! $Id: lmdz_cloud_optics_prop.f90 5828 2025-09-23 14:32:02Z rkazeroni $ MODULE lmdz_cloud_optics_prop PRIVATE LOGICAL, SAVE :: first_first = .TRUE. !$OMP THREADPRIVATE(first_first) PUBLIC cloud_optics_prop, cloud_optics_prop_post CONTAINS SUBROUTINE cloud_optics_prop_post() USE lmdz_cloud_optics_prop_ini, ONLY: novlp USE lmdz_cloud_optics_prop_ini, ONLY: first IMPLICIT NONE IF (first_first) THEN IF (ANY(first)) THEN IF (novlp==1) THEN WRITE (*, *) 'Hypothese de recouvrement: MAXIMUM_ & & & & RANDOM' first_first = .FALSE. ELSEIF (novlp==2) THEN WRITE (*, *) 'Hypothese de recouvrement: MAXIMUM' first_first = .FALSE. ELSEIF (novlp==3) THEN WRITE (*, *) 'Hypothese de recouvrement: RANDOM' first_first = .FALSE. ENDIF ENDIF ENDIF END SUBROUTINE cloud_optics_prop_post SUBROUTINE cloud_optics_prop(klon, klev, paprs, pplay, temp, radocond, picefra, pclc, & pcltau, pclemi, pch, pcl, pcm, pct, radocondwp, xflwp, xfiwp, xflwc, xfiwc, & mass_solu_aero, mass_solu_aero_pi, pcldtaupi, distcltop, temp_cltop, re, fl, reliq, reice, & reliq_pi, reice_pi, scdnc, cldncl, reffclwtop, lcc, reffclws, & reffclwc, cldnvi, lcc3d, lcc3dcon, lcc3dstra, icc3dcon, icc3dstra, & icefrac_optics, dNovrN, ptconv,rnebcon, ccwcon) USE lmdz_cloud_optics_prop_ini , ONLY : flag_aerosol, ok_cdnc USE lmdz_cloud_optics_prop_ini , ONLY : lunout USE lmdz_cloud_optics_prop_ini , ONLY : bl95_b0, bl95_b1 USE lmdz_cloud_optics_prop_ini , ONLY : latitude_deg USE lmdz_cloud_optics_prop_ini , ONLY : iflag_t_glace USE lmdz_cloud_optics_prop_ini , ONLY : cdnc_max, cdnc_max_m3 USE lmdz_cloud_optics_prop_ini , ONLY : cdnc_min, cdnc_min_m3 USE lmdz_cloud_optics_prop_ini , ONLY : thres_tau, thres_neb USE lmdz_cloud_optics_prop_ini , ONLY : prmhc, prlmc USE lmdz_cloud_optics_prop_ini , ONLY : coef_froi, coef_chau USE lmdz_cloud_optics_prop_ini , ONLY : seuil_neb USE lmdz_cloud_optics_prop_ini , ONLY : t_glace_min_old, t_glace_max_old USE lmdz_cloud_optics_prop_ini , ONLY : k_ice0, df USE lmdz_cloud_optics_prop_ini , ONLY : rg, rd, rpi USE lmdz_cloud_optics_prop_ini , ONLY : rad_chau1, rad_chau2, iflag_rei USE lmdz_cloud_optics_prop_ini , ONLY : ok_icefra_lscp, rei_max, rei_min USE lmdz_cloud_optics_prop_ini , ONLY : rei_coef, rei_min_temp USE lmdz_cloud_optics_prop_ini , ONLY : zepsec, novlp, iflag_ice_thermo, ok_new_lscp USE lmdz_cloud_optics_prop_ini , ONLY : first IMPLICIT NONE ! ====================================================================== ! Authors: Z.X. Li (LMD/CNRS) date: 19930910 ! O.Boucher (LMD/CNRS) mise a jour en 201212 ! I. Musat (LMD/CNRS) : prise en compte de la meme hypothese ! de recouvrement pour les nuages que pour ! le rayonnement rrtm via le parametre ! novlp de radopt.h : 20160721 ! L.Fairheard, E.Vignon, JB Madeleine, L. Raillard, A. Idelkadi ! M. Coulon-Decorzens: replayisation of the routine + cleaning ! and commentaries ! ! Aim: compute condensate optical properties, ! cloud optical depth and emissivity ! ====================================================================== ! List of arguments !