MODULE climb_hq_mod

! Module to solve the verctical diffusion of "q" and "H"; 
! specific humidity and potential energi.

  USE dimphy
#ifdef ISO
  USE infotrac_phy, ONLY: ntraciso=>ntiso ! ajout C Risi pour isos      
#endif

  IMPLICIT NONE; PRIVATE
  PUBLIC :: climb_hq_down, climb_hq_up, d_h_col_vdf, f_h_bnd

  REAL, DIMENSION(:,:), ALLOCATABLE :: gamaq, gamah
  !$OMP THREADPRIVATE(gamaq,gamah)
  REAL, DIMENSION(:,:), ALLOCATABLE :: Ccoef_Q, Dcoef_Q
  !$OMP THREADPRIVATE(Ccoef_Q, Dcoef_Q)
  REAL, DIMENSION(:,:), ALLOCATABLE :: Ccoef_H, Dcoef_H
  !$OMP THREADPRIVATE(Ccoef_H, Dcoef_H)
  REAL, DIMENSION(:), ALLOCATABLE   :: Acoef_Q, Bcoef_Q
  !$OMP THREADPRIVATE(Acoef_Q, Bcoef_Q)
  REAL, DIMENSION(:), ALLOCATABLE   :: Acoef_H, Bcoef_H
  !$OMP THREADPRIVATE(Acoef_H, Bcoef_H)
  REAL, DIMENSION(:,:), ALLOCATABLE :: Kcoefhq
  !$OMP THREADPRIVATE(Kcoefhq)
  REAL, SAVE, DIMENSION(:,:), ALLOCATABLE :: h_old ! for diagnostics, h before solving diffusion
  !$OMP THREADPRIVATE(h_old)
  REAL, SAVE, DIMENSION(:), ALLOCATABLE :: d_h_col_vdf ! for diagnostics, vertical integral of enthalpy change
  !$OMP THREADPRIVATE(d_h_col_vdf)
  REAL, SAVE, DIMENSION(:), ALLOCATABLE :: f_h_bnd ! for diagnostics, enthalpy flux at surface
  !$OMP THREADPRIVATE(f_h_bnd)
#ifdef ISO
  REAL, DIMENSION(:,:,:), ALLOCATABLE :: gamaxt
  !$OMP THREADPRIVATE(gamaxt)
  REAL, DIMENSION(:,:,:), ALLOCATABLE :: Ccoef_XT, Dcoef_XT
  !$OMP THREADPRIVATE(Ccoef_XT, Dcoef_XT)
  REAL, DIMENSION(:,:), ALLOCATABLE   :: Acoef_XT, Bcoef_XT
  !$OMP THREADPRIVATE(Acoef_XT, Bcoef_XT)
#endif

CONTAINS

!****************************************************************************************

  SUBROUTINE climb_hq_down(knon, coefhq, paprs, pplay, &
       delp, temp, q, dtime, &
!!! nrlmd le 02/05/2011
       Ccoef_H_out, Ccoef_Q_out, Dcoef_H_out, Dcoef_Q_out, &
       Kcoef_hq_out, gama_q_out, gama_h_out, &
!!!
       Acoef_H_out, Acoef_Q_out, Bcoef_H_out, Bcoef_Q_out &
#ifdef ISO
            ,xt,  &
       Ccoef_XT_out,Dcoef_XT_out,gama_xt_out,  &
       Acoef_XT_out, Bcoef_XT_out & 
#endif               
            )
  USE lmdz_compbl, ONLY: iflag_pbl, iflag_pbl_split, iflag_order2_sollw, ifl_pbltree
  USE lmdz_yomcst
#ifdef ISOVERIF
USE isotopes_mod, ONLY: iso_eau,iso_HDO
!USE isotopes_verif_mod, ONLY: errmax, errmaxrel
USE isotopes_verif_mod
#endif

! This routine calculates recursivly the coefficients C and D
! for the quantity X=[Q,H] in equation X(k) = C(k) + D(k)*X(k-1), where k is
! the index of the vertical layer.

! Input arguments
!****************************************************************************************
    INTEGER, INTENT(IN)                      :: knon
    REAL, DIMENSION(klon,klev), INTENT(IN)   :: coefhq
    REAL, DIMENSION(klon,klev), INTENT(IN)   :: pplay 
    REAL, DIMENSION(klon,klev+1), INTENT(IN) :: paprs 
    REAL, DIMENSION(klon,klev), INTENT(IN)   :: temp, delp  ! temperature
    REAL, DIMENSION(klon,klev), INTENT(IN)   :: q
    REAL, INTENT(IN)                         :: dtime
#ifdef ISO
    REAL, DIMENSION(ntraciso,klon,klev), INTENT(IN)   :: xt
#endif


