SUBROUTINE vdifc(ngrid,nlay,nq,co2ice,ppopsk, $ ptimestep,pcapcal,lecrit, $ pplay,pplev,pzlay,pzlev,pz0, $ pu,pv,ph,pq,ptsrf,pemis,pqsurf, $ pdufi,pdvfi,pdhfi,pdqfi,pfluxsrf, $ pdudif,pdvdif,pdhdif,pdtsrf,pq2, $ pdqdif,pdqsdif,wstar,zcdv_true,zcdh_true, $ hfmax,sensibFlux) use tracer_mod, only: noms, igcm_dust_mass, igcm_dust_number, & igcm_dust_submicron, igcm_h2o_vap, & igcm_h2o_ice, alpha_lift use surfdat_h, only: watercaptag, frost_albedo_threshold, dryness USE comcstfi_h use turb_mod, only: turb_resolved, ustar, tstar IMPLICIT NONE c======================================================================= c c subject: c -------- c Turbulent diffusion (mixing) for potential T, U, V and tracer c c Shema implicite c On commence par rajouter au variables x la tendance physique c et on resoult en fait: c x(t+1) = x(t) + dt * (dx/dt)phys(t) + dt * (dx/dt)difv(t+1) c c author: c ------ c Hourdin/Forget/Fournier c======================================================================= c----------------------------------------------------------------------- c declarations: c ------------- !#include "dimensions.h" !#include "dimphys.h" #include "callkeys.h" !#include "surfdat.h" !#include "comgeomfi.h" !#include "tracer.h" #include "microphys.h" c c arguments: c ---------- INTEGER,INTENT(IN) :: ngrid,nlay REAL,INTENT(IN) :: ptimestep REAL,INTENT(IN) :: pplay(ngrid,nlay),pplev(ngrid,nlay+1) REAL,INTENT(IN) :: pzlay(ngrid,nlay),pzlev(ngrid,nlay+1) REAL,INTENT(IN) :: pu(ngrid,nlay),pv(ngrid,nlay) REAL,INTENT(IN) :: ph(ngrid,nlay) REAL,INTENT(IN) :: ptsrf(ngrid),pemis(ngrid) REAL,INTENT(IN) :: pdufi(ngrid,nlay),pdvfi(ngrid,nlay) REAL,INTENT(IN) :: pdhfi(ngrid,nlay) REAL,INTENT(IN) :: pfluxsrf(ngrid) REAL,INTENT(OUT) :: pdudif(ngrid,nlay),pdvdif(ngrid,nlay) REAL,INTENT(OUT) :: pdtsrf(ngrid),pdhdif(ngrid,nlay) REAL,INTENT(IN) :: pcapcal(ngrid) REAL,INTENT(INOUT) :: pq2(ngrid,nlay+1) c Argument added for condensation: REAL,INTENT(IN) :: co2ice (ngrid), ppopsk(ngrid,nlay) logical,INTENT(IN) :: lecrit REAL,INTENT(IN) :: pz0(ngrid) ! surface roughness length (m) c Argument added to account for subgrid gustiness : REAL wstar(ngrid), hfmax(ngrid)!, zi(ngrid) c Traceurs : integer,intent(in) :: nq REAL,INTENT(IN) :: pqsurf(ngrid,nq) real,intent(in) :: pq(ngrid,nlay,nq), pdqfi(ngrid,nlay,nq) real,intent(out) :: pdqdif(ngrid,nlay,nq) real,intent(out) :: pdqsdif(ngrid,nq) c local: c ------ REAL :: pt(ngrid,nlay) INTEGER ilev,ig,ilay,nlev REAL z4st,zdplanck(ngrid) REAL zkv(ngrid,nlay+1),zkh(ngrid,nlay+1) REAL zkq(ngrid,nlay+1) REAL zcdv(ngrid),zcdh(ngrid) REAL zcdv_true(ngrid),zcdh_true(ngrid) ! drag coeff are used by the LES to recompute u* and hfx REAL zu(ngrid,nlay),zv(ngrid,nlay) REAL zh(ngrid,nlay) REAL ztsrf2(ngrid) REAL z1(ngrid),z2(ngrid) REAL