSatDTempSF は文関数. (実行文の直前で定義)
! "CalcDQVapSatDTempSF" is statement function and
! is declared just before executable statement.
!
DQVapSatDTemp = CalcDQVapSatDTempSF( Temp, QVapSat )
end function CalcDQVapSatDTemp
| Function : | |||
| QVapSat : | real(DP)
| ||
| Temp : | real(DP), intent(in)
| ||
| Press : | real(DP), intent(in)
|
温度 Temp と気圧 Press を用い, 飽和比湿 QVapSat を求めます.
Calculate saturation specific humidity QVapSat using temperature Temp and air pressure Press.
function CalcQVapSat( Temp, Press ) result( QVapSat )
!
! 温度 *Temp* と気圧 *Press* を用い,
! 飽和比湿 *QVapSat* を求めます.
!
! Calculate saturation specific humidity *QVapSat* using
! temperature *Temp* and air pressure *Press*.
!
! モジュール引用 ; USE statements
!
! 物理定数設定
! Physical constants settings
!
use constants, only: GasRUniv, EpsV ! $ \epsilon_v $ .
! 水蒸気分子量比.
! Molecular weight of water vapor
! 宣言文 ; Declaration statements
!
implicit none
real(DP), intent(in):: Temp
! $ T $ . 温度. Temperature
real(DP), intent(in):: Press
! $ p $ . 気圧. Air pressure
real(DP):: QVapSat
! $ q^{*} $ . 飽和比湿. Saturation specific humidity
! 作業変数
! Work variables
!
! 飽和比湿計算のための文関数定義 (CalcQVapSatSF, CalcDQVapSatDTempSF)
! Declaration of statement function for
! calculation of saturation specific humidity
! ("CalcQVapSatSF", "CalcDQVapSatDTempSF")
!
#include "../saturate/saturate_nha1992_sf.f90"
EpsVSF = EpsV
GasRUnivSF = GasRUniv
! 実行文 ; Executable statement
!
! 飽和比湿の計算
! Calculate saturation specific humidity
!
! CalcQVapSatSF は文関数. (実行文の直前で定義)
! "CalcQVapSatSF" is statement function and
! is declared just before executable statement.
!
QVapSat = CalcQVapSatSF( Temp, Press )
end function CalcQVapSat
| Variable : | |||
| saturate_nha1992_inited = .false. : | logical, save, public
|
| Subroutine : |
依存モジュールの初期化チェック
Check initialization of dependency modules
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
!
! 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
! 実行文 ; Executable statement
!
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.' )
end subroutine InitCheck
| Subroutine : |
saturate_nha1992 モジュールの初期化を行います.
"saturate_nha1992" module is initialized.
subroutine SaturateInit
!
! saturate_nha1992 モジュールの初期化を行います.
!
!
! "saturate_nha1992" module is initialized.
!
! 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
! 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 /saturate_nha1992_nml/
!
! デフォルト値については初期化手続 "saturate_nha1992#SaturateInit"
! のソースコードを参照のこと.
!
! Refer to source codes in the initialization procedure
! "saturate_nha1992#SaturateInit" for the default values.
!
! 実行文 ; Executable statement
!
if ( saturate_nha1992_inited ) return
call InitCheck
! 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_nha1992_nml, & ! (out)
!!$ & iostat = iostat_nml ) ! (out)
!!$ close( unit_nml )
!!$
!!$ call NmlutilMsg( iostat_nml, module_name ) ! (in)
!!$ end if
! 印字 ; Print
!
call MessageNotify( 'M', module_name, '----- Initialization Messages -----' )
call MessageNotify( 'M', module_name, '-- version = %c', c1 = trim(version) )
saturate_nha1992_inited = .true.
end subroutine SaturateInit
| Constant : | |||
| module_name = ‘saturate_nha1992‘ : | character(*), parameter
|
| Constant : | |||
| version = ’$Name: dcpam5-20100224 $’ // ’$Id: saturate_nha1992.F90,v 1.2 2008-11-23 15:08:26 morikawa Exp $’ : | character(*), parameter
|