SUBROUTINE physiq(
     $            ngrid,nlayer,nq
     $            ,firstcall,lastcall
     $            ,pday,ptime,ptimestep
     $            ,pplev,pplay,pphi
     $            ,pu,pv,pt,pq
     $            ,pw
     $            ,pdu,pdv,pdt,pdq,pdpsrf,tracerdyn
#ifdef MESOSCALE
#include "meso_inc/meso_inc_invar.F"
#endif
     $            )

      IMPLICIT NONE
c=======================================================================
c
c   subject:
c   --------
c
c   Organisation of the physical parametrisations of the LMD 
c   martian atmospheric general circulation model.
c
c   The GCM can be run without or with tracer transport
c   depending on the value of Logical "tracer" in file  "callphys.def"
c   Tracers may be water vapor, ice OR chemical species OR dust particles
c
c   SEE comments in initracer.F about numbering of tracer species...
c
c   It includes:
c
c      1. Initialization:
c      1.1 First call initializations
c      1.2 Initialization for every call to physiq
c      1.2.5 Compute mean mass and cp, R and thermal conduction coeff.
c      2. Compute radiative transfer tendencies
c         (longwave and shortwave) for CO2 and aerosols.
c      3. Gravity wave and subgrid scale topography drag :
c      4. Vertical diffusion (turbulent mixing):
c      5. Convective adjustment
c      6. Condensation and sublimation of carbon dioxide.
c      7.  TRACERS :
c       7a. water and water ice
c       7b. call for photochemistry when tracers are chemical species
c       7c. other scheme for tracer (dust) transport (lifting, sedimentation)
c       7d. updates (CO2 pressure variations, surface budget)
c      8. Contribution to tendencies due to thermosphere
c      9. Surface and sub-surface temperature calculations
c     10. Write outputs :
c           - "startfi", "histfi" (if it's time)
c           - Saving statistics (if "callstats = .true.")
c           - Dumping eof (if "calleofdump = .true.")
c           - Output any needed variables in "diagfi" 
c     11. Diagnostic: mass conservation of tracers
c 
c   author: 
c   ------- 
c           Frederic Hourdin	15/10/93
c           Francois Forget		1994
c           Christophe Hourdin	02/1997 
c           Subroutine completly rewritten by F.Forget (01/2000)
c           Introduction of the photochemical module: S. Lebonnois (11/2002)
c           Introduction of the thermosphere module: M. Angelats i Coll (2002)
c           Water ice clouds: Franck Montmessin (update 06/2003)
c           Radiatively active tracers: J.-B. Madeleine (10/2008-06/2009)
c             Nb: See callradite.F for more information.
c           Mesoscale lines: Aymeric Spiga (2007 - 2011) -- check MESOSCALE flags
c           
c   arguments:
c   ----------
c
c   input:
c   ------
c    ecri                  period (in dynamical timestep) to write output
c    ngrid                 Size of the horizontal grid.
c                          All internal loops are performed on that grid.
c    nlayer                Number of vertical layers.
c    nq                    Number of advected fields
c    firstcall             True at the first call
c    lastcall              True at the last call
c    pday                  Number of days counted from the North. Spring
c                          equinoxe.
c    ptime                 Universal time (0<ptime<1): ptime=0.5 at 12:00 UT
c    ptimestep             timestep (s)
c    pplay(ngrid,nlayer)   Pressure at the middle of the layers (Pa)
c    pplev(ngrid,nlayer+1) intermediate pressure levels (pa)
c    pphi(ngrid,nlayer)    Geopotential at the middle of the layers (m2s-2)
c    pu(ngrid,nlayer)      u component of the wind (ms-1)
c    pv(ngrid,nlayer)      v component of the wind (ms-1)
c    pt(ngrid,nlayer)      Temperature (K)
c    pq(ngrid,nlayer,nq)   Advected fields
c    pudyn(ngrid,nlayer)    \ 
c    pvdyn(ngrid,nlayer)     \ Dynamical temporal derivative for the
c    ptdyn(ngrid,nlayer)     / corresponding variables
c    pqdyn(ngrid,nlayer,nq) /
c    pw(ngrid,?)           vertical velocity
c
c   output:
c   -------
c
c    pdu(ngrid,nlayermx)        \
c    pdv(ngrid,nlayermx)         \  Temporal derivative of the corresponding
c    pdt(ngrid,nlayermx)         /  variables due to physical processes.
c    pdq(ngrid,nlayermx,nqmx)   /
c    pdpsrf(ngrid)             /
c    tracerdyn                 call tracer in dynamical part of GCM ?

c
c=======================================================================
c
c    0.  Declarations :
c    ------------------

#include "dimensions.h"
#include "dimphys.h"
#include "comgeomfi.h"
#include "surfdat.h"
#include "comsoil.h"
#include "comdiurn.h"
#include "callkeys.h"
#include "comcstfi.h"
#include "planete.h"
#include "comsaison.h"
#include "control.h"
#include "dimradmars.h"
#include "comg1d.h"
#include "tracer.h"
#include "nlteparams.h"

#include "chimiedata.h"
#include "watercap.h"
#include "param.h"
#include "param_v3.h"
#include "conc.h"