------------------ ! input: INTEGER, INTENT(IN) :: klon, klev ! number of horizontal and vertical grid points REAL, INTENT(IN) :: paprs(klon, klev+1)! pressure at bottom interfaces [Pa] REAL, INTENT(IN) :: pplay(klon, klev) ! pressure at the middle of layers [Pa] REAL, INTENT(IN) :: temp(klon, klev) ! temperature [K] REAL, INTENT(IN) :: radocond(klon, klev) ! cloud condensed water seen by radiation [kg/kg] REAL, INTENT(IN) :: picefra(klon,klev) ! ice fraction in clouds from large scale condensation scheme [-] REAL, INTENT(IN) :: rnebcon(klon,klev) ! convection cloud fraction [-] REAL, INTENT(IN) :: ccwcon(klon,klev) ! condensed water from deep convection [kg/kg] ! jq for the aerosol indirect effect ! jq introduced by Johannes Quaas (quaas@lmd.jussieu.fr), 27/11/2003 REAL, INTENT(IN) :: mass_solu_aero(klon, klev) ! total mass concentration for all soluble aerosols [ug m-3] REAL, INTENT(IN) :: mass_solu_aero_pi(klon, klev) ! - (pre-industrial value) REAL, INTENT(IN) :: dNovrN(klon) ! enhancement factor for cdnc REAL, INTENT(OUT) :: distcltop(klon,klev) ! distance from large scale cloud top [m] REAL, INTENT(OUT) :: temp_cltop(klon,klev)!temperature at large scale cloud top [K] LOGICAL, INTENT(IN) :: ptconv(klon, klev) ! flag for grid points affected by deep convection ! inout: REAL, INTENT(INOUT) :: pclc(klon, klev) ! cloud fraction for radiation [-] ! out: REAL, INTENT(OUT) :: pct(klon) ! 2D total cloud cover [-] REAL, INTENT(OUT) :: pcl(klon) ! 2D low cloud cover [-] REAL, INTENT(OUT) :: pcm(klon) ! 2D mid cloud cover [-] REAL, INTENT(OUT) :: pch(klon) ! 2D high cloud cover [-] REAL, INTENT(OUT) :: radocondwp(klon) ! total condensed water path (seen by radiation) [kg/m2] REAL, INTENT(OUT) :: xflwp(klon) ! liquid water path (seen by radiation) [kg/m2] REAL, INTENT(OUT) :: xfiwp(klon) ! ice water path (seen by radiation) [kg/m2] REAL, INTENT(OUT) :: xflwc(klon, klev) ! liquid water content seen by radiation [kg/kg] REAL, INTENT(OUT) :: xfiwc(klon, klev) ! ice water content seen by radiation [kg/kg] REAL, INTENT(OUT) :: re(klon, klev) ! cloud droplet effective radius multiplied by fl REAL, INTENT(OUT) :: fl(klon, klev) ! xliq * rneb, denominator to re; fraction of liquid water clouds ! introduced to avoid problems in the averaging of the output ! water clouds within a grid cell REAL, INTENT(OUT) :: pcltau(klon, klev) ! cloud optical depth [m] REAL, INTENT(OUT) :: pclemi(klon, klev) ! cloud emissivity [-] REAL, INTENT(OUT) :: pcldtaupi(klon, klev) ! pre-industrial value of cloud optical thickness, ie. ! values of optical thickness that does not account ! for aerosol effects on cloud droplet radius [m] REAL, INTENT(OUT) :: reliq(klon, klev) ! liquid droplet effective radius [m] REAL, INTENT(OUT) :: reice(klon, klev) ! ice effective radius [m] REAL, INTENT(OUT) :: reliq_pi(klon, klev)! liquid droplet effective radius [m], pre-industrial REAL, INTENT(OUT) :: reice_pi(klon, klev)! ice effective radius [m], pre-industrial REAL, INTENT(OUT) :: scdnc(klon, klev) ! cloud droplet number concentration, mean over the whole mesh [m-3] REAL, INTENT(OUT) :: cldncl(klon) ! cloud droplet number concentration at top of cloud [m-3] REAL, INTENT(OUT) :: reffclwtop(klon) ! effective radius of cloud droplet at top of cloud [m] REAL, INTENT(OUT) :: lcc(klon) ! liquid Cloud Content at top of cloud [kg/kg] REAL, INTENT(OUT) :: reffclws(klon, klev)! stratiform cloud droplet effective radius