source: CONFIG/publications/ICOLMDZORINCA_CO2_Transport_GMD_2023/INCA/build/ppsrc/INCA_SRC/bl_for_dms.f90 @ 6610

!$Id: bl_for_dms.F90 163 2010-02-22 15:41:45Z acosce $
!! =========================================================================
!! INCA - INteraction with Chemistry and Aerosols
!! 
!! Copyright Laboratoire des Sciences du Climat et de l'Environnement (LSCE)
!!           Unite mixte CEA-CNRS-UVSQ
!! 
!! Contributors to this INCA subroutine:
!! 
!! E. Cosme
!! 
!! Anne Cozic, LSCE, anne.cozic@cea.fr
!! Yann Meurdesoif, LSCE, yann.meurdesoif@cea.fr
!!
!! This software is a computer program whose purpose is to simulate the 
!! atmospheric gas phase and aerosol composition. The model is designed to be
!! used within a transport model or a general circulation model. This version 
!! of INCA was designed to be coupled to the LMDz GCM. LMDz-INCA accounts
!! for emissions, transport (resolved and sub-grid scale), photochemical 
!! transformations, and scavenging (dry deposition and washout) of chemical 
!! species and aerosols interactively in the GCM. Several versions of the INCA
!! model are currently used depending on the envisaged applications with the 
!! chemistry-climate model. 
!! 
!! This software is governed by the CeCILL  license under French law and
!! abiding by the rules of distribution of free software.  You can  use, 
!! modify and/ or redistribute the software under the terms of the CeCILL
!! license as circulated by CEA, CNRS and INRIA at the following URL
!! "http://www.cecill.info". 
!! 
!! As a counterpart to the access to the source code and  rights to copy,
!! modify and redistribute granted by the license, users are provided only
!! with a limited warranty  and the software's author,  the holder of the
!! economic rights,  and the successive licensors  have only  limited
!! liability. 
!! 
!! In this respect, the user's attention is drawn to the risks associated
!! with loading,  using,  modifying and/or developing or reproducing the
!! software by the user in light of its specific status of free software,
!! that may mean  that it is complicated to manipulate,  and  that  also
!! therefore means  that it is reserved for developers  and  experienced
!! professionals having in-depth computer knowledge. Users are therefore
!! encouraged to load and test the software's suitability as regards their
!! requirements in conditions enabling the security of their systems and/or 
!! data to be ensured and,  more generally, to use and operate it in the 
!! same conditions as regards security. 
!! 
!! The fact that you are presently reading this means that you have had
!! knowledge of the CeCILL license and that you accept its terms.
!! =========================================================================


SUBROUTINE bl_for_dms(u,v,paprs,pplay,cdragh,cdragm &
     ,t,q,tsol,ustar,obklen)