#include "netcdf.inc"

#include "slope.h"

#ifdef MESOSCALE
#include "wrf_output_2d.h"
#include "wrf_output_3d.h"
#include "advtrac.h"   !!! this is necessary for tracers (in dyn3d)
#include "meso_inc/meso_inc_var.F"
#endif

c Arguments :
c -----------

c   inputs:
c   -------
      INTEGER ngrid,nlayer,nq
      REAL ptimestep
      REAL pplev(ngridmx,nlayer+1),pplay(ngridmx,nlayer)
      REAL pphi(ngridmx,nlayer)
      REAL pu(ngridmx,nlayer),pv(ngridmx,nlayer)
      REAL pt(ngridmx,nlayer),pq(ngridmx,nlayer,nq)
      REAL pw(ngridmx,nlayer) !Mars pvervel transmit par dyn3d
      REAL zh(ngridmx,nlayermx)      ! potential temperature (K)
      LOGICAL firstcall,lastcall

      REAL pday
      REAL ptime 
      logical tracerdyn

c   outputs:
c   --------
c     physical tendencies
      REAL pdu(ngridmx,nlayer),pdv(ngridmx,nlayer)
      REAL pdt(ngridmx,nlayer),pdq(ngridmx,nlayer,nq)
      REAL pdpsrf(ngridmx) ! surface pressure tendency


c Local saved variables:
c ----------------------
c     aerosol (dust or ice) extinction optical depth  at reference wavelength 
c     "longrefvis" set in dimradmars.h , for one of the "naerkind"  kind of
c      aerosol optical properties  :
      REAL aerosol(ngridmx,nlayermx,naerkind)

      INTEGER day_ini  ! Initial date of the run (sol since Ls=0) 
      INTEGER icount     ! counter of calls to physiq during the run.
      REAL tsurf(ngridmx)            ! Surface temperature (K)
      REAL tsoil(ngridmx,nsoilmx)    ! sub-surface temperatures (K)
      REAL co2ice(ngridmx)           ! co2 ice surface layer (kg.m-2)  
      REAL albedo(ngridmx,2)         ! Surface albedo in each solar band
      REAL emis(ngridmx)             ! Thermal IR surface emissivity
      REAL dtrad(ngridmx,nlayermx)   ! Net atm. radiative heating rate (K.s-1)
      REAL fluxrad_sky(ngridmx)      ! rad. flux from sky absorbed by surface (W.m-2)
      REAL fluxrad(ngridmx)          ! Net radiative surface flux (W.m-2)
      REAL capcal(ngridmx)           ! surface heat capacity (J m-2 K-1)
      REAL fluxgrd(ngridmx)          ! surface conduction flux (W.m-2)
      REAL qsurf(ngridmx,nqmx)       ! tracer on surface (e.g. kg.m-2)
      REAL q2(ngridmx,nlayermx+1)    ! Turbulent Kinetic Energy 

c     Variables used by the water ice microphysical scheme:
      REAL rice(ngridmx,nlayermx)    ! Water ice geometric mean radius (m)
      REAL nuice(ngridmx,nlayermx)   ! Estimated effective variance
                                     !   of the size distribution
c     Albedo of deposited surface ice
      !!REAL, PARAMETER :: alb_surfice = 0.4 ! 0.45
      REAL, PARAMETER :: alb_surfice = 0.45 !!TESTS_JB 

c     Variables used by the slope model
      REAL sl_ls, sl_lct, sl_lat
      REAL sl_tau, sl_alb, sl_the, sl_psi
      REAL sl_fl0, sl_flu
      REAL sl_ra, sl_di0
      REAL sky

      SAVE day_ini, icount
      SAVE aerosol, tsurf,tsoil
      SAVE co2ice,albedo,emis, q2
      SAVE capcal,fluxgrd,dtrad,fluxrad,fluxrad_sky,qsurf

      REAL stephan   
      DATA stephan/5.67e-08/  ! Stephan Boltzman constant
      SAVE stephan

c Local variables :
c -----------------

      REAL CBRT
      EXTERNAL CBRT

      CHARACTER*80 fichier 
      INTEGER l,ig,ierr,igout,iq,i, tapphys

      REAL fluxsurf_lw(ngridmx)      !incident LW (IR) surface flux (W.m-2)
      REAL fluxsurf_sw(ngridmx,2)    !incident SW (solar) surface flux (W.m-2)
      REAL fluxtop_lw(ngridmx)       !Outgoing LW (IR) flux to space (W.m-2)
      REAL fluxtop_sw(ngridmx,2)     !Outgoing SW (solar) flux to space (W.m-2)
      REAL tauref(ngridmx)           ! Reference column optical depth at 700 Pa
                                     ! (used if active=F) 
      REAL tau(ngridmx,naerkind)     ! Column dust optical depth at each point
      REAL zls                       !  solar longitude (rad)
      REAL zday                      ! date (time since Ls=0, in martian days)
      REAL zzlay(ngridmx,nlayermx)   ! altitude at the middle of the layers
      REAL zzlev(ngridmx,nlayermx+1) ! altitude at layer boundaries
      REAL latvl1,lonvl1             ! Viking Lander 1 point (for diagnostic)