REAL, INTENT(OUT) :: reffclwc(klon, klev)! convective cloud droplet effective radius REAL, INTENT(OUT) :: cldnvi(klon) ! column Integrated cloud droplet Number [/m2] REAL, INTENT(OUT) :: lcc3d(klon, klev) ! cloud fraction for liquid part only [-] REAL, INTENT(OUT) :: lcc3dcon(klon, klev)! cloud fraction for liquid part only, convective clouds [-] REAL, INTENT(OUT) :: lcc3dstra(klon, klev)!cloud fraction for liquid part only, stratiform clouds [-] REAL, INTENT(OUT) :: icc3dcon(klon, klev)! cloud fraction for liquid part only, convective clouds [-] REAL, INTENT(OUT) :: icc3dstra(klon, klev)! cloud fraction for ice part only, stratiform clouds [-] REAL, INTENT(INOUT) :: icefrac_optics(klon, klev)! ice fraction in clouds seen by radiation [-] ! Local variables !---------------- INTEGER flag_max ! threshold PARAMETERs REAL phase3d(klon, klev) REAL tcc(klon), ftmp(klon), lcc_integrat(klon), height(klon) LOGICAL lo INTEGER i, k REAL radius REAL rel, tc, rei, iwc, dei, deimin, deimax REAL k_ice ! jq for the aerosol indirect effect ! jq introduced by Johannes Quaas (quaas@lmd.jussieu.fr), 27/11/2003 REAL cdnc(klon, klev) ! cloud droplet number concentration [m-3] REAL cdnc_pi(klon, klev) ! cloud droplet number concentration [m-3] (pi value) REAL re_pi(klon, klev) ! cloud droplet effective radius [um] (pi value) ! IM cf. CR:parametres supplementaires REAL dzfice(klon,klev) REAL zclear(klon) REAL zcloud(klon) REAL zcloudh(klon) REAL zcloudm(klon) REAL zcloudl(klon) REAL rhodz(klon, klev) !--rho*dz pour la couche REAL zrho(klon, klev) !--rho pour la couche REAL dh(klon, klev) !--dz pour la couche REAL rad_chaud(klon, klev) !--rayon pour les nuages chauds REAL rad_chaud_pi(klon, klev) !--rayon pour les nuages chauds pre-industriels REAL zflwp_var, zfiwp_var REAL d_rei_dt ! FH : 2011/05/24 ! rei = ( rei_max - rei_min ) * T(°C) / 81.4 + rei_max ! to be used for a temperature in celcius T(°C) < 0 ! rei=rei_min for T(°C) < -81.4 ! Calcul de la pente de la relation entre rayon effective des cristaux ! et la température Pour retrouver les résultats numériques de la version d'origine, ! on impose 0.71 quand on est proche de 0.71 d_rei_dt = (rei_max-rei_min)/81.4 IF (abs(d_rei_dt-0.71)<1.E-4) d_rei_dt = 0.71 ! Calculer l'epaisseur optique et l'emmissivite des nuages ! IM inversion des DO xflwp = 0.D0 xfiwp = 0.D0 xflwc = 0.D0 xfiwc = 0.D0 reliq = 0. reice = 0. reliq_pi = 0. reice_pi = 0. IF ((.NOT. ok_new_lscp) .AND. iflag_t_glace.EQ.0) THEN DO k = 1, klev DO i = 1, klon ! -layer calculation rhodz(i, k) = (paprs(i,k)-paprs(i,k+1))/rg ! kg/m2 zrho(i, k) = pplay(i, k)/temp(i, k)/rd ! kg/m3 dh(i, k) = rhodz(i, k)/zrho(i, k) ! m ! -Fraction of ice in cloud using a linear transition icefrac_optics(i, k) = 1.0 - (temp(i,k)-t_glace_min_old)/(t_glace_max_old-t_glace_min_old) icefrac_optics(i, k) = min(max(icefrac_optics(i,k),0.0), 1.0) ! -IM Total Liquid/Ice water content xflwc(i, k) = (1.-icefrac_optics(i,k))*radocond(i, k) xfiwc(i, k) = icefrac_optics(i, k)*radocond(i, k) ENDDO ENDDO ELSE ! of IF (iflag_t_glace.EQ.0) DO k = 1, klev !!$ IF (ok_new_lscp) THEN !!$ CALL icefrac_lscp(klon,temp(:,k),iflag_ice_thermo,distcltop(:,k),temp_cltop(:,k),icefrac_optics(:,k),dzfice(:,k)) !!$ ELSE !!