za(ngrid,nlay),zb(ngrid,nlay) REAL zb0(ngrid,nlay) REAL zc(ngrid,nlay),zd(ngrid,nlay) REAL zcst1 REAL zu2(ngrid) EXTERNAL SSUM,SCOPY REAL SSUM LOGICAL,SAVE :: firstcall=.true. c variable added for CO2 condensation: c ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ REAL hh , zhcond(ngrid,nlay) REAL,PARAMETER :: latcond=5.9e5 REAL,PARAMETER :: tcond1mb=136.27 REAL,SAVE :: acond,bcond c For latent heat release from ground ice sublimation ! REAL tsrf_lw(ngrid) ! REAL alpha REAL T1,T2 SAVE T1,T2 DATA T1,T2/-604.3,1080.7/ ! zeros of latent heat equation for ice c Tracers : c ~~~~~~~ INTEGER iq REAL zq(ngrid,nlay,nq) REAL zq1temp(ngrid) REAL rho(ngrid) ! near surface air density REAL qsat(ngrid) REAL kmixmin c Mass-variation scheme : c ~~~~~~~ INTEGER j,l REAL zcondicea(ngrid,nlay) REAL zt(ngrid,nlay),ztcond(ngrid,nlay+1) REAL betam(ngrid,nlay),dmice(ngrid,nlay) REAL pdtc(ngrid,nlay) REAL zhs(ngrid,nlay) REAL,SAVE :: ccond c Theta_m formulation for mass-variation scheme : c ~~~~~~~ INTEGER,SAVE :: ico2 INTEGER llnt(ngrid) REAL,SAVE :: m_co2, m_noco2, A , B REAL vmr_co2(ngrid,nlay) REAL qco2,mmean REAL,INTENT(OUT) :: sensibFlux(ngrid) c ** un petit test de coherence c -------------------------- IF (firstcall) THEN c To compute: Tcond= 1./(bcond-acond*log(.0095*p)) (p in pascal) bcond=1./tcond1mb acond=r/latcond ccond=cpp/(g*latcond) PRINT*,'In vdifc: Tcond(P=1mb)=',tcond1mb,' Lcond=',latcond PRINT*,' acond,bcond,ccond',acond,bcond,ccond ico2=0 if (tracer) then c Prepare Special treatment if one of the tracer is CO2 gas do iq=1,nq if (noms(iq).eq."co2") then ico2=iq m_co2 = 44.01E-3 ! CO2 molecular mass (kg/mol) m_noco2 = 33.37E-3 ! Non condensible mol mass (kg/mol) c Compute A and B coefficient use to compute c mean molecular mass Mair defined by c 1/Mair = q(ico2)/m_co2 + (1-q(ico2))/m_noco2 c 1/Mair = A*q(ico2) + B A =(1/m_co2 - 1/m_noco2) B=1/m_noco2 endif enddo end if firstcall=.false. ENDIF c----------------------------------------------------------------------- c 1. initialisation c ----------------- nlev=nlay+1 ! initialize output tendencies to zero: pdudif(1:ngrid,1:nlay)=0 pdvdif(1:ngrid,1:nlay)=0 pdhdif(1:ngrid,1:nlay)=0 pdtsrf(1:ngrid)=0 pdqdif(1:ngrid,1:nlay,1:nq)=0 pdqsdif(1:ngrid,1:nq)=0 c ** calcul de rho*dz et dt*rho/dz=dt*rho**2 g/dp c avec rho=p/RT=p/ (R Theta) (p/ps)**kappa c ---------------------------------------- DO ilay=1,nlay DO ig=1,ngrid za(ig,ilay)=(pplev(ig,ilay)-pplev(ig,ilay+1))/g ! Mass variation scheme: betam(ig,ilay)=-za(ig,ilay)*latcond/(cpp*ppopsk(ig,ilay)) ENDDO ENDDO zcst1=4.