c     Tendancies due to various processes:
      REAL dqsurf(ngridmx,nqmx)
      REAL zdtlw(ngridmx,nlayermx)     ! (K/s)
      REAL zdtsw(ngridmx,nlayermx)     ! (K/s)
      REAL cldtlw(ngridmx,nlayermx)     ! (K/s) LW heating rate for clear area
      REAL cldtsw(ngridmx,nlayermx)     ! (K/s) SW heating rate for clear area
      REAL zdtnirco2(ngridmx,nlayermx) ! (K/s)
      REAL zdtnlte(ngridmx,nlayermx)   ! (K/s)
      REAL zdtsurf(ngridmx)            ! (K/s)
      REAL zdtcloud(ngridmx,nlayermx)
      REAL zdvdif(ngridmx,nlayermx),zdudif(ngridmx,nlayermx)  ! (m.s-2)
      REAL zdhdif(ngridmx,nlayermx), zdtsdif(ngridmx)         ! (K/s)
      REAL zdvadj(ngridmx,nlayermx),zduadj(ngridmx,nlayermx)  ! (m.s-2)
      REAL zdhadj(ngridmx,nlayermx)                           ! (K/s)
      REAL zdtgw(ngridmx,nlayermx)                            ! (K/s)
      REAL zdugw(ngridmx,nlayermx),zdvgw(ngridmx,nlayermx)    ! (m.s-2)
      REAL zdtc(ngridmx,nlayermx),zdtsurfc(ngridmx)
      REAL zdvc(ngridmx,nlayermx),zduc(ngridmx,nlayermx)

      REAL zdqdif(ngridmx,nlayermx,nqmx), zdqsdif(ngridmx,nqmx)
      REAL zdqsed(ngridmx,nlayermx,nqmx), zdqssed(ngridmx,nqmx)
      REAL zdqdev(ngridmx,nlayermx,nqmx), zdqsdev(ngridmx,nqmx)
      REAL zdqadj(ngridmx,nlayermx,nqmx)
      REAL zdqc(ngridmx,nlayermx,nqmx)
      REAL zdqcloud(ngridmx,nlayermx,nqmx)
      REAL zdqscloud(ngridmx,nqmx)
      REAL zdqchim(ngridmx,nlayermx,nqmx)
      REAL zdqschim(ngridmx,nqmx)

      REAL zdteuv(ngridmx,nlayermx)    ! (K/s)
      REAL zdtconduc(ngridmx,nlayermx) ! (K/s)
      REAL zdumolvis(ngridmx,nlayermx)
      REAL zdvmolvis(ngridmx,nlayermx)
      real zdqmoldiff(ngridmx,nlayermx,nqmx)

c     Local variable for local intermediate calcul:
      REAL zflubid(ngridmx)
      REAL zplanck(ngridmx),zpopsk(ngridmx,nlayermx)
      REAL zdum1(ngridmx,nlayermx)
      REAL zdum2(ngridmx,nlayermx)
      REAL ztim1,ztim2,ztim3, z1,z2
      REAL ztime_fin
      REAL zdh(ngridmx,nlayermx)
      INTEGER length
      PARAMETER (length=100)

c local variables only used for diagnostic (output in file "diagfi" or "stats")
c -----------------------------------------------------------------------------
      REAL ps(ngridmx), zt(ngridmx,nlayermx)
      REAL zu(ngridmx,nlayermx),zv(ngridmx,nlayermx)
      REAL zq(ngridmx,nlayermx,nqmx)
      REAL fluxtop_sw_tot(ngridmx), fluxsurf_sw_tot(ngridmx)
      character*2 str2
      character*5 str5
      real zdtdif(ngridmx,nlayermx), zdtadj(ngridmx,nlayermx)
      REAL ccn(ngridmx,nlayermx)   ! Cloud condensation nuclei
                                   !   (particules kg-1)
      SAVE ccn  !! in case iradia != 1
      real rdust(ngridmx,nlayermx) ! dust geometric mean radius (m)
      real qtot1,qtot2 ! total aerosol mass
      integer igmin, lmin
      logical tdiag

      real co2col(ngridmx)        ! CO2 column
      REAL zplev(ngrid,nlayermx+1),zplay(ngrid,nlayermx)
      REAL zstress(ngrid), cd
      real hco2(nqmx),tmean, zlocal(nlayermx)
      real rho(ngridmx,nlayermx)  ! density
      real vmr(ngridmx,nlayermx)  ! volume mixing ratio
      REAL mtot(ngridmx)          ! Total mass of water vapor (kg/m2)
      REAL icetot(ngridmx)        ! Total mass of water ice (kg/m2)
      REAL rave(ngridmx)          ! Mean water ice effective radius (m)
      REAL opTES(ngridmx,nlayermx)! abs optical depth at 825 cm-1
      REAL tauTES(ngridmx)        ! column optical depth at 825 cm-1
      REAL Qabsice                ! Water ice absorption coefficient