$ CALL icefrac_lsc(klon,temp(:,k),pplay(:,k)/paprs(:,1),icefrac_optics(:,k)) !!$ ENDIF DO i = 1, klon IF ((.NOT. ptconv(i,k)) .AND. ok_new_lscp .AND. ok_icefra_lscp) THEN ! EV: take the ice fraction directly from the lscp code ! consistent only for non convective grid points ! critical for mixed phase clouds icefrac_optics(i,k)=picefra(i,k) ENDIF ! -layer calculation rhodz(i, k) = (paprs(i,k)-paprs(i,k+1))/rg ! kg/m2 zrho(i, k) = pplay(i, k)/temp(i, k)/rd ! kg/m3 dh(i, k) = rhodz(i, k)/zrho(i, k) ! m ! -IM Total Liquid/Ice water content xflwc(i, k) = (1.-icefrac_optics(i,k))*radocond(i, k) xfiwc(i, k) = icefrac_optics(i, k)*radocond(i, k) ENDDO ENDDO ENDIF IF (ok_cdnc) THEN ! --we compute cloud properties as a function of the aerosol load DO k = 1, klev DO i = 1, klon ! Formula "D" of Boucher and Lohmann, Tellus, 1995 ! Cloud droplet number concentration (CDNC) is restricted ! to be within [20, 1000 cm^3] ! --pre-industrial case cdnc_pi(i, k) = 10.**(bl95_b0+bl95_b1*log(max(mass_solu_aero_pi(i,k), & 1.E-4))/log(10.))*1.E6 !-m-3 cdnc_pi(i, k) = min(cdnc_max_m3, max(cdnc_min_m3,cdnc_pi(i,k))) ENDDO ENDDO !--flag_aerosol=7 => MACv2SP climatology !--in this case there is an enhancement factor IF (flag_aerosol .EQ. 7) THEN !--present-day DO k = 1, klev DO i = 1, klon cdnc(i, k) = cdnc_pi(i,k)*dNovrN(i) ENDDO ENDDO !--standard case ELSE DO k = 1, klev DO i = 1, klon ! Formula "D" of Boucher and Lohmann, Tellus, 1995 ! Cloud droplet number concentration (CDNC) is restricted ! to be within [20, 1000 cm^3] ! --present-day case cdnc(i, k) = 10.**(bl95_b0+bl95_b1*log(max(mass_solu_aero(i,k), & 1.E-4))/log(10.))*1.E6 !-m-3 cdnc(i, k) = min(cdnc_max_m3, max(cdnc_min_m3,cdnc(i,k))) ENDDO ENDDO ENDIF !--flag_aerosol !--computing cloud droplet size DO k = 1, klev DO i = 1, klon ! --present-day case rad_chaud(i, k) = 1.1*((radocond(i,k)*pplay(i, & k)/(rd*temp(i,k)))/(4./3*rpi*1000.*cdnc(i,k)))**(1./3.) rad_chaud(i, k) = max(rad_chaud(i,k)*1.E6, 5.) ! --pre-industrial case rad_chaud_pi(i, k) = 1.1*((radocond(i,k)*pplay(i, & k)/(rd*temp(i,k)))/(4./3.*rpi*1000.*cdnc_pi(i,k)))**(1./3.) rad_chaud_pi(i, k) = max(rad_chaud_pi(i,k)*1.E6, 5.) ! --pre-industrial case ! --liquid/ice cloud water paths: IF (pclc(i,k)<=seuil_neb) THEN pcldtaupi(i, k) = 0.0 ELSE zflwp_var = 1000.*(1.-icefrac_optics(i,k))*radocond(i, k)/pclc(i, k)* & rhodz(i, k) zfiwp_var = 1000.*icefrac_optics(i, k)*radocond(i, k)/pclc(i, k)*rhodz(i, k) ! Calculation of ice cloud effective radius in micron IF (iflag_rei .EQ. 2) THEN ! in-cloud ice water content in g/m3 iwc = icefrac_optics(i,k) * radocond(i,k) / pclc(i,k) * zrho(i,k) * 1000. ! this formula is a simplified version of the Sun 2001 one (as in the IFS model, ! and which is activated for iflag_rei = 1). ! In particular, the term in temperature**2 has been simplified. ! The new coefs are tunable, and are by default set so that the results fit well ! to the Sun 2001 formula ! By default, rei_coef = 2.4 and rei_min_temp = 175. ! The ranges of these parameters are determined so that the RMSE between this ! formula and the one from Sun 2001 is less than 4 times the minimum RMSE ! The ranges are [1.9, 2.9] for rei_coef and [160., 185.] for rei_min_temp dei = rei_coef * (iwc**0.2445) * ( temp(i,k) - rei_min_temp ) ! we clip the results deimin = 20. deimax = 155. dei = MIN(MAX(dei, deimin), deimax) ! formula to convert effective diameter in effective radius rei = 3. * SQRT(3.) / 8. * dei ELSEIF (iflag_rei .EQ. 1) THEN ! when we account for precipitation in the radiation scheme, ! It is recommended to use the rei formula from Sun and Rikkus 1999 with a revision ! from Sun 2001 (as in the IFS model) iwc=icefrac_optics(i, k)*radocond(i, k)/pclc(i,k)*zrho(i,k)*1000. !in cloud ice water content in g/m3 dei=(1.2351+0.0105*(temp(i,k)-273.15))*(45.8966*(iwc**0.2214) + & & 0.7957*(iwc**0.2535)*(temp(i,k)-83.15)) !deimax=155.0 !deimin=20.+40*cos(abs(latitude_deg(i))/180.*RPI) !Etienne: deimax and deimin controled by rei_max and rei_min in physiq.def deimax=rei_max*2.0 deimin=2.0*rei_min+40*cos(abs(latitude_deg(i))/180.*RPI) dei=min(dei,deimax) dei=max(dei,deimin) rei=3.*sqrt(3.)/8.*dei ELSE ! Default ! for ice clouds: as a function of the ambiant temperature ! [formula used by Iacobellis and Somerville (2000), with an ! asymptotical value of 3.5 microns at T<-81.4 C added to be ! consistent with observations of Heymsfield et al. 1986]: ! 2011/05/24 : rei_min = 3.5 becomes a free PARAMETER as well as ! rei_max=61.29 tc = temp(i, k) - 273.15 rei = d_rei_dt*tc + rei_max IF (tc<=-81.4) rei = rei_min ENDIF ! -- cloud optical thickness : ! [for liquid clouds, traditional formula, ! for ice clouds, Ebert & Curry (1992)] IF (zfiwp_var==0. .OR. rei<=0.) rei = 1. pcldtaupi(i, k) = 3.0/2.0*zflwp_var/rad_chaud_pi(i, k) + & zfiwp_var*(3.448E-03+2.431/rei) ENDIF ENDDO ENDDO ELSE !--not ok_cdnc ! -prescribed cloud droplet radius DO k = 1, min(3, klev) DO i = 1, klon rad_chaud(i, k) = rad_chau2 rad_chaud_pi(i, k) = rad_chau2 ENDDO ENDDO DO k = min(3, klev) + 1, klev DO i = 1, klon rad_chaud(i, k) = rad_chau1 rad_chaud_pi(i, k) = rad_chau1 ENDDO ENDDO ENDIF !--ok_cdnc ! --computation of cloud optical depth and emissivity ! --in the general case DO k = 1, klev DO i = 1, klon IF (pclc(i,k)<=seuil_neb) THEN ! effective cloud droplet radius (microns) for liquid water clouds: ! For output diagnostics cloud droplet effective radius [um] ! we multiply here with f * xl (fraction of liquid water ! clouds in the grid cell) to avoid problems in the averaging of the ! output. ! In the output of IOIPSL, derive the REAL cloud droplet ! effective radius as re/fl fl(i, k) = seuil_neb*(1.-icefrac_optics(i,k)) re(i, k) = rad_chaud(i, k)*fl(i, k) rel = 0. rei = 0. pclc(i, k) = 0.0 pcltau(i, k) = 0.0 pclemi(i, k) = 0.0 ELSE ! -- liquid/ice cloud water paths: zflwp_var = 1000.*(1.-icefrac_optics(i,k))*radocond(i, k)/pclc(i, k)*rhodz(i, k) zfiwp_var = 1000.*icefrac_optics(i, k)*radocond(i, k)/pclc(i, k)*rhodz(i, k) ! effective cloud droplet radius (microns) for liquid water clouds: ! For output diagnostics cloud droplet effective radius [um] ! we multiply here with f Effective radius of cloud droplet at top of cloud (m)* xl (fraction of liquid water ! clouds in the grid cell) to avoid problems in the averaging of the ! output. ! In the output of IOIPSL, derive the REAL cloud droplet ! effective radius as re/fl fl(i, k) = pclc(i, k)*(1.