*g*ptimestep/(r*r) DO ilev=2,nlev-1 DO ig=1,ngrid zb0(ig,ilev)=pplev(ig,ilev)* s (pplev(ig,1)/pplev(ig,ilev))**rcp / s (ph(ig,ilev-1)+ph(ig,ilev)) zb0(ig,ilev)=zcst1*zb0(ig,ilev)*zb0(ig,ilev)/ s (pplay(ig,ilev-1)-pplay(ig,ilev)) ENDDO ENDDO DO ig=1,ngrid zb0(ig,1)=ptimestep*pplev(ig,1)/(r*ptsrf(ig)) ENDDO c ** diagnostique pour l'initialisation c ---------------------------------- IF(lecrit) THEN ig=ngrid/2+1 PRINT*,'Pression (mbar) ,altitude (km),u,v,theta, rho dz' DO ilay=1,nlay WRITE(*,'(6f11.5)') s .01*pplay(ig,ilay),.001*pzlay(ig,ilay), s pu(ig,ilay),pv(ig,ilay),ph(ig,ilay),za(ig,ilay) ENDDO PRINT*,'Pression (mbar) ,altitude (km),zb' DO ilev=1,nlay WRITE(*,'(3f15.7)') s .01*pplev(ig,ilev),.001*pzlev(ig,ilev), s zb0(ig,ilev) ENDDO ENDIF c ----------------------------------- c Potential Condensation temperature: c ----------------------------------- c Compute CO2 Volume mixing ratio c ------------------------------- if (callcond.and.(ico2.ne.0)) then DO ilev=1,nlay DO ig=1,ngrid qco2=MAX(1.E-30 & ,pq(ig,ilev,ico2)+pdqfi(ig,ilev,ico2)*ptimestep) c Mean air molecular mass = 1/(q(ico2)/m_co2 + (1-q(ico2))/m_noco2) mmean=1/(A*qco2 +B) vmr_co2(ig,ilev) = qco2*mmean/m_co2 ENDDO ENDDO else DO ilev=1,nlay DO ig=1,ngrid vmr_co2(ig,ilev)=0.95 ENDDO ENDDO end if c forecast of atmospheric temperature zt and frost temperature ztcond c -------------------------------------------------------------------- if (callcond) then DO ilev=1,nlay DO ig=1,ngrid ztcond(ig,ilev)= & 1./(bcond-acond*log(.01*vmr_co2(ig,ilev)*pplay(ig,ilev))) if (pplay(ig,ilev).lt.1e-4) ztcond(ig,ilev)=0.0 !mars Monica ! zhcond(ig,ilev) = ! & (1./(bcond-acond*log(.0095*pplay(ig,ilev))))/ppopsk(ig,ilev) zhcond(ig,ilev) = ztcond(ig,ilev)/ppopsk(ig,ilev) END DO END DO ztcond(:,nlay+1)=ztcond(:,nlay) else zhcond(:,:) = 0 ztcond(:,:) = 0 end if c----------------------------------------------------------------------- c 2. ajout des tendances physiques c ----------------------------- DO ilev=1,nlay DO ig=1,ngrid zu(ig,ilev)=pu(ig,ilev)+pdufi(ig,ilev)*ptimestep zv(ig,ilev)=pv(ig,ilev)+pdvfi(ig,ilev)*ptimestep zh(ig,ilev)=ph(ig,ilev)+pdhfi(ig,ilev)*ptimestep ! zh(ig,ilev)=max(zh(ig,ilev),zhcond(ig,ilev)) ENDDO ENDDO if(tracer) then DO iq =1, nq DO ilev=1,nlay DO ig=1,ngrid zq(ig,ilev,iq)=pq(ig,ilev,iq)+pdqfi(ig,ilev,iq)*ptimestep ENDDO ENDDO ENDDO end if c----------------------------------------------------------------------- c 3. schema de turbulence c -------------------- c ** source d'energie cinetique turbulente a la surface c (condition aux limites du schema de diffusion turbulente c dans la couche limite c --------------------- CALL vdif_cd(ngrid,nlay,pz0,g,pzlay,pu,pv,wstar,ptsrf,ph & ,zcdv_true,zcdh_true) zu2(:)=pu(:,1)*pu(:,1)+pv(:,1)*pv(:,1) IF (callrichsl) THEN zcdv(:)=zcdv_true(:)*sqrt(zu2(:)+ & (log(1.+0.7*wstar(:) + 2.3*wstar(:)**2))**2) zcdh(:)=zcdh_true(:)*sqrt(zu2(:)+ & (log(1.+0.7*wstar(:) + 2.3*wstar(:)**2))**2) ustar(:)=sqrt(zcdv_true(:))*sqrt(zu2(:)+ & (log(1.