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  • !ORILAM_LIC Copyright 1994-2014 CNRS, Meteo-France and Universite Paul Sabatier
    !ORILAM_LIC This is part of the ORILAM software governed by the CeCILL-C licence
    !ORILAM_LIC version 1. See LICENSE, CeCILL-C_V1-en.txt and CeCILL-C_V1-fr.txt
    !ORILAM_LIC for details.
    
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    !-----------------------------------------------------------------
    !--------------- special set of characters for RCS information
    !-----------------------------------------------------------------
    ! $Source$ $Revision$
    ! MASDEV4_7 chimie 2006/05/18 13:07:25
    !-----------------------------------------------------------------
    !!   ########################
         MODULE MODI_CH_AER_COAG
    !!   ########################
    !!
    INTERFACE
    !!
    SUBROUTINE CH_AER_COAG(PM, PSIG0, PRG0, PN0,PDMINTRA,PDMINTER,PTGAS,PMU,&
                             PLAMBDA,PRHOP0)
    IMPLICIT NONE
    REAL, DIMENSION(:,:), INTENT(INOUT) :: PM,PRHOP0 
    REAL, DIMENSION(:),   INTENT(INOUT) :: PLAMBDA, PMU
    REAL, DIMENSION(:,:), INTENT(INOUT) :: PDMINTRA
    REAL, DIMENSION(:,:), INTENT(INOUT) :: PDMINTER
    REAL, DIMENSION(:),INTENT(IN) :: PTGAS
    REAL,   DIMENSION(:,:), INTENT(IN) :: PSIG0, PRG0, PN0
    END SUBROUTINE CH_AER_COAG
    !!
    END INTERFACE
    !!
    END MODULE MODI_CH_AER_COAG
    !!
    !!   #############################################
         SUBROUTINE CH_AER_COAG(PM, PSIG0, PRG0, PN0,PDMINTRA,PDMINTER,PTGAS,PMU,&
                                  PLAMBDA,PRHOP0)
    !!   #############################################
    !!
    !!   PURPOSE
    !!   -------
    !!
    !!   compute the terms due to Brownian, turbulent and Gravitational
    !!   coagulation:
    !!   a set of arrays are used to evaluate the double integral
    !!    REFERENCE
    !!    ---------
    !!    none
    !!
    !!    AUTHOR
    !!    ------
    !!    Vincent Crassier (LA)
    !!
    !!    MODIFICATIONS
    !!    -------------
    !*****************************************************************
    ! * Arrays of numerical evaluation of coagulation terms
    !   in the free-molecule regime (computed from the ESMAP code)
    !
    ! ZINTRA     - Intamodal coagulation, mode i,j 0th and 6th Moment
    !
    ! ZINTER0I   - Intermodal coagulation, mode i, 0th Moment
    ! ZINTER3I   - Intermodal coagulation, mode i, 3rd Moment
    ! ZINTER6I   - Intermodal coagulation, mode i, 6th Moment
    ! ZINTER6J   - Intermodal coagulation, mode j, 6th Moment
    !
    ! * Variables used during the coefficients evaluation
    ! ZXI(i)     - Variables values at the array nodes
    ! ZXINT(i)   - Variables values where the interpolation
    !             is to be made
    !
    ! intramodal coagulation
    !
    ! ZXINTRAMIN     - Minimal value of ln(sigma)
    ! ZXINTRAMAX     - Maximal value of ln(sigma)
    ! ZDXINTRA       - Step of ln(sigma) in the array
    !
    ! intermodal coagulation
    !
    ! ZXINTERMIN(i)  - Minimal value of the variable i
    ! ZXINTERMAX(i)  - Maximal value of the variable i