! Output arguments
!****************************************************************************************
    REAL, DIMENSION(klon), INTENT(OUT)       :: Acoef_H_out
    REAL, DIMENSION(klon), INTENT(OUT)       :: Acoef_Q_out
    REAL, DIMENSION(klon), INTENT(OUT)       :: Bcoef_H_out
    REAL, DIMENSION(klon), INTENT(OUT)       :: Bcoef_Q_out
#ifdef ISO
    REAL, DIMENSION(ntraciso,klon), INTENT(OUT)       :: Acoef_XT_out
    REAL, DIMENSION(ntraciso,klon), INTENT(OUT)       :: Bcoef_XT_out
#endif

!!! nrlmd le 02/05/2011
    REAL, DIMENSION(klon,klev), INTENT(OUT)  :: Ccoef_H_out
    REAL, DIMENSION(klon,klev), INTENT(OUT)  :: Ccoef_Q_out
    REAL, DIMENSION(klon,klev), INTENT(OUT)  :: Dcoef_H_out
    REAL, DIMENSION(klon,klev), INTENT(OUT)  :: Dcoef_Q_out
    REAL, DIMENSION(klon,klev), INTENT(OUT)  :: Kcoef_hq_out
    REAL, DIMENSION(klon,klev), INTENT(OUT)  :: gama_q_out
    REAL, DIMENSION(klon,klev), INTENT(OUT)  :: gama_h_out
#ifdef ISO
    REAL, DIMENSION(ntraciso,klon,klev), INTENT(OUT)  :: Ccoef_XT_out
    REAL, DIMENSION(ntraciso,klon,klev), INTENT(OUT)  :: Dcoef_XT_out
    REAL, DIMENSION(ntraciso,klon,klev), INTENT(OUT)  :: gama_xt_out
#endif
!!!

! Local variables
!****************************************************************************************
    LOGICAL, SAVE                            :: first=.TRUE.
    !$OMP THREADPRIVATE(first)
! JLD now renamed h_old and declared in module
!    REAL, DIMENSION(klon,klev)               :: local_H
    REAL, DIMENSION(klon)                    :: psref 
    REAL                                     :: delz, pkh
    INTEGER                                  :: k, i, ierr

#ifdef ISO
    REAL, DIMENSION(klon,2:klev) :: gamaxt_tmp
    REAL, DIMENSION(klon,klev) :: xt_tmp
    REAL, DIMENSION(klon,klev) ::  Ccoef_XT_tmp,Dcoef_XT_tmp
    REAL, DIMENSION(klon) ::  Acoef_XT_tmp,Bcoef_XT_tmp
    INTEGER ixt
#endif 
! Include
!****************************************************************************************

#ifdef ISO
#ifdef ISOVERIF
   IF (iso_eau.gt.0) THEN
       do k = 1, klev
          DO i = 1, knon
            CALL iso_verif_egalite_choix( &
                xt(iso_eau,i,k),q(i,k), &
                'climb_hq 100',errmax,errmaxrel)
          enddo
       enddo
   endif ! if (iso_eau.gt.0) THEN
#endif
#endif

!****************************************************************************************
! 1)
! Allocation at first time step only

!****************************************************************************************

    IF (first) THEN
       first=.FALSE.
       ALLOCATE(Ccoef_Q(klon,klev), STAT=ierr)
       IF ( ierr /= 0 )  PRINT*,' pb in allloc Ccoef_Q, ierr=', ierr
       
       ALLOCATE(Dcoef_Q(klon,klev), STAT=ierr)
       IF ( ierr /= 0 )  PRINT*,' pb in allloc Dcoef_Q, ierr=', ierr
       
       ALLOCATE(Ccoef_H(klon,klev), STAT=ierr)
       IF ( ierr /= 0 )  PRINT*,' pb in allloc Ccoef_H, ierr=', ierr
       
       ALLOCATE(Dcoef_H(klon,klev), STAT=ierr)
       IF ( ierr /= 0 )  PRINT*,' pb in allloc Dcoef_H, ierr=', ierr
       
       ALLOCATE(Acoef_Q(klon), Bcoef_Q(klon), Acoef_H(klon), Bcoef_H(klon), STAT=ierr)
       IF ( ierr /= 0 )  PRINT*,' pb in allloc Acoef_X and Bcoef_X, ierr=', ierr
       
       ALLOCATE(Kcoefhq(klon,klev), STAT=ierr)
       IF ( ierr /= 0 )  PRINT*,' pb in allloc Kcoefhq, ierr=', ierr
       
       ALLOCATE(gamaq(1:klon,2:klev), STAT=ierr)
       IF ( ierr /= 0 ) PRINT*,' pb in allloc gamaq, ierr=', ierr
       
       ALLOCATE(gamah(1:klon,2:klev), STAT=ierr)
       IF ( ierr /= 0 ) PRINT*,' pb in allloc gamah, ierr=', ierr

