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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_COMPUTE_PDF
IMPLICIT NONE
SUBROUTINE ICE4_COMPUTE_PDF(KSIZE, HSUBG_AUCV_RC, HSUBG_AUCV_RI, HSUBG_PR_PDF, &
PRHODREF, PRCT, PRIT, PCF, PT, PSIGMA_RC,&
PHLC_HCF, PHLC_LCF, PHLC_HRC, PHLC_LRC, &
PHLI_HCF, PHLI_LCF, PHLI_HRI, PHLI_LRI, PRF)
!!
!!** PURPOSE
!! -------
!! Computes the pdf used to split cloud into high and low content parts
!!
!! AUTHOR
!! ------
!! S. Riette from the plitting of rain_ice source code (nov. 2014)
!!
!! MODIFICATIONS
!! -------------
!!
!
!
!* 0. DECLARATIONS
! ------------
!
!
USE PARKIND1, ONLY : JPRB
USE YOMHOOK , ONLY : LHOOK, DR_HOOK
USE MODD_RAIN_ICE_DESCR, ONLY: XRTMIN
USE MODD_RAIN_ICE_PARAM, ONLY: XCRIAUTC, XBCRIAUTI, XACRIAUTI, XCRIAUTI
USE MODD_CST, ONLY : XTT
!
USE MODE_MSG
!
IMPLICIT NONE
!
!* 0.1 Declarations of dummy arguments :
!
INTEGER, INTENT(IN) :: KSIZE
CHARACTER(LEN=4), INTENT(IN) :: HSUBG_AUCV_RC ! Kind of Subgrid autoconversion method for cloud water
CHARACTER(LEN=80), INTENT(IN) :: HSUBG_AUCV_RI ! Kind of Subgrid autoconversion method for cloud ice
CHARACTER(LEN=80), INTENT(IN) :: HSUBG_PR_PDF ! pdf for subgrid precipitation
REAL, DIMENSION(KSIZE), INTENT(IN) :: PRHODREF ! Reference density
REAL, DIMENSION(KSIZE), INTENT(IN) :: PRCT ! Cloud water m.r. at t
REAL, DIMENSION(KSIZE), INTENT(IN) :: PRIT ! Ice Crystal m.r. at t
REAL, DIMENSION(KSIZE), INTENT(IN) :: PCF ! Cloud fraction
REAL, DIMENSION(KSIZE), INTENT(IN) :: PT ! Temperature
REAL, DIMENSION(KSIZE), INTENT(IN) :: PSIGMA_RC ! Standard deviation of rc at time t
!Note for INTENT STATUS: in 'ADJU' case the PHL?_??? variables must be able to "cross" the subroutine untouched
REAL, DIMENSION(KSIZE), INTENT(INOUT) :: PHLC_HCF ! HLCLOUDS : fraction of High Cloud Fraction in grid
REAL, DIMENSION(KSIZE), INTENT(INOUT) :: PHLC_LCF ! HLCLOUDS : fraction of Low Cloud Fraction in grid
! note that PCF = PHLC_HCF + PHLC_LCF
REAL, DIMENSION(KSIZE), INTENT(INOUT) :: PHLC_HRC ! HLCLOUDS : LWC that is High LWC in grid
REAL, DIMENSION(KSIZE), INTENT(INOUT) :: PHLC_LRC ! HLCLOUDS : LWC that is Low LWC in grid
! note that PRC = PHLC_HRC + PHLC_LRC
REAL, DIMENSION(KSIZE), INTENT(INOUT) :: PHLI_HCF
REAL, DIMENSION(KSIZE), INTENT(INOUT) :: PHLI_LCF
REAL, DIMENSION(KSIZE), INTENT(INOUT) :: PHLI_HRI
REAL, DIMENSION(KSIZE), INTENT(INOUT) :: PHLI_LRI
REAL, DIMENSION(KSIZE), INTENT(OUT) :: PRF ! Rain fraction
!