    ! ZDXINTER(i)    - Step of the variable i in the arrays
    !
    ! i=1           - ln(sigmaj)
    ! i=2           - ln(sigmai)
    ! i=3           - ln((ZR=Rgj/Rgi)**2)
    !
    !***************************************************************
    !!
    !!   EXTERNAL
    !!   -------
    !!
    !!   IMPLICIT ARGUMENTS
    !!   ------------------
    !!
    USE MODD_CH_AEROSOL
    USE MODD_CST, ONLY :    &
           XPI              & !Definition of pi
          ,XBOLTZ            ! Boltzman constant
    !!
    IMPLICIT NONE
    !
    !*       0.1   Declarations of arguments
    !
    REAL, DIMENSION(:,:), INTENT(INOUT) :: PM,PRHOP0 
    REAL, DIMENSION(:),   INTENT(INOUT) :: PLAMBDA, PMU
    REAL, DIMENSION(:,:), INTENT(INOUT) :: PDMINTRA
    REAL, DIMENSION(:,:), INTENT(INOUT) :: PDMINTER
    REAL, DIMENSION(:),INTENT(IN) :: PTGAS
    REAL,   DIMENSION(:,:), INTENT(IN) :: PSIG0, PRG0, PN0
    !
    !*       0.2   Declarations of local variables
    !
    INTEGER :: JI,JJ
    !
    REAL :: ZTURBDS ! Rate of dissipation of kinetic energy per unit mass (m2/s3)
    !
    REAL, DIMENSION(SIZE(PM,1)) :: ZKFM,ZKNC
    !REAL, DIMENSION(SIZE(PM,1)) :: ZKTURB,ZKGRAV,ZR3,ZRM4
    REAL, DIMENSION(SIZE(PM,1)) :: ZR,ZR2,ZR4
    REAL, DIMENSION(SIZE(PM,1)) :: ZRM,ZRM2,ZRM3
    REAL, DIMENSION(SIZE(PM,1)) :: ZKNG
    REAL, DIMENSION(SIZE(PM,1)) :: ZAI,ZKNGI,ZAJ,ZKNGJ
    REAL, DIMENSION(SIZE(PM,1)) :: ZINTRA0NC,ZINTRA0FM,ZINTRA0
    REAL, DIMENSION(SIZE(PM,1)) :: ZINTRA3NC,ZINTRA3FM,ZINTRA3
    REAL, DIMENSION(SIZE(PM,1)) :: ZINTRA6NC,ZINTRA6FM,ZINTRA6
    REAL, DIMENSION(SIZE(PM,1)) :: ZINTERNC,ZINTERFM,ZINTER
    REAL, DIMENSION(SIZE(PM,1)) :: ZAPPROX
    !
    REAL, DIMENSION(SIZE(PM,1)) :: ZA,ZB,ZC,ZD
    REAL, DIMENSION(SIZE(PM,1)) :: ZRGJ, ZRGI, ZRG
    !
    REAL, DIMENSION(SIZE(PM,1)) :: ZERF0,ZPHI0,ZXi,ZSOL
    REAL, DIMENSION(SIZE(PM,1)) :: ZERF3,ZPHI3
    REAL, DIMENSION(SIZE(PM,1)) :: ZERF6,ZPHI6
    REAL, DIMENSION(SIZE(PM,1),JPMODE) :: ZINVSIG,ZLNDG
    !
    REAL, DIMENSION(SIZE(PM,1),JPMODE) :: ZESG01,ZESG04,ZESG05,ZESG08,ZESG09
    REAL, DIMENSION(SIZE(PM,1),JPMODE) :: ZESG12,ZESG16
    REAL, DIMENSION(SIZE(PM,1),JPMODE) :: ZESG20,ZESG24,ZESG25,ZESG28
    REAL, DIMENSION(SIZE(PM,1),JPMODE) :: ZESG32,ZESG36
    REAL, DIMENSION(SIZE(PM,1),JPMODE) :: ZESG49
    REAL, DIMENSION(SIZE(PM,1),JPMODE) :: ZESG52
    REAL, DIMENSION(SIZE(PM,1),JPMODE) :: ZESG64
    REAL, DIMENSION(SIZE(PM,1),JPMODE) :: ZESG81,ZESG85
    REAL, DIMENSION(SIZE(PM,1),JPMODE) :: ZESG100,ZESG121,ZESG144,ZESG169,ZESG196
    REAL, DIMENSION(SIZE(PM,1),JPMODE) :: ZESG256
    REAL, DIMENSION(SIZE(PM,1)) :: ZRB0,ZRB6
    REAL, DIMENSION(SIZE(PM,1)) :: ZRES
    !-------------------------------------------------------------------------------!
    ZTURBDS=0.001
    ZKNC(:)=2.*XBOLTZ*PTGAS(:)/(3.*PMU(:))
    !
    PDMINTRA(:,:)=0.
    PDMINTER(:,:)=0.
    !
    !****************************************************************
    ! Initialisation des variables utilisees dans le calcul des
    ! coefficients de coagulation
    !****************************************************************
    
