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!MNH_LIC Copyright 1994-2021 CNRS, Meteo-France and Universite Paul Sabatier
!MNH_LIC This is part of the Meso-NH software governed by the CeCILL-C licence
!MNH_LIC version 1. See LICENSE, CeCILL-C_V1-en.txt and CeCILL-C_V1-fr.txt
!MNH_LIC for details. version 1.
MODULE MODE_ICE4_SLOW
IMPLICIT NONE
CONTAINS
SUBROUTINE ICE4_SLOW(CST, ICEP, ICED, KPROMA, KSIZE, LDSOFT, LDCOMPUTE, PRHODREF, PT, &
&PSSI, PLVFACT, PLSFACT, &
&PRVT, PRCT, PRIT, PRST, PRGT, &
&PLBDAS, PLBDAG, &
&PAI, PCJ, PHLI_HCF, PHLI_HRI,&
&PRCHONI, PRVDEPS, PRIAGGS, PRIAUTS, PRVDEPG)
!!
!!** PURPOSE
!! -------
!! Computes the slow process
!!
!! AUTHOR
!! ------
!! S. Riette from the splitting of rain_ice source code (nov. 2014)
!!
!! MODIFICATIONS
!! -------------
!!
!! R. El Khatib 24-Aug-2021 Optimizations
!
!
!* 0. DECLARATIONS
! ------------
!
USE MODD_CST, ONLY: CST_t
USE MODD_RAIN_ICE_DESCR, ONLY: RAIN_ICE_DESCR_t
USE MODD_RAIN_ICE_PARAM, ONLY: RAIN_ICE_PARAM_t
USE PARKIND1, ONLY : JPRB
USE YOMHOOK , ONLY : LHOOK, DR_HOOK
!
IMPLICIT NONE
!
!* 0.1 Declarations of dummy arguments :
!
TYPE(CST_t), INTENT(IN) :: CST
TYPE(RAIN_ICE_PARAM_t), INTENT(IN) :: ICEP
TYPE(RAIN_ICE_DESCR_t), INTENT(IN) :: ICED
LOGICAL, INTENT(IN) :: LDSOFT
LOGICAL, DIMENSION(KPROMA), INTENT(IN) :: LDCOMPUTE
REAL, DIMENSION(KPROMA), INTENT(IN) :: PRHODREF ! Reference density
REAL, DIMENSION(KPROMA), INTENT(IN) :: PT ! Temperature
REAL, DIMENSION(KPROMA), INTENT(IN) :: PSSI ! Supersaturation over ice
REAL, DIMENSION(KPROMA), INTENT(IN) :: PLVFACT
REAL, DIMENSION(KPROMA), INTENT(IN) :: PLSFACT
REAL, DIMENSION(KPROMA), INTENT(IN) :: PRVT
REAL, DIMENSION(KPROMA), INTENT(IN) :: PRCT ! Cloud water m.r. at t
REAL, DIMENSION(KPROMA), INTENT(IN) :: PRIT ! Pristine ice m.r. at t
REAL, DIMENSION(KPROMA), INTENT(IN) :: PRST ! Snow/aggregate m.r. at t
REAL, DIMENSION(KPROMA), INTENT(IN) :: PRGT ! Graupel/hail m.r. at t
REAL, DIMENSION(KPROMA), INTENT(IN) :: PLBDAS ! Slope parameter of the aggregate distribution
REAL, DIMENSION(KPROMA), INTENT(IN) :: PLBDAG ! Slope parameter of the graupel distribution
REAL, DIMENSION(KPROMA), INTENT(IN) :: PAI ! Thermodynamical function
REAL, DIMENSION(KPROMA), INTENT(IN) :: PCJ ! Function to compute the ventilation coefficient
REAL, DIMENSION(KPROMA), INTENT(IN) :: PHLI_HCF !
REAL, DIMENSION(KPROMA), INTENT(IN) :: PHLI_HRI !
REAL, DIMENSION(KPROMA), INTENT(INOUT) :: PRCHONI ! Homogeneous nucleation
REAL, DIMENSION(KPROMA), INTENT(INOUT) :: PRVDEPS ! Deposition on r_s
REAL, DIMENSION(KPROMA), INTENT(INOUT) :: PRIAGGS ! Aggregation on r_s
REAL, DIMENSION(KPROMA), INTENT(INOUT) :: PRIAUTS ! Autoconversion of r_i for r_s production
REAL, DIMENSION(KPROMA), INTENT(INOUT) :: PRVDEPG ! Deposition on r_g
!
!* 0.2 declaration of local variables
!
REAL(KIND=JPRB) :: ZHOOK_HANDLE
!-------------------------------------------------------------------------------
!
IF (LHOOK) CALL DR_HOOK('ICE4_SLOW', 0, ZHOOK_HANDLE)
!
!-------------------------------------------------------------------------------
!
!
!* 3.2 compute the homogeneous nucleation source: RCHONI
!