#ifdef ISO
       ALLOCATE(Ccoef_XT(ntraciso,klon,klev), STAT=ierr)
       IF ( ierr /= 0 )  PRINT*,' pb in allloc Ccoef_XT, ierr=', ierr
       
       ALLOCATE(Dcoef_XT(ntraciso,klon,klev), STAT=ierr)
       IF ( ierr /= 0 )  PRINT*,' pb in allloc Dcoef_XT, ierr=', ierr
       
       ALLOCATE(Acoef_XT(ntraciso,klon), Bcoef_XT(ntraciso,klon), STAT=ierr)
       IF ( ierr /= 0 )  PRINT*,' pb in allloc Acoef_XT and Bcoef_XT, ierr=', ierr
       
        ALLOCATE(gamaxt(ntraciso,1:klon,2:klev), STAT=ierr)
       IF ( ierr /= 0 ) PRINT*,' pb in allloc gamaxt, ierr=', ierr
#endif
       
       ALLOCATE(h_old(klon,klev), STAT=ierr)
       IF ( ierr /= 0 )  PRINT*,' pb in allloc h_old, ierr=', ierr
       
       ALLOCATE(d_h_col_vdf(klon), STAT=ierr)
       IF ( ierr /= 0 )  PRINT*,' pb in allloc d_h_col_vdf, ierr=', ierr
       
       ALLOCATE(f_h_bnd(klon), STAT=ierr)
       IF ( ierr /= 0 )  PRINT*,' pb in allloc f_h_bnd, ierr=', ierr
    END IF

!****************************************************************************************
! 2)
! Definition of the coeficient K 

!****************************************************************************************
    Kcoefhq(:,:) = 0.0
    DO k = 2, klev
       DO i = 1, knon
          Kcoefhq(i,k) = &
               coefhq(i,k)*RG*RG*dtime /(pplay(i,k-1)-pplay(i,k)) &
               *(paprs(i,k)*2/(temp(i,k)+temp(i,k-1))/RD)**2
       ENDDO
    ENDDO

!****************************************************************************************
! 3)
! Calculation of gama for "Q" and "H"

!****************************************************************************************
!   surface pressure is used as reference
    psref(:) = paprs(:,1) 

!   definition of gama
    IF (iflag_pbl == 1) THEN
       gamaq(:,:) = 0.0
       gamah(:,:) = -1.0e-03
       gamah(:,2) = -2.5e-03
#ifdef ISO
       do ixt=1,ntraciso
        gamaxt(:,:,:) = 0.0
       enddo ! do ixt=1,ntraciso
#endif
 
! conversion de gama
       DO k = 2, klev
          DO i = 1, knon
             delz = RD * (temp(i,k-1)+temp(i,k)) / & 
                    2.0 / RG / paprs(i,k) * (pplay(i,k-1)-pplay(i,k))
             pkh  = (psref(i)/paprs(i,k))**RKAPPA
          
! convertie gradient verticale d'humidite specifique en difference d'humidite specifique entre centre de couches
             gamaq(i,k) = gamaq(i,k) * delz    
! convertie gradient verticale de temperature en difference de temperature potentielle entre centre de couches 
             gamah(i,k) = gamah(i,k) * delz * RCPD * pkh
#ifdef ISO
             do ixt=1,ntraciso
              gamaxt(ixt,i,k) = gamaxt(ixt,i,k) * delz
             enddo
#endif
          ENDDO
       ENDDO

    ELSE
       gamaq(:,:) = 0.0
       gamah(:,:) = 0.0
#ifdef ISO
       do ixt=1,ntraciso
        gamaxt(:,:,:) = 0.0
       enddo ! do ixt=1,ntraciso
#endif
    ENDIF
    
#ifdef ISO
#ifdef ISOVERIF
        do k = 2, klev
          DO i = 1, knon
            CALL iso_verif_egalite_choix( &
                gamaxt(iso_eau,i,k),gamaq(i,k), &
                'climb_hq 209',errmax,errmaxrel)
          enddo
       enddo
#endif
#endif
    

!****************************************************************************************    
! 4)
! Calculte the coefficients C and D for specific humidity, q

!****************************************************************************************
    
    CALL calc_coef(knon, Kcoefhq(:,:), gamaq(:,:), delp(:,:), q(:,:), &
         Ccoef_Q(:,:), Dcoef_Q(:,:), Acoef_Q, Bcoef_Q)


#ifdef ISO
        do ixt=1,ntraciso        
        ! compression
        do k = 2, klev
          DO i = 1, knon
            gamaxt_tmp(i,k)=gamaxt(ixt,i,k)
          enddo
        enddo !do k = 2, klev
        do k = 1, klev
          DO i = 1, knon
            xt_tmp(i,k)=xt(ixt,i,k)
          enddo
        enddo !do k = 2, klev
        !appel routine generique
          CALL calc_coef(knon, Kcoefhq(:,:), gamaxt_tmp(:,:), delp(:,:), xt_tmp(:,:), &
                Ccoef_XT_tmp(:,:), Dcoef_XT_tmp(:,:), Acoef_XT_tmp, Bcoef_XT_tmp)  