    ZESG01(:,:) = exp(0.125*PSIG0(:,1:JPMODE)**2)            
    ZESG04(:,:)  = ZESG01(:,:) ** 4            
    ZESG05(:,:)  = ZESG04(:,:) * ZESG01(:,:)                        
    ZESG08(:,:)  = ZESG04(:,:) * ZESG04(:,:)                        
    ZESG09(:,:)  = ZESG04(:,:) * ZESG05(:,:)            
    ZESG12(:,:)  = ZESG04(:,:) * ZESG04(:,:) * ZESG04(:,:)
    ZESG16(:,:)  = ZESG08(:,:) * ZESG08(:,:)
    ZESG20(:,:)  = ZESG16(:,:) * ZESG04(:,:)
    ZESG24(:,:)  = ZESG12(:,:) * ZESG12(:,:)
    ZESG25(:,:)  = ZESG16(:,:) * ZESG09(:,:)
    ZESG28(:,:)  = ZESG20(:,:) * ZESG08(:,:)
    ZESG32(:,:)  = ZESG16(:,:) * ZESG16(:,:)
    ZESG36(:,:)  = ZESG16(:,:) * ZESG20(:,:)
    ZESG49(:,:)  = ZESG25(:,:) * ZESG20(:,:) * ZESG04(:,:)
    ZESG52(:,:)  = ZESG16(:,:) * ZESG36(:,:)
    ZESG64(:,:)  = ZESG32(:,:) * ZESG32(:,:)
    ZESG81(:,:)  = ZESG49(:,:) * ZESG32(:,:)
    ZESG85(:,:)  = ZESG64(:,:) * ZESG20(:,:) * ZESG01(:,:)
    ZESG100(:,:) = ZESG36(:,:) * ZESG64(:,:) 
    ZESG121(:,:) = ZESG85(:,:) * ZESG36(:,:)
    ZESG144(:,:) = ZESG100(:,:) * ZESG36(:,:) * ZESG08(:,:)
    ZESG169(:,:) = ZESG144(:,:) * ZESG25(:,:)
    ZESG196(:,:) = ZESG144(:,:) * ZESG52(:,:)
    ZESG256(:,:) = ZESG144(:,:) * ZESG100(:,:) * ZESG12(:,:)
    
    !***************************************************************
    ! Transfert de moments entre les modes i et j
    !***************************************************************
    
    ZINVSIG(:,:)=1./PSIG0(:,1:JPMODE)**2
    ZLNDG(:,:)=log(2.*PRG0(:,1:JPMODE))
    
    ZA(:)=0.5*(ZINVSIG(:,1)-ZINVSIG(:,2))
    ZD(:) = 0.
    ZXi(:)= 0.
    
    WHERE (ABS(ZA(:)) > 1E-4)
      ZB(:)=ZINVSIG(:,2)*ZLNDG(:,2)-ZINVSIG(:,1)*ZLNDG(:,1)
      ZC(:)=0.5*(ZINVSIG(:,1)*ZLNDG(:,1)**2-ZINVSIG(:,2)*ZLNDG(:,2)**2) - &
           &log((PN0(:,1)*PSIG0(:,2))/(PN0(:,2)*PSIG0(:,1)))
    
      ZD(:)=ZB(:)**2-4.*ZA(:)*ZC(:)
    
      ZSOL(:)=(-ZB(:)+sqrt(ABS(ZD(:))))/(2.*ZA(:))
      WHERE (ZSOL(:) < 5.E+2)
        ZSOL(:)=exp(ZSOL(:))/2.
        ZXi(:)=log(ZSOL(:)/PRG0(:,1))/(sqrt(2.)*PSIG0(:,1))
      ENDWHERE
    ENDWHERE
    
    !*********************************************************************
    !      calculate the intramodal moment coefficients (log-normal model)
    !*********************************************************************
           
    do JI=1,JPMODE
    
      ZKFM(:)=sqrt(3.*XBOLTZ*PTGAS(:)/PRHOP0(:,JI))*1.e-3
      !ZKTURB(:)=sqrt(XPI*ZTURBDS*PMU(:)/(120.*PRHOP0(:,JI)))*1.e-18
      !ZKGRAV(:)=1.5/4.*0.544*XPI*PRHOP0(:,JI)/PMU(:)*1.e-24
    !*************************************************************
    !      calculate ZVG,ln2(sigma) and sigma
    !      (log-normal model)
    !*************************************************************
    