      REAL time_phys

c Variables from thermal

      REAL lmax_th_out(ngridmx),zmax_th(ngridmx)
      REAL wmax_th(ngridmx)
      REAL, SAVE :: hfmax_th(ngridmx)
      REAL pdu_th(ngridmx,nlayermx),pdv_th(ngridmx,nlayermx)
      REAL pdt_th(ngridmx,nlayermx),pdq_th(ngridmx,nlayermx,nqmx)
      INTEGER lmax_th(ngridmx)
      REAL dtke_th(ngridmx,nlayermx+1)
      REAL dummycol(ngridmx)

c=======================================================================

c 1. Initialisation:
c -----------------

c  1.1   Initialisation only at first call
c  ---------------------------------------
      IF (firstcall) THEN

c        variables set to 0
c        ~~~~~~~~~~~~~~~~~~
         call zerophys(ngrid*nlayer*naerkind,aerosol)
         call zerophys(ngrid*nlayer,dtrad)
         call zerophys(ngrid,fluxrad)

c        read startfi 
c        ~~~~~~~~~~~~
#ifndef MESOSCALE
! Read netcdf initial physical parameters.
         CALL phyetat0 ("startfi.nc",0,0,
     &         nsoilmx,nq,
     &         day_ini,time_phys,
     &         tsurf,tsoil,emis,q2,qsurf,co2ice)
#else
#include "meso_inc/meso_inc_ini.F"
#endif

         if (pday.ne.day_ini) then
           write(*,*) "PHYSIQ: ERROR: bad synchronization between ",
     &                "physics and dynamics"
           write(*,*) "dynamics day: ",pday
           write(*,*) "physics day:  ",day_ini
           stop
         endif

         write (*,*) 'In physiq day_ini =', day_ini

c        Initialize albedo and orbital calculation
c        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
         CALL surfini(ngrid,co2ice,qsurf,albedo)
         CALL iniorbit(aphelie,periheli,year_day,peri_day,obliquit)

c        initialize soil 
c        ~~~~~~~~~~~~~~~
         IF (callsoil) THEN
            CALL soil(ngrid,nsoilmx,firstcall,inertiedat,
     s          ptimestep,tsurf,tsoil,capcal,fluxgrd)
         ELSE
            PRINT*,
     &     'PHYSIQ WARNING! Thermal conduction in the soil turned off'
            DO ig=1,ngrid
               capcal(ig)=1.e5
               fluxgrd(ig)=0.
            ENDDO
         ENDIF
         icount=1


c        initialize tracers
c        ~~~~~~~~~~~~~~~~~~
         tracerdyn=tracer
         IF (tracer) THEN
            CALL initracer(qsurf,co2ice)
         ENDIF  ! end tracer

#ifdef MESOSCALE
#include "meso_inc/meso_inc_caps.F"
#endif

#ifndef MESOSCALE
c        Initialize thermospheric parameters
c        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

         if (callthermos) call param_read
#endif
c        Initialize R and Cp as constant

         if (.not.callthermos .and. .not.photochem) then
                 do l=1,nlayermx
                  do ig=1,ngridmx
                   rnew(ig,l)=r
                   cpnew(ig,l)=cpp
                   mmean(ig,l)=mugaz
                   enddo
                  enddo  
         endif         

        IF (tracer.AND.water.AND.(ngridmx.NE.1)) THEN
          write(*,*)"physiq: water_param Surface ice alb:",alb_surfice
        ENDIF
                   
      ENDIF        !  (end of "if firstcall")

c ---------------------------------------------------
c 1.2   Initializations done at every physical timestep:
c ---------------------------------------------------
c
      IF (ngrid.NE.ngridmx) THEN
         PRINT*,'STOP in PHYSIQ'
         PRINT*,'Probleme de dimensions :'
         PRINT*,'ngrid     = ',ngrid
         PRINT*,'ngridmx   = ',ngridmx
         STOP
      ENDIF

c     Initialize various variables
c     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      call zerophys(ngrid*nlayer, pdv)
      call zerophys(ngrid*nlayer, pdu)
      call zerophys(ngrid*nlayer, pdt)
      call zerophys(ngrid*nlayer*nq, pdq)
      call zerophys(ngrid, pdpsrf)
      call zerophys(ngrid, zflubid)
      call zerophys(ngrid, zdtsurf)
      call zerophys(ngrid*nq, dqsurf)
      igout=ngrid/2+1 


      zday=pday+ptime ! compute time, in sols (and fraction thereof)

c     Compute Solar Longitude (Ls) :
c     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      if (season) then
         call solarlong(zday,zls)
      else
         call solarlong(float(day_ini),zls)
      end if

c     Compute geopotential at interlayers
c     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
c     ponderation des altitudes au niveau des couches en dp/p

      DO l=1,nlayer
         DO ig=1,ngrid
            zzlay(ig,l)=pphi(ig,l)/g
         ENDDO
      ENDDO
      DO ig=1,ngrid
         zzlev(ig,1)=0.
         zzlev(ig,nlayer+1)=1.e7    ! dummy top of last layer above 10000 km...
      ENDDO
      DO l=2,nlayer
         DO ig=1,ngrid
            z1=(pplay(ig,l-1)+pplev(ig,l))/(pplay(ig,l-1)-pplev(ig,l))
            z2=(pplev(ig,l)+pplay(ig,l))/(pplev(ig,l)-pplay(ig,l))
            zzlev(ig,l)=(z1*zzlay(ig,l-1)+z2*zzlay(ig,l))/(z1+z2)
         ENDDO
      ENDDO