+0.7*wstar(:) + 2.3*wstar(:)**2))**2) tstar(:)=0. DO ig=1,ngrid IF (zcdh_true(ig) .ne. 0.) THEN ! When Cd=Ch=0, u*=t*=0 tstar(ig)=(ph(ig,1)-ptsrf(ig))*zcdh(ig)/ustar(ig) ENDIF ENDDO ELSE zcdv(:)=zcdv_true(:)*sqrt(zu2(:)) ! 1 / bulk aerodynamic momentum conductance zcdh(:)=zcdh_true(:)*sqrt(zu2(:)) ! 1 / bulk aerodynamic heat conductance ustar(:)=sqrt(zcdv_true(:))*sqrt(zu2(:)) tstar(:)=(ph(:,1)-ptsrf(:))*zcdh_true(:)/sqrt(zcdv_true(:)) ENDIF ! Some usefull diagnostics for the new surface layer parametrization : ! call WRITEDIAGFI(ngrid,'vdifc_zcdv_true', ! & 'momentum drag','no units', ! & 2,zcdv_true) ! call WRITEDIAGFI(ngrid,'vdifc_zcdh_true', ! & 'heat drag','no units', ! & 2,zcdh_true) ! call WRITEDIAGFI(ngrid,'vdifc_ust', ! & 'friction velocity','m/s',2,ust) ! call WRITEDIAGFI(ngrid,'vdifc_tst', ! & 'friction temperature','K',2,tst) ! call WRITEDIAGFI(ngrid,'vdifc_zcdv', ! & 'aerodyn momentum conductance','m/s', ! & 2,zcdv) ! call WRITEDIAGFI(ngrid,'vdifc_zcdh', ! & 'aerodyn heat conductance','m/s', ! & 2,zcdh) c ** schema de diffusion turbulente dans la couche limite c ---------------------------------------------------- IF (.not. callyamada4) THEN CALL vdif_kc(ngrid,nlay,nq,ptimestep,g,pzlev,pzlay & ,pu,pv,ph,zcdv_true & ,pq2,zkv,zkh,zq) ELSE pt(:,:)=ph(:,:)*ppopsk(:,:) CALL yamada4(ngrid,nlay,nq,ptimestep,g,r,pplev,pt s ,pzlev,pzlay,pu,pv,ph,pq,zcdv_true,pq2,zkv,zkh,zkq,ustar s ,9) ENDIF if ((doubleq).and.(ngrid.eq.1)) then kmixmin = 80. !80.! minimum eddy mix coeff in 1D do ilev=1,nlay do ig=1,ngrid zkh(ig,ilev) = max(kmixmin,zkh(ig,ilev)) zkv(ig,ilev) = max(kmixmin,zkv(ig,ilev)) end do end do end if c ** diagnostique pour le schema de turbulence c ----------------------------------------- IF(lecrit) THEN PRINT* PRINT*,'Diagnostic for the vertical turbulent mixing' PRINT*,'Cd for momentum and potential temperature' PRINT*,zcdv(ngrid/2+1),zcdh(ngrid/2+1) PRINT*,'Mixing coefficient for momentum and pot.temp.' DO ilev=1,nlay PRINT*,zkv(ngrid/2+1,ilev),zkh(ngrid/2+1,ilev) ENDDO ENDIF c----------------------------------------------------------------------- c 4. inversion pour l'implicite sur u c -------------------------------- c ** l'equation est c u(t+1) = u(t) + dt * {(du/dt)phys}(t) + dt * {(du/dt)difv}(t+1) c avec c /zu/ = u(t) + dt * {(du/dt)phys}(t) (voir paragraphe 2.) c et c dt * {(du/dt)difv}(t+1) = dt * {(d/dz)[ Ku (du/dz) ]}(t+1) c donc les entrees sont /zcdv/ pour la condition a la limite sol c et /zkv/ = Ku CALL multipl((nlay-1)*ngrid,zkv(1,2),zb0(1,2),zb(1,2)) CALL multipl(ngrid,zcdv,zb0,zb) DO ig=1,ngrid z1(ig)=1./(za(ig,nlay)+zb(ig,nlay)) zc(ig,nlay)=za(ig,nlay)*zu(ig,nlay)*z1(ig) zd(ig,nlay)=zb(ig,nlay)*z1(ig) ENDDO DO ilay=nlay-1,1,-1 DO ig=1,ngrid z1(ig)=1./(za(ig,ilay)+zb(ig,ilay)+ $ zb(ig,ilay+1)*(1.