      ZRG(:)=PRG0(:,JI)
      ZKNG(:)=PLAMBDA(:)/ZRG(:)
      ZAI(:)=1.392*ZKNG(:)**0.0783
    
    !***********************
    ! Brownian Coagulation  
    !***********************
           
      ZRB0(:)=0.8
      ZRB6(:)=ZRB0
           
      ZINTRA0FM(:)=ZKFM(:)*ZRB0(:)*sqrt(2.*ZRG(:))*(ZESG01(:,JI)+ZESG25(:,JI)+2.*ZESG05(:,JI))
      ZINTRA3FM(:)=ZKFM(:)*ZRB0(:)*sqrt(ZRG(:))**7*sqrt(2.)*(ZESG49(:,JI)+ZESG36(:,JI)*ZESG01(:,JI)+&
                  &2.*ZESG25(:,JI)*ZESG04(:,JI)+ZESG09(:,JI)*ZESG16(:,JI)+ZESG100(:,JI)*ZESG09(:,JI)+&
                  &2.*ZESG64(:,JI)*ZESG01(:,JI))
      ZINTRA6FM(:)=ZKFM(:)*ZRB6(:)*sqrt(ZRG(:))**13*sqrt(2.)*ZESG85(:,JI)*&
                  (1.+2.*ZESG04(:,JI)+ZESG24(:,JI))
      ZINTRA0NC(:)=ZKNC(:)*(1.+ZESG08(:,JI)+ZAI(:)*ZKNG(:)*(ZESG20(:,JI)+ZESG04(:,JI)))
      ZINTRA3NC(:)=ZKNC(:)*ZRG(:)**3*(2.*ZESG36(:,JI)+ZAI(:)*ZKNG(:)*(ZESG16(:,JI)+ZESG04(:,JI)*ZESG04(:,JI)+&
                  &ZESG36(:,JI)*ZESG04(:,JI)+ZESG64(:,JI)*ZESG16(:,JI))+ZESG16(:,JI)*ZESG04(:,JI)+&
                  &ZESG64(:,JI)*ZESG04(:,JI))
      ZINTRA6NC(:)=2.*ZKNC(:)*(ZRG(:))**6*ZESG52(:,JI)*(ZESG20(:,JI)+ZESG28(:,JI)+ZAI(:)*ZKNG(:)*(1.+ZESG16(:,JI)))
      ZINTRA0(:)=ZINTRA0FM(:)*(ZINTRA0NC(:)/(ZINTRA0FM(:)+ZINTRA0NC(:)))
      ZINTRA3(:)=ZINTRA3FM(:)*(ZINTRA3NC(:)/(ZINTRA3FM(:)+ZINTRA3NC(:)))
      ZINTRA6(:)=ZINTRA6FM(:)*(ZINTRA6NC(:)/(ZINTRA6FM(:)+ZINTRA6NC(:)))
       
      PDMINTRA(:,NM0(JI))=ZINTRA0(:)
      PDMINTRA(:,NM3(JI))=ZINTRA3(:)
      PDMINTRA(:,NM6(JI))=ZINTRA6(:)
      !print*,'PDMINTRA(:,NM0(',JI,') =',MINVAL(PDMINTRA(:,NM0(JI))), MAXVAL(PDMINTRA(:,NM0(JI)))
      !print*,'PDMINTRA(:,NM3(',JI,') =',MINVAL(PDMINTRA(:,NM3(JI))), MAXVAL(PDMINTRA(:,NM3(JI)))
      !print*,'PDMINTRA(:,NM6(',JI,') =',MINVAL(PDMINTRA(:,NM6(JI))), MAXVAL(PDMINTRA(:,NM6(JI)))
    
    enddo
    !print*,'=============================='
    !print*,'=============================='
    
    WHERE (ZD(:) > 0. .AND. ZXi(:) > (6.*PSIG0(:,1)/sqrt(2.)))
    