        ! decompression
        do k = 1, klev
          DO i = 1, knon
            Ccoef_XT(ixt,i,k)=Ccoef_XT_tmp(i,k)
            Dcoef_XT(ixt,i,k)=Dcoef_XT_tmp(i,k)
          enddo
        enddo !do k = 2, klev
        DO i = 1, knon
            Acoef_XT(ixt,i)=Acoef_XT_tmp(i)
            Bcoef_XT(ixt,i)=Bcoef_XT_tmp(i)
        enddo
       enddo ! do ixt=1,ntraciso
#ifdef ISOVERIF
        IF (iso_eau.gt.0) THEN
         do k = 1, klev
          DO i = 1, knon
            CALL iso_verif_egalite_choix( &
                Ccoef_XT(iso_eau,i,k),Ccoef_Q(i,k), &
                        'climb_hq 234c',errmax,errmaxrel)
            CALL iso_verif_egalite_choix( &
                Dcoef_XT(iso_eau,i,k),Dcoef_Q(i,k), &
                        'climb_hq 234d',errmax,errmaxrel)
          enddo !DO i = 1, knon
         enddo !do k = 2, klev
         DO i = 1, knon
            CALL iso_verif_egalite_choix( &
                Acoef_XT(iso_eau,i),Acoef_Q(i), &
                        'climb_hq 234a',errmax,errmaxrel)
            CALL iso_verif_egalite_choix( &
                Bcoef_XT(iso_eau,i),Bcoef_Q(i), &
                        'climb_hq 234b',errmax,errmaxrel)
         enddo !DO i = 1, knon
        endif !if (iso_eau.gt.0) THEN
#endif
#endif  
!****************************************************************************************
! 5)
! Calculte the coefficients C and D for potentiel entalpie, H 

!****************************************************************************************
    h_old(:,:) = 0.0

    DO k=1,klev
       DO i = 1, knon
          ! convertie la temperature en entalpie potentielle
          h_old(i,k) = RCPD * temp(i,k) * &
               (psref(i)/pplay(i,k))**RKAPPA
       ENDDO
    ENDDO

    CALL calc_coef(knon, Kcoefhq(:,:), gamah(:,:), delp(:,:), h_old(:,:), &
         Ccoef_H(:,:), Dcoef_H(:,:), Acoef_H, Bcoef_H)
 
!****************************************************************************************
! 6)
! Return the first layer in output variables

!****************************************************************************************
    Acoef_H_out = Acoef_H
    Bcoef_H_out = Bcoef_H
    Acoef_Q_out = Acoef_Q
    Bcoef_Q_out = Bcoef_Q
#ifdef ISO
    Acoef_XT_out = Acoef_XT
    Bcoef_XT_out = Bcoef_XT
#endif

!****************************************************************************************
! 7)
! If Pbl is split, return also the other layers in output variables

!****************************************************************************************
!!! jyg le 07/02/2012
!!jyg       IF (mod(iflag_pbl_split,2) .EQ.1) THEN
       IF (mod(iflag_pbl_split,10) >=1) THEN
!!! nrlmd le 02/05/2011
    DO k= 1, klev
      DO i= 1, klon
        Ccoef_H_out(i,k) = Ccoef_H(i,k)
        Dcoef_H_out(i,k) = Dcoef_H(i,k)
        Ccoef_Q_out(i,k) = Ccoef_Q(i,k)
        Dcoef_Q_out(i,k) = Dcoef_Q(i,k)
        Kcoef_hq_out(i,k) = Kcoefhq(i,k)
#ifdef ISO
        do ixt=1,ntraciso
          Ccoef_XT_out(ixt,i,k) = Ccoef_XT(ixt,i,k)
          Dcoef_XT_out(ixt,i,k) = Dcoef_XT(ixt,i,k)              
        enddo   
#endif
          IF (k==1) THEN
            gama_h_out(i,k)  = 0.
            gama_q_out(i,k)  = 0.
#ifdef ISO
            do ixt=1,ntraciso
              gama_xt_out(ixt,i,k)  = 0. 
            enddo   
#endif
          ELSE
            gama_h_out(i,k)  = gamah(i,k)
            gama_q_out(i,k)  = gamaq(i,k)
#ifdef ISO
            do ixt=1,ntraciso
              gama_xt_out(ixt,i,k)  = gamaxt(ixt,i,k) 
            enddo   
#endif
          ENDIF
      ENDDO
    ENDDO
!!!      
       ENDIF  ! (mod(iflag_pbl_split,2) .ge.1)
!!!