-zd(ig,ilay+1))) zc(ig,ilay)=(za(ig,ilay)*zu(ig,ilay)+ $ zb(ig,ilay+1)*zc(ig,ilay+1))*z1(ig) zd(ig,ilay)=zb(ig,ilay)*z1(ig) ENDDO ENDDO DO ig=1,ngrid zu(ig,1)=zc(ig,1) ENDDO DO ilay=2,nlay DO ig=1,ngrid zu(ig,ilay)=zc(ig,ilay)+zd(ig,ilay)*zu(ig,ilay-1) ENDDO ENDDO c----------------------------------------------------------------------- c 5. inversion pour l'implicite sur v c -------------------------------- c ** l'equation est c v(t+1) = v(t) + dt * {(dv/dt)phys}(t) + dt * {(dv/dt)difv}(t+1) c avec c /zv/ = v(t) + dt * {(dv/dt)phys}(t) (voir paragraphe 2.) c et c dt * {(dv/dt)difv}(t+1) = dt * {(d/dz)[ Kv (dv/dz) ]}(t+1) c donc les entrees sont /zcdv/ pour la condition a la limite sol c et /zkv/ = Kv DO ig=1,ngrid z1(ig)=1./(za(ig,nlay)+zb(ig,nlay)) zc(ig,nlay)=za(ig,nlay)*zv(ig,nlay)*z1(ig) zd(ig,nlay)=zb(ig,nlay)*z1(ig) ENDDO DO ilay=nlay-1,1,-1 DO ig=1,ngrid z1(ig)=1./(za(ig,ilay)+zb(ig,ilay)+ $ zb(ig,ilay+1)*(1.-zd(ig,ilay+1))) zc(ig,ilay)=(za(ig,ilay)*zv(ig,ilay)+ $ zb(ig,ilay+1)*zc(ig,ilay+1))*z1(ig) zd(ig,ilay)=zb(ig,ilay)*z1(ig) ENDDO ENDDO DO ig=1,ngrid zv(ig,1)=zc(ig,1) ENDDO DO ilay=2,nlay DO ig=1,ngrid zv(ig,ilay)=zc(ig,ilay)+zd(ig,ilay)*zv(ig,ilay-1) ENDDO ENDDO c----------------------------------------------------------------------- c 6. inversion pour l'implicite sur h sans oublier le couplage c avec le sol (conduction) c ------------------------ c ** l'equation est c h(t+1) = h(t) + dt * {(dh/dt)phys}(t) + dt * {(dh/dt)difv}(t+1) c avec c /zh/ = h(t) + dt * {(dh/dt)phys}(t) (voir paragraphe 2.) c et c dt * {(dh/dt)difv}(t+1) = dt * {(d/dz)[ Kh (dh/dz) ]}(t+1) c donc les entrees sont /zcdh/ pour la condition de raccord au sol c et /zkh/ = Kh c ------------- c Mass variation scheme: CALL multipl((nlay-1)*ngrid,zkh(1,2),zb0(1,2),zb(1,2)) CALL multipl(ngrid,zcdh,zb0,zb) c on initialise dm c pdtc(:,:)=0. zt(:,:)=0. dmice(:,:)=0. c ** calcul de (d Planck / dT) a la temperature d'interface c ------------------------------------------------------ z4st=4.*5.67e-8*ptimestep IF (tke_heat_flux .eq. 0.) THEN DO ig=1,ngrid zdplanck(ig)=z4st*pemis(ig)*ptsrf(ig)*ptsrf(ig)*ptsrf(ig) ENDDO ELSE zdplanck(:)=0. ENDIF ! calcul de zc et zd pour la couche top en prenant en compte le terme ! de variation de masse (on fait une boucle pour que ça converge) ! Identification des points de grilles qui ont besoin de la correction llnt(:)=1 IF (.not.turb_resolved) THEN IF (callcond) THEN DO ig=1,ngrid DO l=1,nlay if(zh(ig,l) .lt. zhcond(ig,l)) then llnt(ig)=300 ! 200 and 100 do not go beyond month 9 with normal dissipation goto 5 endif ENDDO 5 continue ENDDO ENDIF ENDIF DO ig=1,ngrid ! Initialization of z1 and zd, which do not depend on dmice z1(ig)=1./(za(ig,nlay)+zb(ig,nlay)) zd(ig,nlay)=zb(ig,nlay)*z1(ig) DO ilay=nlay-1,1,-1 z1(ig)=1./(za(ig,ilay)+zb(ig,ilay)+ $ zb(ig,ilay+1)*(1.