    ! transfert du moment d'ordre 0 (nombre)
    !**************************************
    
      ZERF0(:)=sqrt(1.-exp(-4.*(ZXi(:))**2/XPI))
      ZPHI0(:)=0.5*(1.+ZERF0(:))
    
    ! transfert du moment d'ordre 3 (masse)
    !**************************************
    
      ZERF3(:)=sqrt(1.-exp(-4.*(ZXi(:)-3.*PSIG0(:,1)/sqrt(2.))**2/XPI))
      ZPHI3(:)=0.5*(1.+ZERF3(:))
      
    ! transfert du moment d'ordre 6 (dispersion)
    !**************************************
    
      ZERF6(:)=sqrt(1.-exp(-4.*(ZXi(:)-6.*PSIG0(:,1)/sqrt(2.))**2/XPI))
      ZPHI6(:)=0.5*(1.+ZERF6(:))
      
      PDMINTRA(:,NM0(2))=PDMINTRA(:,NM0(2))-(1.-ZPHI0(:)**2)*PDMINTRA(:,NM0(1))*(PM(:,NM0(1))/PM(:,NM0(2)))**2
      PDMINTRA(:,NM0(1))=(2.-ZPHI0(:)**2)*PDMINTRA(:,NM0(1))
    
      PDMINTRA(:,NM3(2))=PDMINTRA(:,NM3(1))*(1.-ZPHI0(:)*ZPHI3(:))*PM(:,NM0(1))**2
      PDMINTRA(:,NM3(1))=PDMINTRA(:,NM3(1))*(ZPHI0(:)*ZPHI3(:)-1.)*PM(:,NM0(1))**2
      
      ZKFM(:)=sqrt(3.*XBOLTZ*PTGAS(:)/PRHOP0(:,1))*1.e-3
      ZRG(:)=PRG0(:,1)
      ZKNG(:)=PLAMBDA(:)/ZRG(:)
      ZAI(:)=1.392*ZKNG(:)**0.0783
      
      ZINTRA6FM(:)=ZKFM(:)*sqrt(2.)*sqrt(ZRG(:))**13*(ZESG169(:,1)+ZESG144(:,1)*ZESG01(:,1)+&
                   2.*ZESG121(:,1)*ZESG04(:,1)+ZESG81(:,1)*ZESG16(:,1)+&
                   ZESG256(:,1)*ZESG09(:,1)+ZESG196(:,1)*ZESG01(:,1))
    
      ZINTRA6NC(:)=ZKNC(:)*(ZRG(:))**6*(2.*ZESG144(:,1)+ZAI(:)*ZKNG(:)*(ZESG100(:,1)+&
                 ZESG64(:,1)*ZESG04(:,1))+ZAI(:)*ZKNG(:)*(ZESG144(:,1)*ZESG04(:,1)+&
                 ZESG196(:,1)*ZESG16(:,1))+ZESG100(:,1)*ZESG04(:,1)+&
                 ZESG196(:,1)*ZESG04(:,1))
                 
      ZINTRA6(:)=ZINTRA6FM(:)*(ZINTRA6NC(:)/(ZINTRA6FM(:)+ZINTRA6NC(:)))
    
      PDMINTRA(:,NM6(2))=PDMINTRA(:,NM6(2))+(PDMINTRA(:,NM6(1))*(1.-ZPHI3(:)**2)+ZINTRA6(:)*(1.-ZPHI0(:)*ZPHI6(:)))&
                        &*(PM(:,NM0(1))/PM(:,NM0(2)))**2
                       
      PDMINTRA(:,NM6(1))=PDMINTRA(:,NM6(1))*(ZPHI3(:)**2)+ZINTRA6(:)*(ZPHI0(:)*ZPHI6(:)-1.)
      
    ELSEWHERE
    
      PDMINTRA(:,NM3(1))=0.
      PDMINTRA(:,NM3(2))=0.
    
    
    ENDWHERE
    
    do JI=1,JPMODE
    !print*,'2.-ZPHI0(:)**2 =',MINVAL(2.-ZPHI0(:)**2), MAXVAL(2.-ZPHI0(:)**2)
    !  print*,'apres corr PDMINTRA(:,NM0(',JI,') =',MINVAL(PDMINTRA(:,NM0(JI))), MAXVAL(PDMINTRA(:,NM0(JI)))
    !  print*,'apres corr PDMINTRA(:,NM3(',JI,') =',MINVAL(PDMINTRA(:,NM3(JI))), MAXVAL(PDMINTRA(:,NM3(JI)))
    !  print*,'apres corr PDMINTRA(:,NM6(',JI,') =',MINVAL(PDMINTRA(:,NM6(JI))), MAXVAL(PDMINTRA(:,NM6(JI)))
     enddo
    