  END SUBROUTINE climb_hq_down

!****************************************************************************************

  SUBROUTINE calc_coef(knon, Kcoef, gama, delp, X, Ccoef, Dcoef, Acoef, Bcoef)

! Calculate the coefficients C and D in : X(k) = C(k) + D(k)*X(k-1)
! where X is H or Q, and k the vertical level k=1,klev

    USE lmdz_yomcst

    IMPLICIT NONE

! Input arguments
!****************************************************************************************
    INTEGER, INTENT(IN)                      :: knon
    REAL, DIMENSION(klon,klev), INTENT(IN)   :: Kcoef, delp
    REAL, DIMENSION(klon,klev), INTENT(IN)   :: X
    REAL, DIMENSION(klon,2:klev), INTENT(IN) :: gama

! Output arguments
!****************************************************************************************
    REAL, DIMENSION(klon), INTENT(OUT)       :: Acoef, Bcoef
    REAL, DIMENSION(klon,klev), INTENT(OUT)  :: Ccoef, Dcoef

! Local variables
!****************************************************************************************
    INTEGER                                  :: k, i
    REAL                                     :: buf

!****************************************************************************************
! Niveau au sommet, k=klev

!****************************************************************************************
    Ccoef(:,:) = 0.0
    Dcoef(:,:) = 0.0

    DO i = 1, knon
       buf = delp(i,klev) + Kcoef(i,klev)
       
       Ccoef(i,klev) = (X(i,klev)*delp(i,klev) - Kcoef(i,klev)*gama(i,klev))/buf
       Dcoef(i,klev) = Kcoef(i,klev)/buf
    END DO


!****************************************************************************************
! Niveau  (klev-1) <= k <= 2

!****************************************************************************************

    DO k=(klev-1),2,-1
       DO i = 1, knon
          buf = delp(i,k) + Kcoef(i,k) + Kcoef(i,k+1)*(1.-Dcoef(i,k+1))
          Ccoef(i,k) = (X(i,k)*delp(i,k) + Kcoef(i,k+1)*Ccoef(i,k+1) + &
               Kcoef(i,k+1)*gama(i,k+1) - Kcoef(i,k)*gama(i,k))/buf
          Dcoef(i,k) = Kcoef(i,k)/buf
       END DO
    END DO

!****************************************************************************************
! Niveau k=1

!****************************************************************************************

    DO i = 1, knon
       buf = delp(i,1) + Kcoef(i,2)*(1.-Dcoef(i,2))
       Acoef(i) = (X(i,1)*delp(i,1) + Kcoef(i,2)*(gama(i,2)+Ccoef(i,2)))/buf
       Bcoef(i) = -1. * RG / buf
    END DO

  END SUBROUTINE calc_coef

!****************************************************************************************

  SUBROUTINE climb_hq_up(knon, dtime, t_old, q_old, &
       flx_q1, flx_h1, paprs, pplay, &
!!! nrlmd le 02/05/2011
       Acoef_H_in, Acoef_Q_in, Bcoef_H_in, Bcoef_Q_in, &
       Ccoef_H_in, Ccoef_Q_in, Dcoef_H_in, Dcoef_Q_in, &
       Kcoef_hq_in, gama_q_in, gama_h_in, &
!!!
       flux_q, flux_h, d_q, d_t &
#ifdef ISO
       ,xt_old, flx_xt1, &
       Acoef_XT_in,Bcoef_XT_in,Ccoef_XT_in,Dcoef_XT_in,gama_xt_in,  &
       flux_xt, d_xt &
#endif       
       )

  USE lmdz_compbl, ONLY: iflag_pbl, iflag_pbl_split, iflag_order2_sollw, ifl_pbltree
  USE lmdz_yomcst
#ifdef ISOVERIF
USE infotrac_phy, ONLY: nzone
USE isotopes_mod, ONLY: iso_eau,iso_HDO,iso_O18, ridicule
USE isotopes_verif_mod
#endif

! This routine calculates the flux and tendency of the specific humidity q and 
! the potential engergi H. 
! The quantities q and H are calculated according to 
! X(k) = C(k) + D(k)*X(k-1) for X=[q,H], where the coefficients 
! C and D are known from before and k is index of the vertical layer.

