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!MNH_LIC Copyright 2016-2021 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.
!-----------------------------------------------------------------
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! ################################
MODULE MODI_LIMA_MIXRAT_TO_NCONC
! ################################
INTERFACE
SUBROUTINE LIMA_MIXRAT_TO_NCONC(PPABST, PTHT, PRVT, PSVT)
!
REAL, DIMENSION(:,:,:), INTENT(IN) :: PPABST ! Absolute pressure
REAL, DIMENSION(:,:,:), INTENT(IN) :: PTHT ! Potential temperature
REAL, DIMENSION(:,:,:), INTENT(IN) :: PRVT ! Water Vapor mix. ratio
REAL, DIMENSION(:,:,:,:), INTENT(INOUT) :: PSVT ! Mixing ratios IN, conc. OUT
!
END SUBROUTINE LIMA_MIXRAT_TO_NCONC
END INTERFACE
END MODULE MODI_LIMA_MIXRAT_TO_NCONC
!
! ########################################################
SUBROUTINE LIMA_MIXRAT_TO_NCONC(PPABST, PTHT, PRVT, PSVT)
! ########################################################
!
!
!!**** *LIMA_MIXRAT_TO_NCONC* - converts CAMS aerosol mixing ratios into
!! number concentrations
!!
!! PURPOSE
!! -------
!!
!!** METHOD
!! ------
!!
!! EXTERNAL
!! --------
!!
!! IMPLICIT ARGUMENTS
!! ------------------
!!
!! MODIFICATIONS
!! -------------
!! Original 23/01/16 (J.-P. Pinty)
!-------------------------------------------------------------------------------
!
!* 0. DECLARATIONS
!
USE MODD_CST, ONLY : XP00, XMD, XMV, XRD, XCPD, XTT, XPI, XRHOLW, &
XALPW, XBETAW, XGAMW, XALPI, XBETAI, XGAMI
USE MODD_NSV, ONLY : NSV_LIMA_CCN_FREE, NSV_LIMA_IFN_FREE
USE MODD_PARAM_LIMA, ONLY : NMOD_CCN, NMOD_IFN, &
XR_MEAN_CCN, XLOGSIG_CCN, XRHO_CCN, &
XMDIAM_IFN, XSIGMA_IFN, XRHO_IFN, &
NSPECIE, XFRAC, &
CCCN_MODES, CIFN_SPECIES
!
IMPLICIT NONE
!
!* 0.1. Declaration of arguments
! ------------------------
!
REAL, DIMENSION(:,:,:), INTENT(IN) :: PPABST ! Absolute pressure
REAL, DIMENSION(:,:,:), INTENT(IN) :: PTHT ! Potential temperature
REAL, DIMENSION(:,:,:), INTENT(IN) :: PRVT ! Water Vapor mix. ratio
REAL, DIMENSION(:,:,:,:), INTENT(INOUT) :: PSVT ! Mixing ratios IN, conc. OUT
!
!* 0.2 Declaration of local variables
! ------------------------------
!
REAL,DIMENSION(SIZE(PTHT,1),SIZE(PTHT,2),SIZE(PTHT,3)) :: ZT ! Temperature
REAL,DIMENSION(SIZE(PTHT,1),SIZE(PTHT,2),SIZE(PTHT,3)) :: ZREHU ! Relat. Humid.
REAL,DIMENSION(SIZE(PTHT,1),SIZE(PTHT,2),SIZE(PTHT,3)) :: ZGROWTH_FACT
REAL,DIMENSION(SIZE(PTHT,1),SIZE(PTHT,2),SIZE(PTHT,3)) :: ZRHO_CCN_WET
REAL,DIMENSION(SIZE(PTHT,1),SIZE(PTHT,2),SIZE(PTHT,3)) :: ZWORK
!
INTEGER :: JLOC, JCCN, JIFN, JSPECIE
REAL :: ZFACT_CCN, ZFACT_IFN
!
!----------------------------------------------------------------------
!
! Temperature to compute the relative humidity
!
ZT(:,:,:) = PTHT(:,:,:)*(PPABST(:,:,:)/XP00)**(XRD/XCPD)
ZWORK(:,:,:) = PRVT(:,:,:)*PPABST(:,:,:)/((XMV/XMD)+PRVT(:,:,:))
! water vapor partial pressure
ZREHU(:,:,:) = ZWORK(:,:,:)/EXP( XALPW-XBETAW/ZT(:,:,:)-XGAMW*ALOG(ZT(:,:,:)) )
! saturation over water
WHERE ( ZT(:,:,:)<XTT )
ZREHU(:,:,:) = ZWORK(:,:,:)/EXP(XALPI-XBETAI/ZT(:,:,:)-XGAMI*ALOG(ZT(:,:,:)))
! saturation over ice
END WHERE
ZREHU(:,:,:) = MIN( 0.99, MAX( 0.01,ZREHU(:,:,:) ) )
!
! All size distribution parameters are XLOGSIG_CCN and XR_MEAN_CCN (radii)
! Treatment of the soluble aerosols (CCN)
!
! All CAMS aerosol mr are given for dry particles, except for sea-salt (given at Hu=80%)
!
!
!IF( NAERO_TYPE=="CCN" ) THEN
!
! sea-salt, sulfate, hydrophilic (GADS data)
!