!     Potential temperature calculation not the same in physiq and dynamic

c     Compute potential temperature
c     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      DO l=1,nlayer
         DO ig=1,ngrid 
            zpopsk(ig,l)=(pplay(ig,l)/pplev(ig,1))**rcp
            zh(ig,l)=pt(ig,l)/zpopsk(ig,l)
         ENDDO
      ENDDO

#ifndef MESOSCALE
c-----------------------------------------------------------------------
c    1.2.5 Compute mean mass, cp, and R
c    --------------------------------

      if(photochem.or.callthermos) then
         call concentrations(pplay,pt,pdt,pq,pdq,ptimestep)
      endif
#endif
c-----------------------------------------------------------------------
c    2. Compute radiative tendencies :
c------------------------------------


      IF (callrad) THEN
         IF( MOD(icount-1,iradia).EQ.0) THEN

c          Local Solar zenith angle
c          ~~~~~~~~~~~~~~~~~~~~~~~~
           CALL orbite(zls,dist_sol,declin)

           IF(diurnal) THEN
               ztim1=SIN(declin)
               ztim2=COS(declin)*COS(2.*pi*(zday-.5))
               ztim3=-COS(declin)*SIN(2.*pi*(zday-.5))

               CALL solang(ngrid,sinlon,coslon,sinlat,coslat,
     s         ztim1,ztim2,ztim3, mu0,fract)

           ELSE
               CALL mucorr(ngrid,declin, lati, mu0, fract,10000.,rad)
           ENDIF

c          NLTE cooling from CO2 emission
c          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

           IF(callnlte) CALL nltecool(ngrid,nlayer,pplay,pt,zdtnlte)

c          Find number of layers for LTE radiation calculations
           IF(MOD(iphysiq*(icount-1),day_step).EQ.0)
     &          CALL nlthermeq(ngrid,nlayer,pplev,pplay)

c          Note: Dustopacity.F has been transferred to callradite.F
         
c          Call main radiative transfer scheme
c          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
c          Transfer through CO2 (except NIR CO2 absorption)
c            and aerosols (dust and water ice)

c          Radiative transfer
c          ------------------

           CALL callradite(icount,ngrid,nlayer,nq,zday,zls,pq,albedo,
     $     emis,mu0,pplev,pplay,pt,tsurf,fract,dist_sol,igout,
     $     zdtlw,zdtsw,fluxsurf_lw,fluxsurf_sw,fluxtop_lw,fluxtop_sw,
     &     tauref,tau,aerosol,ccn,rdust,rice,nuice)

c          Outputs for basic check (middle of domain)
c          ------------------------------------------
           print*, 'check lat lon', lati(igout)*180/pi,
     .                              long(igout)*180/pi
           print*, 'Ls =',zls*180./pi
           print*, 'tauref(700 Pa) =',tauref(igout)
           print*, 'tau(700 Pa) =',tau(igout,1)*700./pplev(igout,1)

c          ---------------------------------------------------------
c          Call slope parameterization for direct and scattered flux
c          ---------------------------------------------------------
           IF(callslope) THEN
            print *, 'Slope scheme is on and computing...'
            DO ig=1,ngrid  
              sl_the = theta_sl(ig)
              IF (sl_the .ne. 0.) THEN
                ztim1=fluxsurf_sw(ig,1)+fluxsurf_sw(ig,2)
                DO l=1,2
                 sl_lct = ptime*24. + 180.*long(ig)/pi/15.
                 sl_ra  = pi*(1.0-sl_lct/12.)
                 sl_lat = 180.*lati(ig)/pi
                 sl_tau = tau(ig,1)
                 sl_alb = albedo(ig,l)
                 sl_psi = psi_sl(ig)
                 sl_fl0 = fluxsurf_sw(ig,l)
                 sl_di0 = 0.
                 if (mu0(ig) .gt. 0.) then
                  sl_di0 = mu0(ig)*(exp(-sl_tau/mu0(ig)))
                  sl_di0 = sl_di0*1370./dist_sol/dist_sol
                  sl_di0 = sl_di0/ztim1
                  sl_di0 = fluxsurf_sw(ig,l)*sl_di0
                 endif
                 ! you never know (roundup concern...)
                 if (sl_fl0 .lt. sl_di0) sl_di0=sl_fl0
                 !!!!!!!!!!!!!!!!!!!!!!!!!!
                 CALL param_slope( mu0(ig), declin, sl_ra, sl_lat, 
     &                             sl_tau, sl_alb, sl_the, sl_psi,
     &                             sl_di0, sl_fl0, sl_flu )
                 !!!!!!!!!!!!!!!!!!!!!!!!!!
                 fluxsurf_sw(ig,l) = sl_flu
                ENDDO
              !!! compute correction on IR flux as well
              sky= (1.+cos(pi*theta_sl(ig)/180.))/2.
              fluxsurf_lw(ig)= fluxsurf_lw(ig)*sky
              ENDIF
            ENDDO
           ENDIF