  USE INCA_DIM
  USE PRINT_INCA
  IMPLICIT NONE

  !===================================================================
  ! Auteur : E. Cosme 
  ! Calcul de la vitesse de friction (ustar) et de la longueur de 
  ! Monin-Obukhov (obklen), necessaires pour calculer les flux de DMS
  ! par la methode de Nightingale.
  ! Cette subroutine est plus que fortement inspiree de la subroutine
  ! 'nonlocal' dans clmain.F .
  ! reference :  Holtslag, A.A.M., and B.A. Boville, 1993:
  ! Local versus nonlocal boundary-layer diffusion in a global climate
  ! model. J. of Climate, vol. 6, 1825-1842. (a confirmer)
  ! 31 08 01
  !===================================================================
  !
!
! $Header$
!
!  ATTENTION!!!!: ce fichier include est compatible format fixe/format libre
!                 veillez à n'utiliser que des ! pour les commentaires
!                 et à bien positionner les & des lignes de continuation
!                 (les placer en colonne 6 et en colonne 73)
!
!
! A1.0 Fundamental constants
      REAL RPI,RCLUM,RHPLA,RKBOL,RNAVO
! A1.1 Astronomical constants
      REAL RDAY,REA,REPSM,RSIYEA,RSIDAY,ROMEGA
! A1.1.bis Constantes concernant l'orbite de la Terre:
      REAL R_ecc, R_peri, R_incl
! A1.2 Geoide
      REAL RA,RG,R1SA
! A1.3 Radiation
!     REAL RSIGMA,RI0
      REAL RSIGMA
! A1.4 Thermodynamic gas phase
      REAL R,RMD,RMO3,RMV,RD,RV,RCPD,RCPV,RCVD,RCVV
      REAL RKAPPA,RETV
! A1.5,6 Thermodynamic liquid,solid phases
      REAL RCW,RCS
! A1.7 Thermodynamic transition of phase
      REAL RLVTT,RLSTT,RLMLT,RTT,RATM
! A1.8 Curve of saturation
      REAL RESTT,RALPW,RBETW,RGAMW,RALPS,RBETS,RGAMS
      REAL RALPD,RBETD,RGAMD
!
      COMMON/YOMCST_I/RPI   ,RCLUM ,RHPLA ,RKBOL ,RNAVO                   &
     &      ,RDAY  ,REA   ,REPSM ,RSIYEA,RSIDAY,ROMEGA                  &
     &      ,R_ecc, R_peri, R_incl                                      &
     &      ,RA    ,RG    ,R1SA                                         &
     &      ,RSIGMA                                                     &
     &      ,R     ,RMD   ,RMO3  ,RMV   ,RD    ,RV    ,RCPD             &
     &      ,RCPV  ,RCVD  ,RCVV  ,RKAPPA,RETV                           &
     &      ,RCW   ,RCS                                                 &
     &      ,RLVTT ,RLSTT ,RLMLT ,RTT   ,RATM                           &
     &      ,RESTT ,RALPW ,RBETW ,RGAMW ,RALPS ,RBETS ,RGAMS            &
     &      ,RALPD ,RBETD ,RGAMD
!    ------------------------------------------------------------------
!$OMP THREADPRIVATE(/YOMCST_I/)
!
! $Header$
!
!  ATTENTION!!!!: ce fichier include est compatible format fixe/format libre
!                 veillez  n'utiliser que des ! pour les commentaires
!                 et  bien positionner les & des lignes de continuation
!                 (les placer en colonne 6 et en colonne 73)
!
!*    COMMON *YOETHF* DERIVED CONSTANTS SPECIFIC TO ECMWF THERMODYNAMICS
!
!     *R__ES*   *CONSTANTS USED FOR COMPUTATION OF SATURATION
!                MIXING RATIO OVER LIQUID WATER(*R_LES*) OR
!                ICE(*R_IES*).
!     *RVTMP2*  *RVTMP2=RCPV/RCPD-1.
!     *RHOH2O*  *DENSITY OF LIQUID WATER.   (RATM/100.)
!
      REAL R2ES, R3LES, R3IES, R4LES, R4IES, R5LES, R5IES
      REAL RVTMP2, RHOH2O
      COMMON /YOETHF_I/R2ES, R3LES, R3IES, R4LES, R4IES, R5LES, R5IES,    &
     &               RVTMP2, RHOH2O
!$OMP THREADPRIVATE(/YOETHF_I/)
!
! $Header$
!
!
!  ATTENTION!!!!: ce fichier include est compatible format fixe/format libre
!                 veillez  n'utiliser que des ! pour les commentaires
!                 et  bien positionner les & des lignes de continuation
!                 (les placer en colonne 6 et en colonne 73)
!
!     ------------------------------------------------------------------
!     This COMDECK includes the Thermodynamical functions for the cy39
!       ECMWF Physics package.
!       Consistent with YOMCST Basic physics constants, assuming the
!       partial pressure of water vapour is given by a first order
!       Taylor expansion of Qs(T) w.r.t. to Temperature, using constants
!       in YOETHF
!     ------------------------------------------------------------------
      REAL PTARG, PDELARG
      REAL FOEEW
!
      FOEEW ( PTARG,PDELARG ) = EXP (                                   &
     &          (R3LES*(1.-PDELARG)+R3IES*PDELARG) * (PTARG-RTT)        &
     & / (PTARG-(R4LES*(1.-PDELARG)+R4IES*PDELARG)) )
!