-zd(ig,ilay+1))) zd(ig,ilay)=zb(ig,ilay)*z1(ig) ENDDO ! Convergence loop DO j=1,llnt(ig) z1(ig)=1./(za(ig,nlay)+zb(ig,nlay)) zc(ig,nlay)=za(ig,nlay)*zh(ig,nlay) & -betam(ig,nlay)*dmice(ig,nlay) zc(ig,nlay)=zc(ig,nlay)*z1(ig) ! zd(ig,nlay)=zb(ig,nlay)*z1(ig) ! calcul de zc et zd pour les couches du haut vers le bas DO ilay=nlay-1,1,-1 z1(ig)=1./(za(ig,ilay)+zb(ig,ilay)+ $ zb(ig,ilay+1)*(1.-zd(ig,ilay+1))) zc(ig,ilay)=(za(ig,ilay)*zh(ig,ilay)+ $ zb(ig,ilay+1)*zc(ig,ilay+1)- $ betam(ig,ilay)*dmice(ig,ilay))*z1(ig) ! zd(ig,ilay)=zb(ig,ilay)*z1(ig) ENDDO c ** calcul de la temperature_d'interface et de sa tendance. c on ecrit que la somme des flux est nulle a l'interface c a t + \delta t, c c'est a dire le flux radiatif a {t + \delta t} c + le flux turbulent a {t + \delta t} c qui s'ecrit K (T1-Tsurf) avec T1 = d1 Tsurf + c1 c (notation K dt = /cpp*b/) c + le flux dans le sol a t c + l'evolution du flux dans le sol lorsque la temperature d'interface c passe de sa valeur a t a sa valeur a {t + \delta t}. c ---------------------------------------------------- z1(ig)=pcapcal(ig)*ptsrf(ig)+cpp*zb(ig,1)*zc(ig,1) s +zdplanck(ig)*ptsrf(ig)+ pfluxsrf(ig)*ptimestep z2(ig)= pcapcal(ig)+cpp*zb(ig,1)*(1.-zd(ig,1))+zdplanck(ig) ztsrf2(ig)=z1(ig)/z2(ig) ! pdtsrf(ig)=(ztsrf2(ig)-ptsrf(ig))/ptimestep !incremented outside loop zhs(ig,1)=zc(ig,1)+zd(ig,1)*ztsrf2(ig) c ** et a partir de la temperature au sol on remonte c ----------------------------------------------- DO ilay=2,nlay zhs(ig,ilay)=zc(ig,ilay)+zd(ig,ilay)*zhs(ig,ilay-1) ENDDO DO ilay=1,nlay zt(ig,ilay)=zhs(ig,ilay)*ppopsk(ig,ilay) ENDDO c Condensation/sublimation in the atmosphere c ------------------------------------------ c (computation of zcondicea and dmice) zcondicea(ig,:)=0. pdtc(ig,:)=0. DO l=nlay , 1, -1 IF(zt(ig,l).LT.ztcond(ig,l)) THEN pdtc(ig,l)=(ztcond(ig,l) - zt(ig,l))/ptimestep zcondicea(ig,l)=(pplev(ig,l)-pplev(ig,l+1)) & *ccond*pdtc(ig,l) dmice(ig,l)= dmice(ig,l) + zcondicea(ig,l)*ptimestep END IF ENDDO ENDDO !of Do j=1,XXX ENDDO !of Do ig=1,nlay pdtsrf(:)=(ztsrf2(:)-ptsrf(:))/ptimestep DO ig=1,ngrid ! computing sensible heat flux (atm => surface) sensibFlux(ig)=cpp*zb(ig,1)/ptimestep*(zhs(ig,1)-ztsrf2(ig)) ENDDO c----------------------------------------------------------------------- c TRACERS c ------- if(tracer) then c Using the wind modified by friction for lifting and sublimation c ---------------------------------------------------------------- ! This is computed above and takes into account surface-atmosphere flux ! enhancement by subgrid gustiness and atmospheric-stability related ! variations of transfer coefficients. ! DO ig=1,ngrid ! zu2(ig)=zu(ig,1)*zu(ig,1)+zv(ig,1)*zv(ig,1) ! zcdv(ig)=zcdv_true(ig)*sqrt(zu2(ig)) ! zcdh(ig)=zcdh_true(ig)*sqrt(zu2(ig)) ! ENDDO