c          CO2 near infrared absorption
c          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
           call zerophys(ngrid*nlayer,zdtnirco2)
           if (callnirco2) then
              call nirco2abs (ngrid,nlayer,pplay,dist_sol,
     .                       mu0,fract,declin, zdtnirco2)
           endif

c          Radiative flux from the sky absorbed by the surface (W.m-2)
c          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
           DO ig=1,ngrid
               fluxrad_sky(ig)=emis(ig)*fluxsurf_lw(ig)
     $         +fluxsurf_sw(ig,1)*(1.-albedo(ig,1))
     $         +fluxsurf_sw(ig,2)*(1.-albedo(ig,2))
           ENDDO


c          Net atmospheric radiative heating rate (K.s-1)
c          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
           IF(callnlte) THEN
              CALL blendrad(ngrid, nlayer, pplay,
     &             zdtsw, zdtlw, zdtnirco2, zdtnlte, dtrad)
           ELSE
              DO l=1,nlayer
                 DO ig=1,ngrid
                    dtrad(ig,l)=zdtsw(ig,l)+zdtlw(ig,l)
     &                          +zdtnirco2(ig,l)
                  ENDDO
              ENDDO
           ENDIF

        ENDIF ! of if(mod(icount-1,iradia).eq.0)

c    Transformation of the radiative tendencies:
c    -------------------------------------------

c          Net radiative surface flux (W.m-2)
c          ~~~~~~~~~~~~~~~~~~~~~~~~~~
c
           DO ig=1,ngrid
               zplanck(ig)=tsurf(ig)*tsurf(ig)
               zplanck(ig)=emis(ig)*
     $         stephan*zplanck(ig)*zplanck(ig)
               fluxrad(ig)=fluxrad_sky(ig)-zplanck(ig)
               IF(callslope) THEN
                 sky= (1.+cos(pi*theta_sl(ig)/180.))/2.
                 fluxrad(ig)=fluxrad(ig)+(1.-sky)*zplanck(ig)
               ENDIF
           ENDDO

         DO l=1,nlayer
            DO ig=1,ngrid
               pdt(ig,l)=pdt(ig,l)+dtrad(ig,l)
            ENDDO
         ENDDO

      ENDIF ! of IF (callrad)

c-----------------------------------------------------------------------
c    3. Gravity wave and subgrid scale topography drag :
c    -------------------------------------------------


      IF(calllott)THEN

        CALL calldrag_noro(ngrid,nlayer,ptimestep,
     &                 pplay,pplev,pt,pu,pv,zdtgw,zdugw,zdvgw)
 
        DO l=1,nlayer
          DO ig=1,ngrid
            pdv(ig,l)=pdv(ig,l)+zdvgw(ig,l)
            pdu(ig,l)=pdu(ig,l)+zdugw(ig,l)
            pdt(ig,l)=pdt(ig,l)+zdtgw(ig,l)
          ENDDO
        ENDDO
      ENDIF

c-----------------------------------------------------------------------
c    4. Vertical diffusion (turbulent mixing):
c    -----------------------------------------

      IF (calldifv) THEN

         DO ig=1,ngrid
            zflubid(ig)=fluxrad(ig)+fluxgrd(ig)
         ENDDO

         CALL zerophys(ngrid*nlayer,zdum1)
         CALL zerophys(ngrid*nlayer,zdum2)
         do l=1,nlayer
            do ig=1,ngrid
               zdh(ig,l)=pdt(ig,l)/zpopsk(ig,l)
            enddo
         enddo

c        Calling vdif (Martian version WITH CO2 condensation)
         CALL vdifc(ngrid,nlayer,nq,co2ice,zpopsk,
     $        ptimestep,capcal,lwrite,
     $        pplay,pplev,zzlay,zzlev,z0,
     $        pu,pv,zh,pq,tsurf,emis,qsurf,
     $        zdum1,zdum2,zdh,pdq,zflubid,
     $        zdudif,zdvdif,zdhdif,zdtsdif,q2,
     &        zdqdif,zdqsdif)

#ifdef MESOSCALE
#include "meso_inc/meso_inc_les.F"
#endif
         DO l=1,nlayer
            DO ig=1,ngrid
               pdv(ig,l)=pdv(ig,l)+zdvdif(ig,l)
               pdu(ig,l)=pdu(ig,l)+zdudif(ig,l)
               pdt(ig,l)=pdt(ig,l)+zdhdif(ig,l)*zpopsk(ig,l)

               zdtdif(ig,l)=zdhdif(ig,l)*zpopsk(ig,l) ! for diagnostic only

            ENDDO
         ENDDO

          DO ig=1,ngrid
             zdtsurf(ig)=zdtsurf(ig)+zdtsdif(ig)
          ENDDO

         if (tracer) then 
           DO iq=1, nq
            DO l=1,nlayer
              DO ig=1,ngrid
                 pdq(ig,l,iq)=pdq(ig,l,iq)+ zdqdif(ig,l,iq) 
              ENDDO
            ENDDO
           ENDDO
           DO iq=1, nq
              DO ig=1,ngrid
                 dqsurf(ig,iq)=dqsurf(ig,iq) + zdqsdif(ig,iq)
              ENDDO
           ENDDO
         end if ! of if (tracer)