-icefrac_optics(i,k)) re(i, k) = rad_chaud(i, k)*fl(i, k) rel = rad_chaud(i, k) ! Calculation of ice cloud effective radius in micron IF (iflag_rei .EQ. 2) THEN ! in-cloud ice water content in g/m3 iwc = icefrac_optics(i,k) * radocond(i,k) / pclc(i,k) * zrho(i,k) * 1000. ! this formula is a simplified version of the Sun 2001 one (as in the IFS model, ! and which is activated for iflag_rei = 1). ! In particular, the term in temperature**2 has been simplified. ! The new coefs are tunable, and are by default set so that the results fit well ! to the Sun 2001 formula ! By default, rei_coef = 2.4 and rei_min_temp = 175. ! The ranges of these parameters are determined so that the RMSE between this ! formula and the one from Sun 2001 is less than 4 times the minimum RMSE ! The ranges are [1.9, 2.9] for rei_coef and [160., 185.] for rei_min_temp dei = rei_coef * (iwc**0.2445) * ( temp(i,k) - rei_min_temp ) ! we clip the results deimin = 20. deimax = 155. dei = MIN(MAX(dei, deimin), deimax) ! formula to convert effective diameter to effective radius rei = 3. * SQRT(3.) / 8. * dei ELSEIF (iflag_rei .EQ. 1) THEN ! when we account for precipitation in the radiation scheme, ! we use the rei formula from Sun and Rikkus 1999 with a revision ! from Sun 2001 (as in the IFS model) iwc=icefrac_optics(i, k)*radocond(i, k)/pclc(i,k)*zrho(i,k)*1000. !in cloud ice water content in g/m3 dei=(1.2351+0.0105*(temp(i,k)-273.15))*(45.8966*(iwc**0.2214) + & &0.7957*(iwc**0.2535)*(temp(i,k)-83.15)) !deimax=155.0 !deimin=20.+40*cos(abs(latitude_deg(i))/180.*RPI) !Etienne: deimax and deimin controled by rei_max and rei_min in physiq.def deimax=rei_max*2.0 deimin=2.0*rei_min+40*cos(abs(latitude_deg(i))/180.*RPI) dei=min(dei,deimax) dei=max(dei,deimin) rei=3.*sqrt(3.)/8.*dei ELSE ! Default ! for ice clouds: as a function of the ambiant temperature ! [formula used by Iacobellis and Somerville (2000), with an ! asymptotical value of 3.5 microns at T<-81.4 C added to be ! consistent with observations of Heymsfield et al. 1986]: ! 2011/05/24 : rei_min = 3.5 becomes a free PARAMETER as well as ! rei_max=61.29 tc = temp(i, k) - 273.15 rei = d_rei_dt*tc + rei_max IF (tc<=-81.4) rei = rei_min ENDIF ! -- cloud optical thickness : ! [for liquid clouds, traditional formula, ! for ice clouds, Ebert & Curry (1992)] IF (zflwp_var==0.) rel = 1. IF (zfiwp_var==0. .OR. rei<=0.) rei = 1. pcltau(i, k) = 3.0/2.0*(zflwp_var/rel) + zfiwp_var*(3.448E-03+2.431/ & rei) ! -- cloud infrared emissivity: ! [the broadband infrared absorption coefficient is PARAMETERized ! as a function of the effective cld droplet radius] ! Ebert and Curry (1992) formula as used by Kiehl & Zender (1995): k_ice = k_ice0 + 1.0/rei pclemi(i, k) = 1.0 - exp(-coef_chau*zflwp_var-df*k_ice*zfiwp_var) ENDIF reice(i, k) = rei xflwp(i) = xflwp(i) + xflwc(i, k)*rhodz(i, k) xfiwp(i) = xfiwp(i) + xfiwc(i, k)*rhodz(i, k) ENDDO ENDDO ! --if cloud droplet radius is fixed, then pcldtaupi=pcltau IF (.NOT. ok_cdnc) THEN DO k = 1, klev DO i = 1, klon pcldtaupi(i, k) = pcltau(i, k) reice_pi(i, k) = reice(i, k) ENDDO ENDDO ENDIF DO k = 1, klev DO i = 1, klon reliq(i, k) = rad_chaud(i, k) reliq_pi(i, k) = rad_chaud_pi(i, k) reice_pi(i, k) = reice(i, k) ENDDO ENDDO ! COMPUTE CLOUD LIQUID PATH AND TOTAL CLOUDINESS ! IM cf. CR:test: calcul prenant ou non en