DO JL=1, KSIZE
IF(PT(JL)<CST%XTT-35.0 .AND. PRCT(JL)>ICED%XRTMIN(2) .AND. LDCOMPUTE(JL)) THEN
IF(.NOT. LDSOFT) THEN
PRCHONI(JL) = ICEP%XHON*PRHODREF(JL)*PRCT(JL) &
*EXP( ICEP%XALPHA3*(PT(JL)-CST%XTT)-ICEP%XBETA3 )
PRCHONI(JL) = MIN(1000.,ICEP%XHON*PRHODREF(JL)*PRCT(JL) &
*EXP( ICEP%XALPHA3*(PT(JL)-CST%XTT)-ICEP%XBETA3 ))
ENDIF
ELSE
PRCHONI(JL) = 0.
ENDIF
ENDDO
!
!* 3.4 compute the deposition, aggregation and autoconversion sources
!
!
!* 3.4.2 compute the riming-conversion of r_c for r_i production: RCAUTI
!
! ZZW(:) = 0.0
! ZTIMAUTIC = SQRT( ICEP%XTIMAUTI*ICEP%XTIMAUTC )
! WHERE ( (PRCT(:)>0.0) .AND. (PRIT(:)>0.0) .AND. (PRCS(:)>0.0) )
! ZZW(:) = MIN( PRCS(:),ZTIMAUTIC * MAX( SQRT( PRIT(:)*PRCT(:) ),0.0 ) )
! PRIS(:) = PRIS(:) + ZZW(:)
! PRCS(:) = PRCS(:) - ZZW(:)
! PTHS(:) = PTHS(:) + ZZW(:)*(PLSFACT(:)-PLVFACT(:)) ! f(L_f*(RCAUTI))
! END WHERE
!
!* 3.4.3 compute the deposition on r_s: RVDEPS
!
DO JL=1, KSIZE
IF(PRVT(JL)>ICED%XRTMIN(1) .AND. PRST(JL)>ICED%XRTMIN(5) .AND. LDCOMPUTE(JL)) THEN
IF(.NOT. LDSOFT) THEN
PRVDEPS(JL) = ( PSSI(JL)/(PRHODREF(JL)*PAI(JL)) ) * &
( ICEP%X0DEPS*PLBDAS(JL)**ICEP%XEX0DEPS + ICEP%X1DEPS*PCJ(JL)*PLBDAS(JL)**ICEP%XEX1DEPS )
ENDIF
ELSE
PRVDEPS(JL) = 0.
ENDIF
ENDDO
!
!* 3.4.4 compute the aggregation on r_s: RIAGGS
!
DO JL=1, KSIZE
IF(PRIT(JL)>ICED%XRTMIN(4) .AND. PRST(JL)>ICED%XRTMIN(5) .AND. LDCOMPUTE(JL)) THEN
IF(.NOT. LDSOFT) THEN
PRIAGGS(JL) = ICEP%XFIAGGS * EXP( ICEP%XCOLEXIS*(PT(JL)-CST%XTT) ) &
* PRIT(JL) &
* PLBDAS(JL)**ICEP%XEXIAGGS &
* PRHODREF(JL)**(-ICED%XCEXVT)
ENDIF
ELSE
PRIAGGS(JL) = 0.
ENDIF
ENDDO
!
!* 3.4.5 compute the autoconversion of r_i for r_s production: RIAUTS
!
DO JL=1, KSIZE
IF(PHLI_HRI(JL)>ICED%XRTMIN(4) .AND. PHLI_HCF(JL)>1.E-20 .AND. LDCOMPUTE(JL)) THEN
IF(.NOT. LDSOFT) THEN
!ZCRIAUTI(:)=MIN(ICEP%XCRIAUTI,10**(0.06*(PT(:)-CST%XTT)-3.5))
ZCRIAUTI(JL)=MIN(ICEP%XCRIAUTI,10**(ICEP%XACRIAUTI*(PT(JL)-CST%XTT)+ICEP%XBCRIAUTI))
PRIAUTS(JL) = ICEP%XTIMAUTI * EXP( ICEP%XTEXAUTI*(PT(JL)-CST%XTT) ) &
* MAX( PHLI_HRI(JL)/PHLI_HCF(JL)-ZCRIAUTI(JL),0.0 )
PRIAUTS(JL) = PHLI_HCF(JL)*PRIAUTS(JL)
ENDIF
ELSE
PRIAUTS(JL) = 0.
ENDIF
ENDDO
!
!* 3.4.6 compute the deposition on r_g: RVDEPG
!
!
DO JL=1, KSIZE
IF(PRVT(JL)>ICED%XRTMIN(1) .AND. PRGT(JL)>ICED%XRTMIN(6) .AND. LDCOMPUTE(JL)) THEN
IF(.NOT. LDSOFT) THEN
PRVDEPG(JL) = ( PSSI(JL)/(PRHODREF(JL)*PAI(JL)) ) * &
( ICEP%X0DEPG*PLBDAG(JL)**ICEP%XEX0DEPG + ICEP%X1DEPG*PCJ(JL)*PLBDAG(JL)**ICEP%XEX1DEPG )
ENDIF
ELSE
PRVDEPG(JL) = 0.
ENDIF
ENDDO
!
IF (LHOOK) CALL DR_HOOK('ICE4_SLOW', 1, ZHOOK_HANDLE)
!
END SUBROUTINE ICE4_SLOW
END MODULE MODE_ICE4_SLOW