!* 0.2 declaration of local variables
!
REAL, DIMENSION(KSIZE) :: ZRCRAUTC, & !RC value to begin rain formation =XCRIAUTC/RHODREF
ZCRIAUTI, & !RI value to begin snow formation
ZHLC_RCMAX, & !HLCLOUDS : maximum value for RC in distribution
ZHLC_LRCLOCAL, & !HLCLOUDS : LWC that is Low LWC local in LCF
ZHLC_HRCLOCAL, & !HLCLOUDS : LWC that is High LWC local in HCF
! note that ZRC/CF = ZHLC_HRCLOCAL+ ZHLC_LRCLOCAL
! = PHLC_HRC/HCF+ PHLC_LRC/LCF
ZSUMRC, ZSUMRI
REAL :: ZCOEFFRCM
REAL(KIND=JPRB) :: ZHOOK_HANDLE
!-------------------------------------------------------------------------------
!
IF (LHOOK) CALL DR_HOOK('ICE4_COMPUTE_PDF', 0, ZHOOK_HANDLE)!
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!Cloud water split between high and low content part is done according to autoconversion option
ZRCRAUTC(:)=XCRIAUTC/PRHODREF(:) ! Autoconversion rc threshold
IF(HSUBG_AUCV_RC=='NONE') THEN
!Cloud water is entirely in low or high part
WHERE(PRCT(:)>ZRCRAUTC(:))
PHLC_HCF(:)=1.
PHLC_LCF(:)=0.
PHLC_HRC(:)=PRCT(:)
PHLC_LRC(:)=0.
ELSEWHERE(PRCT(:)>XRTMIN(2))
PHLC_HCF(:)=0.
PHLC_LCF(:)=1.
PHLC_HRC(:)=0.
PHLC_LRC(:)=PRCT(:)
ELSEWHERE
PHLC_HCF(:)=0.
PHLC_LCF(:)=0.
PHLC_HRC(:)=0.
PHLC_LRC(:)=0.
END WHERE
ELSEIF(HSUBG_AUCV_RC=='CLFR') THEN
!Cloud water is only in the cloudy part and entirely in low or high part
WHERE(PCF(:)>0. .AND. PRCT(:)>ZRCRAUTC(:)*PCF(:))
PHLC_HCF(:)=PCF(:)
PHLC_LCF(:)=0.
PHLC_HRC(:)=PRCT(:)
PHLC_LRC(:)=0.
ELSEWHERE(PCF(:)>0. .AND. PRCT(:)>XRTMIN(2))
PHLC_HCF(:)=0.
PHLC_LCF(:)=PCF(:)
PHLC_HRC(:)=0.0
PHLC_LRC(:)=PRCT(:)
ELSEWHERE
PHLC_HCF(:)=0.
PHLC_LCF(:)=0.
PHLC_HRC(:)=0.
PHLC_LRC(:)=0.
END WHERE
ELSEIF(HSUBG_AUCV_RC=='ADJU') THEN
ZSUMRC(:)=PHLC_LRC(:)+PHLC_HRC(:)
WHERE(ZSUMRC .GT. 0.)
PHLC_LRC(:)=PHLC_LRC(:)*PRCT(:)/ZSUMRC(:)
PHLC_HRC(:)=PHLC_HRC(:)*PRCT(:)/ZSUMRC(:)
ELSEWHERE
PHLC_LRC(:)=0.
PHLC_HRC(:)=0.
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ELSEIF(HSUBG_AUCV_RC=='PDF ') THEN
!Cloud water is split between high and low part according to a PDF
! 'HLCRECTPDF' : rectangular PDF form
! 'HLCTRIANGPDF' : triangular PDF form
! 'HLCQUADRAPDF' : second order quadratic PDF form
! 'HLCISOTRIPDF' : isocele triangular PDF
! 'SIGM' : Redelsperger and Sommeria (1986)
IF(HSUBG_PR_PDF=='SIGM') THEN
! Redelsperger and Sommeria (1986) but organised according to Turner (2011, 2012)
WHERE (PRCT(:)>ZRCRAUTC(:)+PSIGMA_RC(:))
PHLC_HCF(:)=1.