compte le recouvrement ! initialisations DO i = 1, klon zclear(i) = 1. zcloud(i) = 0. zcloudh(i) = 0. zcloudm(i) = 0. zcloudl(i) = 0. pch(i) = 1.0 pcm(i) = 1.0 pcl(i) = 1.0 radocondwp(i) = 0.0 ENDDO ! --calculation of liquid water path DO k = klev, 1, -1 DO i = 1, klon radocondwp(i) = radocondwp(i) + radocond(i, k)*rhodz(i, k) ENDDO ENDDO ! --calculation of cloud properties with cloud overlap ! choix de l'hypothese de recouvrement nuageuse via radopt.h (IM, 19.07.2016) ! !novlp=1: max-random ! !novlp=2: maximum ! !novlp=3: random IF (novlp==1) THEN DO k = klev, 1, -1 DO i = 1, klon zclear(i) = zclear(i)*(1.-max(pclc(i,k),zcloud(i)))/(1.-min(real( & zcloud(i),kind=8),1.-zepsec)) pct(i) = 1. - zclear(i) IF (paprs(i,k)<prmhc) THEN pch(i) = pch(i)*(1.-max(pclc(i,k),zcloudh(i)))/(1.-min(real(zcloudh & (i),kind=8),1.-zepsec)) zcloudh(i) = pclc(i, k) ELSE IF (paprs(i,k)>=prmhc .AND. paprs(i,k)<prlmc) THEN pcm(i) = pcm(i)*(1.-max(pclc(i,k),zcloudm(i)))/(1.-min(real(zcloudm & (i),kind=8),1.-zepsec)) zcloudm(i) = pclc(i, k) ELSE IF (paprs(i,k)>=prlmc) THEN pcl(i) = pcl(i)*(1.-max(pclc(i,k),zcloudl(i)))/(1.-min(real(zcloudl & (i),kind=8),1.-zepsec)) zcloudl(i) = pclc(i, k) ENDIF zcloud(i) = pclc(i, k) ENDDO ENDDO ELSE IF (novlp==2) THEN DO k = klev, 1, -1 DO i = 1, klon zcloud(i) = max(pclc(i,k), zcloud(i)) pct(i) = zcloud(i) IF (paprs(i,k)<prmhc) THEN pch(i) = min(pclc(i,k), pch(i)) ELSE IF (paprs(i,k)>=prmhc .AND. paprs(i,k)<prlmc) THEN pcm(i) = min(pclc(i,k), pcm(i)) ELSE IF (paprs(i,k)>=prlmc) THEN pcl(i) = min(pclc(i,k), pcl(i)) ENDIF ENDDO ENDDO ELSE IF (novlp==3) THEN DO k = klev, 1, -1 DO i = 1, klon zclear(i) = zclear(i)*(1.-pclc(i,k)) pct(i) = 1 - zclear(i) IF (paprs(i,k)<prmhc) THEN pch(i) = pch(i)*(1.0-pclc(i,k)) ELSE IF (paprs(i,k)>=prmhc .AND. paprs(i,k)<prlmc) THEN pcm(i) = pcm(i)*(1.0-pclc(i,k)) ELSE IF (paprs(i,k)>=prlmc) THEN pcl(i) = pcl(i)*(1.0-pclc(i,k)) ENDIF ENDDO ENDDO ENDIF DO i = 1, klon pch(i) = 1. - pch(i) pcm(i) = 1. - pcm(i) pcl(i) = 1. - pcl(i) ENDDO ! ======================================================== ! DIAGNOSTICS CALCULATION FOR CMIP5 PROTOCOL ! ======================================================== ! change by Nicolas Yan (LSCE) ! Cloud Droplet Number Concentration (CDNC) : 3D variable ! Fractionnal cover by liquid water cloud (LCC3D) : 3D variable ! Cloud Droplet Number Concentration at top of cloud (CLDNCL) : 2D variable ! Droplet effective radius at top of cloud (REFFCLWTOP) : 2D variable ! Fractionnal cover by liquid water at top of clouds (LCC) : 2D variable IF (ok_cdnc) THEN DO k = 1, klev DO i = 1, klon phase3d(i, k) = 1 - icefrac_optics(i, k) IF (pclc(i,k)<=seuil_neb) THEN lcc3d(i, k) = seuil_neb*phase3d(i, k) ELSE lcc3d(i, k) = pclc(i, k)*phase3d(i, k) ENDIF scdnc(i, k) = lcc3d(i, k)*cdnc(i, k) ! m-3 ENDDO ENDDO DO i = 1, klon lcc(i) = 0. reffclwtop(i) = 0. cldncl(i) = 0. IF (novlp.EQ.3 .OR. novlp.EQ.1) tcc(i) = 1. IF (novlp.EQ.2) tcc(i) = 0. ENDDO DO i = 1, klon DO k = klev - 1, 1, -1 !From TOA down ! Test, if the cloud optical depth exceeds the necessary ! threshold: IF (pcltau(i,k)>thres_tau .AND. pclc(i,k)>thres_neb) THEN IF (novlp.EQ.2) THEN IF (first_first) THEN first(i,k) = .TRUE. ENDIF flag_max = -1. ftmp(i) = max(tcc(i), pclc(i,k)) ENDIF IF (novlp.EQ.3) THEN IF (first_first) THEN first(i,k) = .TRUE. ENDIF flag_max = 1. ftmp(i) = tcc(i)*(1-pclc(i,k)) ENDIF IF (novlp.EQ.1) THEN IF (first_first) THEN first(i,k) = .TRUE. ENDIF flag_max = 1. ftmp(i) = tcc(i)*(1.