! Input arguments
!****************************************************************************************
    INTEGER, INTENT(IN)                      :: knon
    REAL, INTENT(IN)                         :: dtime
    REAL, DIMENSION(klon,klev), INTENT(IN)   :: t_old, q_old
    REAL, DIMENSION(klon), INTENT(IN)        :: flx_q1, flx_h1
    REAL, DIMENSION(klon,klev+1), INTENT(IN) :: paprs
    REAL, DIMENSION(klon,klev), INTENT(IN)   :: pplay

!!! nrlmd le 02/05/2011
    REAL, DIMENSION(klon), INTENT(IN)        :: Acoef_H_in,Acoef_Q_in, Bcoef_H_in, Bcoef_Q_in
    REAL, DIMENSION(klon,klev), INTENT(IN)   :: Ccoef_H_in, Ccoef_Q_in, Dcoef_H_in, Dcoef_Q_in
    REAL, DIMENSION(klon,klev), INTENT(IN)   :: Kcoef_hq_in, gama_q_in, gama_h_in
#ifdef ISO
    REAL, DIMENSION(ntraciso,klon), INTENT(IN)        :: Acoef_XT_in,  Bcoef_XT_in
    REAL, DIMENSION(ntraciso,klon,klev), INTENT(IN)   :: Ccoef_XT_in,  Dcoef_XT_in
    REAL, DIMENSION(ntraciso,klon,klev), INTENT(IN)   :: gama_xt_in
#endif
!!!

! Output arguments
!****************************************************************************************
    REAL, DIMENSION(klon,klev), INTENT(OUT)  :: flux_q, flux_h, d_q, d_t

! Local variables
!****************************************************************************************
    LOGICAL, SAVE                            :: last=.FALSE.
    REAL, DIMENSION(klon,klev)               :: h_new, q_new
    REAL, DIMENSION(klon)                    :: psref         
    INTEGER                                  :: k, i, ierr
 
#ifdef ISO
    REAL, DIMENSION(ntraciso,klon,klev), INTENT(IN)   ::  xt_old
    REAL, DIMENSION(ntraciso,klon,klev), INTENT(OUT)  :: flux_xt, d_xt
    REAL, DIMENSION(ntraciso,klon,klev)               :: xt_new
    REAL, DIMENSION(ntraciso,klon), INTENT(IN)        :: flx_xt1
    INTEGER ixt
!#ifdef ISOVERIF
!    integer iso_verif_noNaN_nostop
!#endif
#endif

! 1) 
! Definition of some variables
    REAL, DIMENSION(klon,klev)               :: d_h, zairm

!****************************************************************************************


#ifdef ISO
#ifdef ISOVERIF
       DO k = 1, klev
        DO i = 1, knon  
         IF (iso_eau.gt.0) THEN
           CALL iso_verif_egalite(xt_old(iso_eau,i,k), &
               q_old(i,k),'climb_hq_mod 421')
         endif
#ifdef ISOTRAC
         IF(nzone > 0) CALL iso_verif_traceur(xt_old(1,i,k),'climb_hq_mod 422')
#endif
        enddo
       enddo
#endif  
#endif

    flux_q(:,:) = 0.0
    flux_h(:,:) = 0.0
    d_q(:,:)    = 0.0
    d_t(:,:)    = 0.0
    d_h(:,:)    = 0.0
    f_h_bnd(:)= 0.0
#ifdef ISO
    q_new(:,:)    = 0.0
    flux_xt(:,:,:) = 0.0
    d_xt(:,:,:)    = 0.0    
    xt_new(:,:,:)    = 0.0
#endif
    psref(1:knon) = paprs(1:knon,1)  

!!! jyg le 07/02/2012
!!jyg       IF (mod(iflag_pbl_split,2) .EQ.1) THEN
       IF (mod(iflag_pbl_split,10) >=1) THEN
!!! nrlmd le 02/05/2011
    DO i = 1, knon
      Acoef_H(i)=Acoef_H_in(i)
      Acoef_Q(i)=Acoef_Q_in(i)
      Bcoef_H(i)=Bcoef_H_in(i)
      Bcoef_Q(i)=Bcoef_Q_in(i)
#ifdef ISO
      do ixt=1,ntraciso
        Acoef_XT(ixt,i)=Acoef_XT_in(ixt,i)
        Bcoef_XT(ixt,i)=Bcoef_XT_in(ixt,i)
      enddo    
#endif
    ENDDO
    DO k = 1, klev
      DO i = 1, knon
        Ccoef_H(i,k)=Ccoef_H_in(i,k)
        Ccoef_Q(i,k)=Ccoef_Q_in(i,k)
        Dcoef_H(i,k)=Dcoef_H_in(i,k)
        Dcoef_Q(i,k)=Dcoef_Q_in(i,k)
        Kcoefhq(i,k)=Kcoef_hq_in(i,k)
#ifdef ISO
      do ixt=1,ntraciso
        Ccoef_XT(ixt,i,k)=Ccoef_XT_in(ixt,i,k)
        Dcoef_XT(ixt,i,k)=Dcoef_XT_in(ixt,i,k)
      enddo    
#endif
          IF (k>1) THEN
            gamah(i,k)=gama_h_in(i,k)
            gamaq(i,k)=gama_q_in(i,k)
#ifdef ISO
            do ixt=1,ntraciso
              gamaxt(ixt,i,k)=gama_xt_in(ixt,i,k)
            enddo 
#endif
          ENDIF
      ENDDO
    ENDDO
!!!      
       ENDIF  ! (mod(iflag_pbl_split,2) .ge.1)
!!!