PHLC_LCF(:)=0.
PHLC_HRC(:)=PRCT(:)
PHLC_LRC(:)=0.
ELSEWHERE(PRCT(:)> (ZRCRAUTC(:)-PSIGMA_RC(:)) .AND. &
& PRCT(:)<=(ZRCRAUTC(:)+PSIGMA_RC(:)) )
PHLC_HCF(:)=(PRCT(:)+PSIGMA_RC(:)-ZRCRAUTC(:))/ &
&(2.*PSIGMA_RC(:))
PHLC_LCF(:)=MAX(0., PCF(:)-PHLC_HCF(:))
PHLC_HRC(:)=(PRCT(:)+PSIGMA_RC(:)-ZRCRAUTC(:))* &
&(PRCT(:)+PSIGMA_RC(:)+ZRCRAUTC(:))/ &
&(4.*PSIGMA_RC(:))
PHLC_LRC(:)=MAX(0., PRCT(:)-PHLC_HRC(:))
ELSEWHERE(PRCT(:)>XRTMIN(2) .AND. PCF(:)>0.)
PHLC_HCF(:)=0.
PHLC_LCF(:)=PCF(:)
PHLC_HRC(:)=0.
PHLC_LRC(:)=PRCT(:)
ELSEWHERE
PHLC_HCF(:)=0.
PHLC_LCF(:)=0.
PHLC_HRC(:)=0.
PHLC_LRC(:)=0.
END WHERE
! Turner (2011, 2012)
ELSEIF(HSUBG_PR_PDF=='HLCRECTPDF' .OR. HSUBG_PR_PDF=='HLCISOTRIPDF' .OR. &
&HSUBG_PR_PDF=='HLCTRIANGPDF' .OR. HSUBG_PR_PDF=='HLCQUADRAPDF') THEN
! Calculate maximum value r_cM from PDF forms
IF(HSUBG_PR_PDF=='HLCRECTPDF' .OR. HSUBG_PR_PDF=='HLCISOTRIPDF') THEN
ZCOEFFRCM=2.
ELSE IF(HSUBG_PR_PDF=='HLCTRIANGPDF') THEN
ZCOEFFRCM=3.
ELSE IF(HSUBG_PR_PDF=='HLCQUADRAPDF') THEN
ZCOEFFRCM=4.
END IF
WHERE(PRCT(:).GT.0. .AND. PCF(:).GT.0.)
ZHLC_RCMAX(:)=ZCOEFFRCM*PRCT(:)/PCF(:)
END WHERE
! Split available water and cloud fraction in two parts
! Calculate local mean values int he low and high parts for the 3 PDF forms:
IF(HSUBG_PR_PDF=='HLCRECTPDF') THEN
WHERE(PRCT(:).GT.0. .AND. PCF(:).GT.0. .AND. ZHLC_RCMAX(:).GT.ZRCRAUTC(:))
ZHLC_LRCLOCAL(:)=0.5*ZRCRAUTC(:)
ZHLC_HRCLOCAL(:)=( ZHLC_RCMAX(:) + ZRCRAUTC(:))/2.0
END WHERE
ELSE IF(HSUBG_PR_PDF=='HLCTRIANGPDF') THEN
WHERE(PRCT(:).GT.0. .AND. PCF(:).GT.0. .AND. ZHLC_RCMAX(:).GT.ZRCRAUTC(:))
ZHLC_LRCLOCAL(:)=( ZRCRAUTC(:) *(3.0 * ZHLC_RCMAX(:) - 2.0 * ZRCRAUTC(:) ) ) &
/ (3.0 * (2.0 * ZHLC_RCMAX(:) - ZRCRAUTC(:) ) )
ZHLC_HRCLOCAL(:)=(ZHLC_RCMAX(:) + 2.0*ZRCRAUTC(:)) / 3.0
END WHERE