      ELSE    
         DO ig=1,ngrid
            zdtsurf(ig)=zdtsurf(ig)+
     s      (fluxrad(ig)+fluxgrd(ig))/capcal(ig)
         ENDDO
#ifdef MESOSCALE
         IF (flag_LES) THEN
            write(*,*) 'LES mode !' 
            write(*,*) 'Please set calldifv to T in callphys.def'
            STOP
         ENDIF
#endif
      ENDIF ! of IF (calldifv)

c-----------------------------------------------------------------------
c   TEST. Thermals :
c HIGHLY EXPERIMENTAL, BEWARE !!
c   -----------------------------
 
      if(calltherm) then
 
        call calltherm_interface(firstcall,
     $ long,lati,zzlev,zzlay,
     $ ptimestep,pu,pv,pt,pq,pdu,pdv,pdt,pdq,q2,
     $ pplay,pplev,pphi,zpopsk,
     $ pdu_th,pdv_th,pdt_th,pdq_th,lmax_th,zmax_th,
     $ dtke_th,hfmax_th,wmax_th)
 
         DO l=1,nlayer
           DO ig=1,ngrid
              pdu(ig,l)=pdu(ig,l)+pdu_th(ig,l)
              pdv(ig,l)=pdv(ig,l)+pdv_th(ig,l)
              pdt(ig,l)=pdt(ig,l)+pdt_th(ig,l)
              q2(ig,l)=q2(ig,l)+dtke_th(ig,l)*ptimestep
           ENDDO
        ENDDO
 
        DO ig=1,ngrid
          q2(ig,nlayer+1)=q2(ig,nlayer+1)+dtke_th(ig,nlayer+1)*ptimestep
        ENDDO      
    
        if (tracer) then
        DO iq=1,nq
         DO l=1,nlayer
           DO ig=1,ngrid
             pdq(ig,l,iq)=pdq(ig,l,iq)+pdq_th(ig,l,iq)
           ENDDO
         ENDDO
        ENDDO
        endif

        else   !of if calltherm
        lmax_th(:)=0
        end if

c-----------------------------------------------------------------------
c   5. Dry convective adjustment:
c   -----------------------------

      IF(calladj) THEN

         DO l=1,nlayer
            DO ig=1,ngrid
               zdh(ig,l)=pdt(ig,l)/zpopsk(ig,l)
            ENDDO
         ENDDO
         CALL zerophys(ngrid*nlayer,zduadj)
         CALL zerophys(ngrid*nlayer,zdvadj)
         CALL zerophys(ngrid*nlayer,zdhadj)

         CALL convadj(ngrid,nlayer,nq,ptimestep,
     $                pplay,pplev,zpopsk,lmax_th,
     $                pu,pv,zh,pq,
     $                pdu,pdv,zdh,pdq,
     $                zduadj,zdvadj,zdhadj,
     $                zdqadj)


         DO l=1,nlayer
            DO ig=1,ngrid
               pdu(ig,l)=pdu(ig,l)+zduadj(ig,l)
               pdv(ig,l)=pdv(ig,l)+zdvadj(ig,l)
               pdt(ig,l)=pdt(ig,l)+zdhadj(ig,l)*zpopsk(ig,l)

               zdtadj(ig,l)=zdhadj(ig,l)*zpopsk(ig,l) ! for diagnostic only
            ENDDO
         ENDDO

         if(tracer) then 
           DO iq=1, nq
            DO l=1,nlayer
              DO ig=1,ngrid
                 pdq(ig,l,iq)=pdq(ig,l,iq)+ zdqadj(ig,l,iq) 
              ENDDO
            ENDDO
           ENDDO
         end if
      ENDIF ! of IF(calladj)

c-----------------------------------------------------------------------
c   6. Carbon dioxide condensation-sublimation:
c   -------------------------------------------

      IF (callcond) THEN
         CALL newcondens(ngrid,nlayer,nq,ptimestep,
     $              capcal,pplay,pplev,tsurf,pt,
     $              pphi,pdt,pdu,pdv,zdtsurf,pu,pv,pq,pdq,
     $              co2ice,albedo,emis,
     $              zdtc,zdtsurfc,pdpsrf,zduc,zdvc,zdqc,
     $              fluxsurf_sw,zls) 

         DO l=1,nlayer
           DO ig=1,ngrid
             pdt(ig,l)=pdt(ig,l)+zdtc(ig,l)
             pdv(ig,l)=pdv(ig,l)+zdvc(ig,l)
             pdu(ig,l)=pdu(ig,l)+zduc(ig,l)
           ENDDO
         ENDDO
         DO ig=1,ngrid
            zdtsurf(ig) = zdtsurf(ig) + zdtsurfc(ig)
         ENDDO

         IF (tracer) THEN
           DO iq=1, nq
            DO l=1,nlayer
              DO ig=1,ngrid
                pdq(ig,l,iq)=pdq(ig,l,iq)+ zdqc(ig,l,iq) 
              ENDDO
            ENDDO
           ENDDO
         ENDIF ! of IF (tracer)