!****************************************************************************************
! 2)
! Calculation of Q and H

!****************************************************************************************

!- First layer
    q_new(1:knon,1) = Acoef_Q(1:knon) + Bcoef_Q(1:knon)*flx_q1(1:knon)*dtime
    h_new(1:knon,1) = Acoef_H(1:knon) + Bcoef_H(1:knon)*flx_h1(1:knon)*dtime
    f_h_bnd(1:knon) = flx_h1(1:knon)
#ifdef ISO
    do ixt=1,ntraciso
      xt_new(ixt,1:knon,1) = Acoef_XT(ixt,1:knon) + Bcoef_XT(ixt,1:knon)*flx_xt1(ixt,1:knon)*dtime
    enddo ! do ixt=1,ntraciso
#endif
!- All the other layers 
    DO k = 2, klev
       DO i = 1, knon
          q_new(i,k) = Ccoef_Q(i,k) + Dcoef_Q(i,k)*q_new(i,k-1)
          h_new(i,k) = Ccoef_H(i,k) + Dcoef_H(i,k)*h_new(i,k-1)
#ifdef ISO
        do ixt=1,ntraciso
          xt_new(ixt,i,k) = Ccoef_XT(ixt,i,k) + Dcoef_XT(ixt,i,k)*xt_new(ixt,i,k-1)
        enddo ! do ixt=1,ntraciso
#endif
       END DO
    END DO

#ifdef ISO
#ifdef ISOVERIF
    DO k = 1, klev
       DO i = 1, knon     
        do ixt=1,ntraciso
         IF (iso_verif_noNaN_nostop(xt_new(ixt,i,k),'climb_hq 507').EQ.1) THEN
             WRITE(*,*) 'Acoef_XT(ixt,i)=',Acoef_XT(ixt,i)
             WRITE(*,*) 'Bcoef_XT(ixt,i)=',Bcoef_XT(ixt,i)
             WRITE(*,*) 'flx_xt1(ixt,i)=',flx_xt1(ixt,i)
             IF (k.ge.2) THEN
               WRITE(*,*) 'Ccoef_XT(ixt,i,k)=',Ccoef_XT(ixt,i,k)
               WRITE(*,*) 'Dcoef_XT(ixt,i,k)=',Dcoef_XT(ixt,i,k)
             endif
             stop
         endif
        enddo !do ixt=1,ntraciso
       END DO
    END DO        
#endif
#ifdef ISOVERIF
     IF (iso_eau.gt.0) THEN
        CALL iso_verif_egalite_vect2D( &
                 xt_new,q_new, &
                 'climb_hq_mod 504',ntraciso,klon,klev)
     endif !if (iso_eau.gt.0) THEN
     IF ((iso_HDO.gt.0).AND.(iso_O18.gt.0)) THEN
        do i=1,klon 
         do k=1,klev 
            IF (q_new(i,k).gt.ridicule) THEN
               IF (iso_verif_o18_aberrant_nostop( &
                    xt_new(iso_HDO,i,k)/q_new(i,k), &
                    xt_new(iso_O18,i,k)/q_new(i,k), &
                    'climb_hq_mod 690').EQ.1) THEN
                  WRITE(*,*) 'i,k,q_new(i,k)=',i,k,q_new(i,k)
                  stop
              endif !  if (iso_verif_o18_aberrant_nostop 
            endif !if (q_seri(i,k).gt.errmax) THEN
          enddo !k=1,klev
         enddo  !i=1,klon
        endif !if ((iso_HDO.gt.0).AND.(iso_O18.gt.0)) THEN
#endif
#endif   
!****************************************************************************************
! 3)
! Calculation of the flux for Q and H

!****************************************************************************************

!- The flux at first layer, k=1
    flux_q(1:knon,1)=flx_q1(1:knon)
    flux_h(1:knon,1)=flx_h1(1:knon)
#ifdef ISO
    do ixt=1,ntraciso
        flux_xt(ixt,1:knon,1)=flx_xt1(ixt,1:knon)
    enddo ! do ixt=1,ntraciso
#endif

!- The flux at all layers above surface
    DO k = 2, klev
       DO i = 1, knon
          flux_q(i,k) = (Kcoefhq(i,k)/RG/dtime) * &
               (q_new(i,k)-q_new(i,k-1)+gamaq(i,k))

          flux_h(i,k) = (Kcoefhq(i,k)/RG/dtime) * &
               (h_new(i,k)-h_new(i,k-1)+gamah(i,k)) 