ELSE IF(HSUBG_PR_PDF=='HLCQUADRAPDF') THEN
WHERE(PRCT(:).GT.0. .AND. PCF(:).GT.0. .AND. ZHLC_RCMAX(:).GT.ZRCRAUTC(:))
ZHLC_LRCLOCAL(:)=(3.0 *ZRCRAUTC(:)**3 - 8.0 *ZRCRAUTC(:)**2 * ZHLC_RCMAX(:) &
+ 6.0*ZRCRAUTC(:) *ZHLC_RCMAX(:)**2 ) &
/ &
(4.0* ZRCRAUTC(:)**2 -12.0*ZRCRAUTC(:) *ZHLC_RCMAX(:) &
+ 12.0 * ZHLC_RCMAX(:)**2 )
ZHLC_HRCLOCAL(:)=(ZHLC_RCMAX(:) + 3.0*ZRCRAUTC(:))/4.0
END WHERE
ELSE IF(HSUBG_PR_PDF=='HLCISOTRIPDF') THEN
WHERE(PRCT(:).GT.0. .AND. PCF(:).GT.0. .AND. ZHLC_RCMAX(:).GT.ZRCRAUTC(:))
WHERE((PRCT(:) / PCF(:)).LE.ZRCRAUTC(:))
ZHLC_LRCLOCAL(:)=( (ZHLC_RCMAX(:))**3 &
-(12.0 * (ZHLC_RCMAX(:))*(ZRCRAUTC(:))**2) &
+(8.0 * ZRCRAUTC(:)**3) ) &
/( (6.0 * (ZHLC_RCMAX(:))**2) &
-(24.0 * (ZHLC_RCMAX(:)) * ZRCRAUTC(:)) &
+(12.0 * ZRCRAUTC(:)**2) )
ZHLC_HRCLOCAL(:)=( ZHLC_RCMAX(:) + 2.0 * ZRCRAUTC(:) )/3.0
ELSEWHERE
ZHLC_LRCLOCAL(:)=(2.0/3.0) * ZRCRAUTC(:)
ZHLC_HRCLOCAL(:)=(3.0*ZHLC_RCMAX(:)**3 - 8.0*ZRCRAUTC(:)**3) &
/ (6.0 * ZHLC_RCMAX(:)**2 - 12.0*ZRCRAUTC(:)**2)
END WHERE
END WHERE
END IF
! Compare r_cM to r_cR to know if cloud water content is high enough to split in two parts or not
WHERE (PRCT(:).GT.0. .AND. PCF(:).GT.0. .AND. ZHLC_RCMAX(:).GT.ZRCRAUTC(:))
! Calculate final values for LCF and HCF:
PHLC_LCF(:)=PCF(:) &
*(ZHLC_HRCLOCAL- &
(PRCT(:) / PCF(:))) &
/ (ZHLC_HRCLOCAL-ZHLC_LRCLOCAL)
PHLC_HCF(:)=MAX(0., PCF(:)-PHLC_LCF(:))
!
! Calculate final values for LRC and HRC:
PHLC_LRC(:)=ZHLC_LRCLOCAL*PHLC_LCF(:)
PHLC_HRC(:)=MAX(0., PRCT(:)-PHLC_LRC(:))
ELSEWHERE (PRCT(:).GT.0. .AND. PCF(:).GT.0. .AND. ZHLC_RCMAX(:).LE.ZRCRAUTC(:))
! Put all available cloud water and his fraction in the low part
PHLC_LCF(:)=PCF(:)
PHLC_HCF(:)=0.
PHLC_LRC(:)=PRCT(:)
PHLC_HRC(:)=0.
ELSEWHERE
PHLC_LCF(:)=0.
PHLC_HCF(:)=0.
PHLC_LRC(:)=0.
PHLC_HRC(:)=0.