-max(pclc(i,k),pclc(i,k+1)))/(1.-min(pclc(i, & k+1),1.-thres_neb)) ENDIF ! Effective radius of cloud droplet at top of cloud (m) reffclwtop(i) = reffclwtop(i) + rad_chaud(i, k)*1.0E-06*phase3d(i, & k)*(tcc(i)-ftmp(i))*flag_max ! CDNC at top of cloud (m-3) cldncl(i) = cldncl(i) + cdnc(i, k)*phase3d(i, k)*(tcc(i)-ftmp(i))* & flag_max ! Liquid Cloud Content at top of cloud lcc(i) = lcc(i) + phase3d(i, k)*(tcc(i)-ftmp(i))*flag_max ! Total Cloud Content at top of cloud tcc(i) = ftmp(i) ENDIF ! is there a visible, not-too-small cloud? ENDDO ! loop over k IF (novlp.EQ.3 .OR. novlp.EQ.1) tcc(i) = 1. - tcc(i) ENDDO ! loop over i ! ! Convective and Stratiform Cloud Droplet Effective Radius (REFFCLWC ! REFFCLWS) DO i = 1, klon DO k = 1, klev ! Weight to be used for outputs: eau_liquide*couverture nuageuse lcc3dcon(i, k) = rnebcon(i, k)*phase3d(i, k)*ccwcon(i, k) ! eau liquide convective lcc3dstra(i, k) = pclc(i, k)*radocond(i, k)*phase3d(i, k) lcc3dstra(i, k) = lcc3dstra(i, k) - lcc3dcon(i, k) ! eau liquide stratiforme lcc3dstra(i, k) = max(lcc3dstra(i,k), 0.0) !FC pour la glace (CAUSES) icc3dcon(i, k) = rnebcon(i, k)*(1-phase3d(i, k))*ccwcon(i, k) ! glace convective icc3dstra(i, k)= pclc(i, k)*radocond(i, k)*(1-phase3d(i, k)) icc3dstra(i, k) = icc3dstra(i, k) - icc3dcon(i, k) ! glace stratiforme icc3dstra(i, k) = max( icc3dstra(i, k), 0.0) !FC (CAUSES) ! Compute cloud droplet radius as above in meter radius = 1.1*((radocond(i,k)*pplay(i,k)/(rd*temp(i,k)))/(4./3*rpi*1000.* & cdnc(i,k)))**(1./3.) radius = max(radius, 5.E-6) ! Convective Cloud Droplet Effective Radius (REFFCLWC) : variable 3D reffclwc(i, k) = radius reffclwc(i, k) = reffclwc(i, k)*lcc3dcon(i, k) ! Stratiform Cloud Droplet Effective Radius (REFFCLWS) : variable 3D reffclws(i, k) = radius reffclws(i, k) = reffclws(i, k)*lcc3dstra(i, k) ENDDO !klev ENDDO !klon ! Column Integrated Cloud Droplet Number (CLDNVI) : variable 2D DO i = 1, klon cldnvi(i) = 0. lcc_integrat(i) = 0. height(i) = 0. DO k = 1, klev cldnvi(i) = cldnvi(i) + cdnc(i, k)*lcc3d(i, k)*dh(i, k) lcc_integrat(i) = lcc_integrat(i) + lcc3d(i, k)*dh(i, k) height(i) = height(i) + dh(i, k) ENDDO ! klev lcc_integrat(i) = lcc_integrat(i)/height(i) IF (lcc_integrat(i)<=1.0E-03) THEN cldnvi(i) = cldnvi(i)*lcc(i)/seuil_neb ELSE cldnvi(i) = cldnvi(i)*lcc(i)/lcc_integrat(i) ENDIF ENDDO ! klon DO i = 1, klon DO k = 1, klev IF (scdnc(i,k)<=0.0) scdnc(i, k) = 0.0 IF (reffclws(i,k)<=0.0) reffclws(i, k) = 0.0 IF (reffclwc(i,k)<=0.0) reffclwc(i, k) = 0.0 IF (lcc3d(i,k)<=0.0) lcc3d(i, k) = 0.0 IF (lcc3dcon(i,k)<=0.0) lcc3dcon(i, k) = 0.0 IF (lcc3dstra(i,k)<=0.0) lcc3dstra(i, k) = 0.0 !FC (CAUSES) IF (icc3dcon(i,k)<=0.0) icc3dcon(i, k) = 0.0 IF (icc3dstra(i,k)<=0.0) icc3dstra(i, k) = 0.0 !FC (CAUSES) ENDDO IF (reffclwtop(i)<=0.0) reffclwtop(i) = 0.0 IF (cldncl(i)<=0.0) cldncl(i) = 0.0 IF (cldnvi(i)<=0.0) cldnvi(i) = 0.0 IF (lcc(i)<=0.0) lcc(i) = 0.0 ENDDO ENDIF !ok_cdnc RETURN END SUBROUTINE cloud_optics_prop END MODULE lmdz_cloud_optics_prop