#ifdef ISO
        do ixt=1,ntraciso
          flux_xt(ixt,i,k) = (Kcoefhq(i,k)/RG/dtime) * &
               (xt_new(ixt,i,k)-xt_new(ixt,i,k-1)+gamaxt(ixt,i,k))
        enddo ! do ixt=1,ntraciso
#endif
       END DO
    END DO

!****************************************************************************************
! 4)
! Calculation of tendency for Q and H

!****************************************************************************************
    d_h_col_vdf(:) = 0.0
    DO k = 1, klev
       DO i = 1, knon
          d_t(i,k) = h_new(i,k)/(psref(i)/pplay(i,k))**RKAPPA/RCPD - t_old(i,k)
          d_q(i,k) = q_new(i,k) - q_old(i,k)
          d_h(i,k) = h_new(i,k) - h_old(i,k)
!JLD          d_t(i,k) = d_h(i,k)/(psref(i)/pplay(i,k))**RKAPPA/RCPD    !correction a venir
    ! layer air mass
          zairm(i, k) = (paprs(i,k)-paprs(i,k+1))/rg
          d_h_col_vdf(i) = d_h_col_vdf(i) + d_h(i,k)*zairm(i,k)
#ifdef ISO
        do ixt=1,ntraciso
          d_xt(ixt,i,k) = xt_new(ixt,i,k) - xt_old(ixt,i,k)
        enddo ! do ixt=1,ntraciso
#ifdef ISOVERIF
        do ixt=1,ntraciso
          CALL iso_verif_noNaN(xt_new(ixt,i,k),'climb_hq 562')
          CALL iso_verif_noNaN(d_xt(ixt,i,k),'climb_hq 562')
        enddo ! do ixt=1,ntraciso
#endif
#ifdef ISOVERIF
        IF (iso_eau.gt.0) THEN
           CALL iso_verif_egalite(d_xt(iso_eau,i,k), &
               d_q(i,k),'climb_hq_mod 503')
           CALL iso_verif_egalite(xt_new(iso_eau,i,k), &
               q_new(i,k),'climb_hq_mod 503b')
        endif
#ifdef ISOTRAC
        IF(nzone > 0) CALL iso_verif_traceur(xt_old(1,i,k),'climb_hq_mod 526')
#endif       
#endif        
#endif
        END DO
    END DO

#ifdef ISO
#ifdef ISOVERIF
!        WRITE(*,*) 'climb_hq_mod 758: d_xt,d_q=',d_xt(iso_eau,1,1),d_q(1,1)
        IF (iso_eau.gt.0) THEN
         CALL iso_verif_egalite_vect2D( &
                d_xt,d_q, &
                'climb_hq_mod 761',ntraciso,klon,klev)
        endif       
#endif
#endif

!****************************************************************************************
! Some deallocations

!****************************************************************************************
    IF (last) THEN
       DEALLOCATE(Ccoef_Q, Dcoef_Q, Ccoef_H, Dcoef_H,stat=ierr)    
       IF ( ierr /= 0 )  PRINT*,' pb in dealllocate Ccoef_Q, Dcoef_Q, Ccoef_H, Dcoef_H, ierr=', ierr
       DEALLOCATE(Acoef_Q, Bcoef_Q, Acoef_H, Bcoef_H,stat=ierr)    
       IF ( ierr /= 0 )  PRINT*,' pb in dealllocate Acoef_Q, Bcoef_Q, Acoef_H, Bcoef_H, ierr=', ierr
       DEALLOCATE(gamaq, gamah,stat=ierr)
       IF ( ierr /= 0 )  PRINT*,' pb in dealllocate gamaq, gamah, ierr=', ierr
       DEALLOCATE(Kcoefhq,stat=ierr)
       IF ( ierr /= 0 )  PRINT*,' pb in dealllocate Kcoefhq, ierr=', ierr
       DEALLOCATE(h_old, d_h_col_vdf, f_h_bnd, stat=ierr)
       IF ( ierr /= 0 )  PRINT*,' pb in dealllocate h_old, d_h_col_vdf, f_h_bnd, ierr=', ierr

#ifdef ISO
       DEALLOCATE(Ccoef_XT, Dcoef_XT ,stat=ierr)    
       IF ( ierr /= 0 )  PRINT*,' pb in dealllocate Ccoef_XT, Dcoef_XT, ierr=', ierr
       DEALLOCATE(Acoef_XT, Bcoef_XT, stat=ierr)    
       IF ( ierr /= 0 )  PRINT*,' pb in dealllocate Acoef_XT, Bcoef_XT, ierr=', ierr
       DEALLOCATE(gamaxt, stat=ierr)
       IF ( ierr /= 0 )  PRINT*,' pb in dealllocate gamaxt, ierr=', ierr
#endif
    END IF
  END SUBROUTINE climb_hq_up

!****************************************************************************************

END MODULE climb_hq_mod