  ! Arguments :
  REAL u(PLON,PLEV)          ! vent zonal
  REAL v(PLON,PLEV)          ! vent meridien
  REAL paprs(PLON,PLEV+1)    ! niveaux de pression aux intercouches (Pa)
  REAL pplay(PLON,PLEV)      ! niveaux de pression aux milieux... (Pa)
  REAL cdragh(PLON)          ! coefficient de trainee pour la chaleur
  REAL cdragm(PLON)          ! coefficient de trainee pour le vent
  REAL t(PLON,PLEV)          ! temperature
  REAL q(PLON,PLEV)          ! humidite kg/kg
  REAL tsol(PLON)            ! temperature du sol
  REAL ustar(PLON)           ! vitesse de friction
  REAL obklen(PLON)          ! longueur de Monin-Obukhov

  ! Locales :
  REAL vk
  PARAMETER (vk=0.35)
  REAL beta  ! coefficient d'evaporation reelle (/evapotranspiration)
  ! entre 0 et 1, mais 1 au-dessus de la mer
  PARAMETER (beta=1.)
  INTEGER i,k
  REAL zxt, zxu, zxv, zxq, zxqs, zxmod, taux, tauy
  REAL zcor, zdelta, zcvm5
  REAL z(PLON,1)
  REAL khfs(PLON)       ! surface kinematic heat flux [mK/s]
  REAL kqfs(PLON)       ! sfc kinematic constituent flux [m/s]
  REAL heatv(PLON)      ! surface virtual heat flux
  !
  !======================================================================
  !
  ! Calculer les hauteurs de chaque couche
  !
  DO i = 1, PLON
     z(i,1) = RD * t(i,1) / (0.5*(paprs(i,1)+pplay(i,1))) &
          * (paprs(i,1)-pplay(i,1)) / RG
  ENDDO


  DO i = 1, PLON
     !
     zdelta=MAX(0.,SIGN(1.,RTT-tsol(i)))
     zcvm5 = R5LES*RLVTT*(1.-zdelta) + R5IES*RLSTT*zdelta
     zcvm5 = zcvm5 / RCPD / (1.0+RVTMP2*q(i,1))
     zxqs= R2ES * FOEEW(tsol(i),zdelta)/paprs(i,1)
     zxqs=MIN(0.5,zxqs)
     zcor=1./(1.-RETV*zxqs)
     zxqs=zxqs*zcor

     zxt = (t(i,1)+z(i,1)*RG/RCPD/(1.+RVTMP2*q(i,1))) &
          *(1.+RETV*q(i,1))

     zxu = u(i,1)
     zxv = v(i,1)
     zxq = q(i,1)
     zxmod = 1.0+SQRT(zxu**2+zxv**2)
     khfs(i) = (tsol(i)*(1.+RETV*q(i,1))-zxt) *zxmod*cdragh(i)
     kqfs(i) = (zxqs-zxq) *zxmod*cdragh(i) * beta
     heatv(i) = khfs(i) + 0.61*zxt*kqfs(i)
     taux = zxu *zxmod*cdragm(i)
     tauy = zxv *zxmod*cdragm(i)

     ustar(i) = SQRT(taux**2+tauy**2)
     ustar(i) = MAX(SQRT(ustar(i)),0.01)

  ENDDO

  DO i = 1, PLON
     obklen(i) = -t(i,1)*ustar(i)**3/(RG*vk*heatv(i))
  ENDDO

END SUBROUTINE bl_for_dms