! NMOD_CCN=3
IF (.NOT.(ALLOCATED(XR_MEAN_CCN))) ALLOCATE(XR_MEAN_CCN(NMOD_CCN))
IF (.NOT.(ALLOCATED(XLOGSIG_CCN))) ALLOCATE(XLOGSIG_CCN(NMOD_CCN))
IF (.NOT.(ALLOCATED(XRHO_CCN))) ALLOCATE(XRHO_CCN(NMOD_CCN))
IF( CCCN_MODES=='CAMS_ACC') THEN
XR_MEAN_CCN(:) = (/ 0.2E-6 , 0.5E-6 , 0.4E-6 /)
XLOGSIG_CCN(:) = (/ 0.693 , 0.476 , 0.788 /)
XRHO_CCN(:) = (/ 2200. , 1700. , 1800. /)
END IF
!
IF( CCCN_MODES=='CAMS_AIT') THEN
XR_MEAN_CCN(:) = (/ 0.2E-6 , 0.05E-6 , 0.02E-6 /)
XLOGSIG_CCN(:) = (/ 0.693 , 0.693 , 0.788 /)
XRHO_CCN(:) = (/ 2200. , 1700. , 1800. /)
END IF
!
DO JCCN = 1,NMOD_CCN
!
JLOC = NSV_LIMA_CCN_FREE + JCCN-1 ! CCN free then CCN acti
!
ZFACT_CCN = ( (0.75/XPI)*EXP(-4.5*(XLOGSIG_CCN(JCCN))**2) )/XR_MEAN_CCN(JCCN)**3
!
! JCCN=1 is for Sea Salt
! JCCN=2 is for Sulphate
! JCCN=3 is for Hydrophilic OC and BC (sulphate coating)
!
IF( JCCN==1 ) THEN ! Sea salt : convert mass at Hu=80% to dry mass
PSVT(:,:,:,JLOC) = PSVT(:,:,:,JLOC) / 4.302
END IF
!
! compute the CCN number concentration
!
! Pourquoi 0.5* ?
! PSVT(:,:,:,JLOC) =0.5* ZFACT_CCN*(PSVT(:,:,:,JLOC)/XRHO_CCN(JCCN)) ! Result
PSVT(:,:,:,JLOC) = ZFACT_CCN*(PSVT(:,:,:,JLOC)/XRHO_CCN(JCCN)) ! Result
! is in #/Kg of dry air
END DO
!
! All size distribution parameters are XSIGMA_IFN and XMDIAM_IFN (diameters)
! Treatment of the insoluble aerosols (IFN)
!
!ELSE IF( NAERO_TYPE=="IFN" ) THEN
!
! dust, hydrophobic BIO+ORGA (GADS data)
!
! NMOD_IFN=2
NSPECIE=4
IF (.NOT.(ALLOCATED(XMDIAM_IFN))) ALLOCATE(XMDIAM_IFN(NSPECIE))
IF (.NOT.(ALLOCATED(XSIGMA_IFN))) ALLOCATE(XSIGMA_IFN(NSPECIE))
IF (.NOT.(ALLOCATED(XRHO_IFN))) ALLOCATE(XRHO_IFN(NSPECIE))
IF( CIFN_SPECIES=='CAMS_ACC') THEN
XMDIAM_IFN = (/0.8E-6, 3.0E-6, 0.04E-6, 0.8E-6 /)
XSIGMA_IFN = (/2.0, 2.15, 2.0, 2.2 /)
XRHO_IFN = (/2600., 2600., 1000., 2000. /)
END IF
IF( CIFN_SPECIES=='CAMS_AIT') THEN
XMDIAM_IFN = (/0.8E-6, 3.0E-6, 0.04E-6, 0.04E-6/)
XSIGMA_IFN = (/2.0, 2.15, 2.0, 2.2 /)
XRHO_IFN = (/2600., 2600., 1000., 1800./)
END IF
IF (.NOT.(ALLOCATED(XFRAC))) ALLOCATE(XFRAC(NSPECIE,NMOD_IFN))
XFRAC(1,1)=1.0
XFRAC(2,1)=0.0
XFRAC(3,1)=0.0
XFRAC(4,1)=0.0
XFRAC(1,2)=0.0
XFRAC(2,2)=0.0
XFRAC(3,2)=0.0
XFRAC(4,2)=1.0
!
DO JIFN = 1,NMOD_IFN
!
! compute the number concentration assuming no deposition of water
! IFN are considered as insoluble dry aerosols
!
ZFACT_IFN = 0.0
DO JSPECIE = 1,NSPECIE ! Conversion factor is weighted by XFRAC
ZFACT_IFN = ZFACT_IFN + XFRAC(JSPECIE,JIFN)* &
( (6/XPI)*EXP(-(9.0/2.0)*LOG(XSIGMA_IFN(JSPECIE))**2) ) / &
( XRHO_IFN(JSPECIE)*XMDIAM_IFN(JSPECIE)**3 )
END DO
JLOC = NSV_LIMA_IFN_FREE + JIFN-1 ! IFN free then IFN nucl
! Pourquoi 0.5* ?
! PSVT(:,:,:,JLOC) = 0.5* ZFACT_IFN*PSVT(:,:,:,JLOC) ! Result is in #/Kg of dry air
PSVT(:,:,:,JLOC) = ZFACT_IFN*PSVT(:,:,:,JLOC) ! Result is in #/Kg of dry air
END DO
!
END SUBROUTINE LIMA_MIXRAT_TO_NCONC