c Calcul du flux vertical au bas de la premiere couche (dust) : c ----------------------------------------------------------- do ig=1,ngrid rho(ig) = zb0(ig,1) /ptimestep c zb(ig,1) = 0. end do c Dust lifting: if (lifting) then #ifndef MESOSCALE if (doubleq.AND.submicron) then do ig=1,ngrid c if(co2ice(ig).lt.1) then pdqsdif(ig,igcm_dust_mass) = & -alpha_lift(igcm_dust_mass) pdqsdif(ig,igcm_dust_number) = & -alpha_lift(igcm_dust_number) pdqsdif(ig,igcm_dust_submicron) = & -alpha_lift(igcm_dust_submicron) c end if end do else if (doubleq) then do ig=1,ngrid if(co2ice(ig).lt.1) then ! soulevement pas constant pdqsdif(ig,igcm_dust_mass) = & -alpha_lift(igcm_dust_mass) pdqsdif(ig,igcm_dust_number) = & -alpha_lift(igcm_dust_number) end if end do else if (submicron) then do ig=1,ngrid pdqsdif(ig,igcm_dust_submicron) = & -alpha_lift(igcm_dust_submicron) end do else #endif call dustlift(ngrid,nlay,nq,rho,zcdh_true,zcdh,co2ice, & pdqsdif) #ifndef MESOSCALE endif !doubleq.AND.submicron #endif else pdqsdif(1:ngrid,1:nq) = 0. end if c OU calcul de la valeur de q a la surface (water) : c ---------------------------------------- if (water) then call watersat(ngrid,ptsrf,pplev(1,1),qsat) end if c Inversion pour l'implicite sur q c -------------------------------- do iq=1,nq CALL multipl((nlay-1)*ngrid,zkh(1,2),zb0(1,2),zb(1,2)) if ((water).and.(iq.eq.igcm_h2o_vap)) then c This line is required to account for turbulent transport c from surface (e.g. ice) to mid-layer of atmosphere: CALL multipl(ngrid,zcdv,zb0,zb(1,1)) CALL multipl(ngrid,dryness,zb(1,1),zb(1,1)) else ! (re)-initialize zb(:,1) zb(1:ngrid,1)=0 end if DO ig=1,ngrid z1(ig)=1./(za(ig,nlay)+zb(ig,nlay)) zc(ig,nlay)=za(ig,nlay)*zq(ig,nlay,iq)*z1(ig) zd(ig,nlay)=zb(ig,nlay)*z1(ig) ENDDO DO ilay=nlay-1,2,-1 DO ig=1,ngrid z1(ig)=1./(za(ig,ilay)+zb(ig,ilay)+ $ zb(ig,ilay+1)*(1.-zd(ig,ilay+1))) zc(ig,ilay)=(za(ig,ilay)*zq(ig,ilay,iq)+ $ zb(ig,ilay+1)*zc(ig,ilay+1))*z1(ig) zd(ig,ilay)=zb(ig,ilay)*z1(ig) ENDDO ENDDO if (water.and.(iq.eq.igcm_h2o_ice)) then ! special case for water ice tracer: do not include ! h2o ice tracer from surface (which is set when handling ! h2o vapour case (see further down). DO ig=1,ngrid z1(ig)=1./(za(ig,1)+zb(ig,1)+ $ zb(ig,2)*(1.-zd(ig,2))) zc(ig,1)=(za(ig,1)*zq(ig,1,iq)+ $ zb(ig,2)*zc(ig,2)) *z1(ig) ENDDO else ! general case DO ig=1,ngrid z1(ig)=1./(za(ig,1)+zb(ig,1)+ $ zb(ig,2)*(1.-zd(ig,2))) zc(ig,1)=(za(ig,1)*zq(ig,1,iq)+ $ zb(ig,2)*zc(ig,2) + $ (-pdqsdif(ig,iq)) *ptimestep) *z1(ig) !tracer flux from surface ENDDO endif ! of if (water.and.(iq.eq.igcm_h2o_ice)) IF ((water).and.