    !*********************************************************************
    !   calculate the intermodal moment coefficients (log-normal model)
    !*********************************************************************
    
    do JI=1,(JPMODE-1)
      do JJ=(JI+1),JPMODE
    
        ZRGI(:)=PRG0(:,JI)
        ZKNGI(:)=PLAMBDA(:)/ZRGI(:)
        ZAI(:)=1.392*ZKNGI(:)**0.0783
    
        ZRGJ(:)=PRG0(:,JJ)
        ZKNGJ(:)=PLAMBDA(:)/ZRGJ(:)
        ZAJ(:)=1.392*ZKNGJ(:)**0.0783
              
        ZR(:)=sqrt(ZRGJ(:)/ZRGI(:))
        ZR2(:)=ZR(:)*ZR(:)
        !ZR3(:)=ZR(:)*ZR2(:)
        ZR4(:)=ZR2(:)*ZR2(:)
        ZRM(:)=1./ZR(:)
        ZRM2(:)=ZRM(:)*ZRM(:)
        ZRM3(:)=ZRM(:)*ZRM2(:)
        !ZRM4(:)=ZRM2(:)*ZRM2(:)
    
    !**********************
    ! Brownian Coagulation
    !**********************
    
          ZRES(:)=0.9
    
          ZAPPROX(:)=sqrt(2.*ZRGI(:))*(ZESG01(:,JI)+ZR(:)*ZESG01(:,JJ)+2.*ZR2(:)*ZESG01(:,JI)*ZESG04(:,JJ)&
                     +ZR4(:)*ZESG09(:,JI)*ZESG16(:,JJ)+ZRM3(:)*ZESG16(:,JI)*ZESG09(:,JJ)+&
                     2.*ZRM(:)*ZESG04(:,JI)*ZESG01(:,JJ))
           
          ZINTERFM(:)=ZKFM(:)*ZRES(:)*ZAPPROX(:)
    
          ZAPPROX(:)=2.+ZAI(:)*ZKNGI(:)*(ZESG04(:,JI)+ZR2(:)*ZESG16(:,JI)*ZESG04(:,JJ))+&
                    ZAJ(:)*ZKNGJ(:)*(ZESG04(:,JJ)+ZRM2(:)*ZESG16(:,JJ)*ZESG04(:,JI))+&
                    (ZR2(:)+ZRM2(:))*(ZESG04(:,JI)*ZESG04(:,JJ))
    
          ZINTERNC(:)=ZKNC(:)*ZAPPROX(:)
    
          ZINTER(:)=ZINTERNC(:)*(ZINTERFM(:)/(ZINTERNC(:)+ZINTERFM(:)))
    
          PDMINTER(:,NM0(JI))=PM(:,NM0(JJ))*ZINTER(:)
          PDMINTER(:,NM0(JJ))=-PM(:,NM0(JJ))*ZINTER(:)
    
          ZAPPROX(:)=sqrt(2.)*sqrt(ZRGI(:))**7*(ZESG49(:,JI)+ZR(:)*ZESG36(:,JI)*ZESG01(:,JJ)+2.*ZR2(:)*&
                     ZESG25(:,JI)*ZESG04(:,JJ)+ZR4(:)*ZESG09(:,JI)*ZESG16(:,JJ)+ZRM3(:)*&
                     ZESG100(:,JI)*ZESG09(:,JJ)+2.*ZRM(:)*ZESG64(:,JI)*ZESG01(:,JJ))
    
          ZINTERFM(:)=ZKFM(:)*ZRES(:)*ZAPPROX(:)
    
          ZAPPROX(:)=(2.*ZESG36(:,JI)+ZAI(:)*ZKNGI(:)*(ZESG16(:,JI)+ZR2(:)*ZESG04(:,JI)*ZESG04(:,JJ))+&
          ZAJ(:)*ZKNGJ(:)*(ZESG36(:,JI)*ZESG04(:,JJ)+ZRM2(:)*ZESG16(:,JJ)*ZESG64(:,JI))+&
          ZR2(:)*ZESG16(:,JI)*ZESG04(:,JJ)+ZRM2(:)*ZESG64(:,JI)*ZESG04(:,JJ))*(ZRGI(:))**3      
    
          ZINTERNC(:)=ZKNC(:)*ZAPPROX(:)
    