END WHERE
ELSE
CALL PRINT_MSG(NVERB_FATAL,'GEN','ICE4_COMPUTE_PDF','wrong HSUBG_PR_PDF case')
ENDIF
ELSE
CALL PRINT_MSG(NVERB_FATAL,'GEN','ICE4_COMPUTE_PDF','wrong HSUBG_AUCV case')
ENDIF
!
!Ice water split between high and low content part is done according to autoconversion option
ZCRIAUTI(:)=MIN(XCRIAUTI,10**(XACRIAUTI*(PT(:)-XTT)+XBCRIAUTI)) ! Autoconversion ri threshold
IF(HSUBG_AUCV_RI=='NONE') THEN
RIETTE Sébastien
committed
!La raison de la non reproduction n'est pas comprise avec certitude
!Il faudra vérifier que le code fait toujours ce qui est attendu
!une fois tous les éléments assemblés
#ifdef REPRO48
PHLI_HCF(:)=1.
PHLI_LCF(:)=0.
PHLI_HRI(:)=PRIT(:)
PHLI_LRI(:)=0.
#else
!Cloud water is entirely in low or high part
WHERE(PRIT(:)>ZCRIAUTI(:))
PHLI_HCF(:)=1.
PHLI_LCF(:)=0.
PHLI_HRI(:)=PRIT(:)
PHLI_LRI(:)=0.
RIETTE Sébastien
committed
ELSEWHERE(PRIT(:)>XRTMIN(4))
PHLI_HCF(:)=0.
PHLI_LCF(:)=1.
PHLI_HRI(:)=0.
PHLI_LRI(:)=PRIT(:)
ELSEWHERE
PHLI_HCF(:)=0.
PHLI_LCF(:)=0.
PHLI_HRI(:)=0.
PHLI_LRI(:)=0.
END WHERE
RIETTE Sébastien
committed
#endif
ELSEIF(HSUBG_AUCV_RI=='CLFR') THEN
!Cloud water is only in the cloudy part and entirely in low or high part
WHERE(PCF(:)>0. .AND. PRIT(:)>ZCRIAUTI(:)*PCF(:))
PHLI_HCF(:)=PCF(:)
PHLI_LCF(:)=0.
PHLI_HRI(:)=PRIT(:)
PHLI_LRI(:)=0.
RIETTE Sébastien
committed
ELSEWHERE(PCF(:)>0. .AND. PRIT(:)>XRTMIN(4))
PHLI_HCF(:)=0.
PHLI_LCF(:)=PCF(:)
PHLI_HRI(:)=0.0
PHLI_LRI(:)=PRIT(:)
ELSEWHERE
PHLI_HCF(:)=0.
PHLI_LCF(:)=0.
PHLI_HRI(:)=0.
PHLI_LRI(:)=0.
END WHERE
ELSEIF(HSUBG_AUCV_RI=='ADJU') THEN
ZSUMRI(:)=PHLI_LRI(:)+PHLI_HRI(:)
WHERE(ZSUMRI .GT. 0.)
PHLI_LRI(:)=PHLI_LRI(:)*PRIT(:)/ZSUMRI(:)
PHLI_HRI(:)=PHLI_HRI(:)*PRIT(:)/ZSUMRI(:)
ELSEWHERE
PHLI_LRI(:)=0.
PHLI_HRI(:)=0.
ENDWHERE
ELSE
!wrong HSUBG_AUCV_RI case
CALL PRINT_MSG( NVERB_FATAL, 'GEN', 'ICE4_COMPUTE_PDF', 'wrong HSUBG_AUCV_RI case' )
ENDIF
!
#ifdef REPRO48
PRF=PHLC_HCF
#else
PRF=MAX(PHLC_HCF,PHLI_HCF)
IF (LHOOK) CALL DR_HOOK('ICE4_COMPUTE_PDF', 1, ZHOOK_HANDLE)
END SUBROUTINE ICE4_COMPUTE_PDF
END MODULE MODE_ICE4_COMPUTE_PDF