(iq.eq.igcm_h2o_vap)) then c Calculation for turbulent exchange with the surface (for ice) DO ig=1,ngrid zd(ig,1)=zb(ig,1)*z1(ig) zq1temp(ig)=zc(ig,1)+ zd(ig,1)*qsat(ig) pdqsdif(ig,igcm_h2o_ice)=rho(ig)*dryness(ig)*zcdv(ig) & *(zq1temp(ig)-qsat(ig)) c write(*,*)'flux vers le sol=',pdqsdif(ig,nq) END DO DO ig=1,ngrid if(.not.watercaptag(ig)) then if ((-pdqsdif(ig,igcm_h2o_ice)*ptimestep) & .gt.pqsurf(ig,igcm_h2o_ice)) then c write(*,*)'on sublime plus que qsurf!' pdqsdif(ig,igcm_h2o_ice)= & -pqsurf(ig,igcm_h2o_ice)/ptimestep c write(*,*)'flux vers le sol=',pdqsdif(ig,nq) z1(ig)=1./(za(ig,1)+ zb(ig,2)*(1.-zd(ig,2))) zc(ig,1)=(za(ig,1)*zq(ig,1,igcm_h2o_vap)+ $ zb(ig,2)*zc(ig,2) + $ (-pdqsdif(ig,igcm_h2o_ice)) *ptimestep) *z1(ig) zq1temp(ig)=zc(ig,1) endif endif ! if (.not.watercaptag(ig)) c Starting upward calculations for water : zq(ig,1,igcm_h2o_vap)=zq1temp(ig) !c Take into account H2O latent heat in surface energy budget !c We solve dT/dt = (2834.3-0.28*(T-To)-0.004*(T-To)^2)*1e3*iceflux/cpp ! tsrf_lw(ig) = ptsrf(ig) + pdtsrf(ig) *ptimestep ! ! alpha = exp(-4*abs(T1-T2)*pdqsdif(ig,igcm_h2o_ice) ! & *ptimestep/pcapcal(ig)) ! ! tsrf_lw(ig) = (tsrf_lw(ig)*(T2-alpha*T1)+T1*T2*(alpha-1)) ! & /(tsrf_lw(ig)*(1-alpha)+alpha*T2-T1) ! surface temperature at t+1 ! ! pdtsrf(ig) = (tsrf_lw(ig)-ptsrf(ig))/ptimestep if(pqsurf(ig,igcm_h2o_ice) & +pdqsdif(ig,igcm_h2o_ice)*ptimestep & .gt.frost_albedo_threshold) ! if there is still ice, T cannot exceed To & pdtsrf(ig) = min(pdtsrf(ig),(To-ptsrf(ig))/ptimestep) ! ice melt case ENDDO ! of DO ig=1,ngrid ELSE c Starting upward calculations for simple mixing of tracer (dust) DO ig=1,ngrid zq(ig,1,iq)=zc(ig,1) ENDDO END IF ! of IF ((water).and.(iq.eq.igcm_h2o_vap)) DO ilay=2,nlay DO ig=1,ngrid zq(ig,ilay,iq)=zc(ig,ilay)+zd(ig,ilay)*zq(ig,ilay-1,iq) ENDDO ENDDO enddo ! of do iq=1,nq end if ! of if(tracer) c----------------------------------------------------------------------- c 8. calcul final des tendances de la diffusion verticale c ---------------------------------------------------- DO ilev = 1, nlay DO ig=1,ngrid pdudif(ig,ilev)=( zu(ig,ilev)- $ (pu(ig,ilev)+pdufi(ig,ilev)*ptimestep) )/ptimestep pdvdif(ig,ilev)=( zv(ig,ilev)- $ (pv(ig,ilev)+pdvfi(ig,ilev)*ptimestep) )/ptimestep hh = ph(ig,ilev)+pdhfi(ig,ilev)*ptimestep $ + (latcond*dmice(ig,ilev)/cpp)/ppopsk(ig,ilev) pdhdif(ig,ilev)=( zhs(ig,ilev)- hh )/ptimestep ENDDO ENDDO if (tracer) then DO iq = 1, nq DO ilev = 1, nlay DO ig=1,ngrid pdqdif(ig,ilev,iq)=(zq(ig,ilev,iq)- $ (pq(ig,ilev,iq) + pdqfi(ig,ilev,iq)*ptimestep))/ptimestep ENDDO ENDDO ENDDO end if c ** diagnostique final c ------------------ IF(lecrit) THEN PRINT*,'In vdif' PRINT*,'Ts (t) and Ts (t+st)' WRITE(*,'(a10,3a15)') s 'theta(t)','theta(t+dt)','u(t)','u(t+dt)' PRINT*,ptsrf(ngrid/2+1),ztsrf2(ngrid/2+1) DO ilev=1,nlay WRITE(*,'(4f15.7)') s ph(ngrid/2+1,ilev),zhs(ngrid/2+1,ilev), s pu(ngrid/2+1,ilev),zu(ngrid/2+1,ilev) ENDDO ENDIF RETURN END SUBROUTINE vdifc