          ZINTER(:)=ZINTERNC(:)*(ZINTERFM(:)/(ZINTERNC(:)+ZINTERFM(:)))
           
          PDMINTER(:,NM3(JI))=-PM(:,NM0(JI))*PM(:,NM0(JJ))*ZINTER(:)
          PDMINTER(:,NM3(JJ))=PM(:,NM0(JI))*PM(:,NM0(JJ))*ZINTER(:)
    
          ZAPPROX(:)=sqrt(2.)*sqrt(ZRGI(:))**13*(ZESG169(:,JI)+ZR(:)*ZESG144(:,JI)*ZESG01(:,JJ)+&
                 2.*ZR2(:)*ZESG121(:,JI)*ZESG04(:,JJ)+ZR4(:)*ZESG81(:,JI)*ZESG16(:,JJ)+&
                 ZRM3(:)*ZESG256(:,JI)*ZESG09(:,JJ)+2*ZRM(:)*ZESG196(:,JI)*ZESG01(:,JJ))
          
          ZINTERFM(:)=ZKFM(:)*ZRES(:)*ZAPPROX(:)
    
          ZAPPROX(:)=(ZRGI(:))**6*(2.*ZESG144(:,JI)+ZAI(:)*ZKNGI(:)*(ZESG100(:,JI)+&
           ZR2(:)*ZESG64(:,JI)*ZESG04(:,JJ))+ZAJ(:)*ZKNGJ(:)*(ZESG144(:,JI)*ZESG04(:,JJ)+&
           ZRM2(:)*ZESG196(:,JI)*ZESG16(:,JJ))+ZR2(:)*ZESG100(:,JI)*ZESG04(:,JJ)+&
           ZRM2(:)*ZESG196(:,JI)*ZESG04(:,JJ))
    
          ZINTERNC(:)=ZKNC(:)*ZAPPROX(:)
    
          ZINTER(:)=ZINTERNC(:)*(ZINTERFM(:)/(ZINTERNC(:)+ZINTERFM(:)))
    
          PDMINTER(:,NM6(JI))=-PM(:,NM0(JI))*PM(:,NM0(JJ))*ZINTER(:)
          PDMINTER(:,NM6(JJ))=PM(:,NM0(JI))*PM(:,NM0(JJ))*ZINTER(:)
    
          ZAPPROX(:)=sqrt(2.)*sqrt(ZRGI(:))**7*sqrt(ZRGJ(:))**6*(ZESG49(:,JI)*&
               ZESG36(:,JJ)+ZR(:)*ZESG36(:,JI)*ZESG49(:,JJ)+2.*ZR2(:)*ZESG25(:,JI)*&
               ZESG64(:,JJ)+ZR4(:)*ZESG09(:,JI)*ZESG100(:,JJ)+ZRM3(:)*ZESG100(:,JI)*&
               ZESG09(:,JJ)+2.*ZRM(:)*ZESG64(:,JI)*ZESG25(:,JJ))
           
          ZINTERFM(:)=ZKFM(:)*ZRES(:)*ZAPPROX(:)
    
          ZAPPROX(:)=(ZRGI(:))**3*(ZRGJ(:))**3*(2.*ZESG36(:,JI)*ZESG36(:,JJ)+&
           ZAI(:)*ZKNGI(:)*(ZESG16(:,JI)*ZESG16(:,JJ)+ZR2(:)*ZESG04(:,JI)*ZESG64(:,JJ))+&
           ZAJ(:)*ZKNGJ(:)*(ZESG36(:,JI)*ZESG16(:,JJ)+ZRM2(:)*ZESG64(:,JI)*ZESG04(:,JJ))+&
           ZR2(:)*ZESG16(:,JI)*ZESG64(:,JJ)+ZRM2(:)*ZESG64(:,JI)*ZESG16(:,JJ))
    
          ZINTERNC(:)=ZKNC(:)*ZAPPROX(:)
    
          ZINTER(:)=ZINTERNC(:)*(ZINTERFM(:)/(ZINTERNC(:)+ZINTERFM(:)))
           
          PDMINTER(:,NM6(JJ))=PDMINTER(:,NM6(JJ))+2.*PM(:,NM0(JI))*PM(:,NM0(JJ))*ZINTER(:)
     
      enddo
    enddo
    
    END SUBROUTINE CH_AER_COAG