      ENDIF  ! of IF (callcond)

c-----------------------------------------------------------------------
c   7. Specific parameterizations for tracers 
c:   -----------------------------------------

      if (tracer) then 

c   7a. Water and ice
c     ---------------

c        ---------------------------------------
c        Water ice condensation in the atmosphere
c        ----------------------------------------
         IF (water) THEN

           call watercloud(ngrid,nlayer,ptimestep,
     &                pplev,pplay,pdpsrf,zzlev,zzlay, pt,pdt,
     &                pq,pdq,zdqcloud,zdqscloud,zdtcloud,
     &                nq,naerkind,tau,
     &                ccn,rdust,rice,nuice)
           if (activice) then
c Temperature variation due to latent heat release
           DO l=1,nlayer
             DO ig=1,ngrid
               pdt(ig,l)=pdt(ig,l)+zdtcloud(ig,l)
             ENDDO
           ENDDO
           endif

! increment water vapour and ice atmospheric tracers tendencies
           IF (water) THEN
             DO l=1,nlayer
               DO ig=1,ngrid
                 pdq(ig,l,igcm_h2o_vap)=pdq(ig,l,igcm_h2o_vap)+
     &                                   zdqcloud(ig,l,igcm_h2o_vap)
                 pdq(ig,l,igcm_h2o_ice)=pdq(ig,l,igcm_h2o_ice)+
     &                                   zdqcloud(ig,l,igcm_h2o_ice)
               ENDDO
             ENDDO
           ENDIF ! of IF (water) THEN
! Increment water ice surface tracer tendency
         DO ig=1,ngrid
           dqsurf(ig,igcm_h2o_ice)=dqsurf(ig,igcm_h2o_ice)+
     &                               zdqscloud(ig,igcm_h2o_ice)
         ENDDO
         
         END IF  ! of IF (water)

c   7b. Chemical species
c     ------------------

#ifndef MESOSCALE
c        --------------
c        photochemistry :
c        --------------
         IF (photochem .or. thermochem) then
          call calchim(ptimestep,pplay,pplev,pt,pdt,dist_sol,mu0,
     &      zzlay,zday,pq,pdq,rice,
     &      zdqchim,zdqschim,zdqcloud,zdqscloud)
!NB: Photochemistry includes condensation of H2O2

           ! increment values of tracers:
           DO iq=1,nq ! loop on all tracers; tendencies for non-chemistry
                      ! tracers is zero anyways
             DO l=1,nlayer
               DO ig=1,ngrid
                 pdq(ig,l,iq)=pdq(ig,l,iq)+zdqchim(ig,l,iq)
               ENDDO
             ENDDO
           ENDDO ! of DO iq=1,nq
           ! add condensation tendency for H2O2
           if (igcm_h2o2.ne.0) then
             DO l=1,nlayer
               DO ig=1,ngrid
                 pdq(ig,l,igcm_h2o2)=pdq(ig,l,igcm_h2o2)
     &                                +zdqcloud(ig,l,igcm_h2o2)
               ENDDO
             ENDDO
           endif

           ! increment surface values of tracers:
           DO iq=1,nq ! loop on all tracers; tendencies for non-chemistry
                      ! tracers is zero anyways
             DO ig=1,ngrid
               dqsurf(ig,iq)=dqsurf(ig,iq)+zdqschim(ig,iq)
             ENDDO
           ENDDO ! of DO iq=1,nq
           ! add condensation tendency for H2O2
           if (igcm_h2o2.ne.0) then
             DO ig=1,ngrid
               dqsurf(ig,igcm_h2o2)=dqsurf(ig,igcm_h2o2)
     &                                +zdqscloud(ig,igcm_h2o2)
             ENDDO
           endif

         END IF  ! of IF (photochem.or.thermochem)
#endif

c   7c. Aerosol particles
c     -------------------

c        ----------
c        Dust devil :
c        ----------
         IF(callddevil) then 
           call dustdevil(ngrid,nlayer,nq, pplev,pu,pv,pt, tsurf,q2,
     &                zdqdev,zdqsdev)
 
           if (dustbin.ge.1) then
              do iq=1,nq
                 DO l=1,nlayer
                    DO ig=1,ngrid
                       pdq(ig,l,iq)=pdq(ig,l,iq)+ zdqdev(ig,l,iq)
                    ENDDO
                 ENDDO
              enddo
              do iq=1,nq
                 DO ig=1,ngrid
                    dqsurf(ig,iq)= dqsurf(ig,iq) + zdqsdev(ig,iq)
                 ENDDO
              enddo
           endif  ! of if (dustbin.ge.1)

         END IF ! of IF (callddevil)

c        ------------- 
c        Sedimentation :   acts also on water ice
c        ------------- 
         IF (sedimentation) THEN 
           !call zerophys(ngrid*nlayer*nq, zdqsed)
           zdqsed(1:ngrid,1:nlayer,1:nq)=0
           !call zerophys(ngrid*nq, zdqssed)
           zdqssed(1:ngrid,1:nq)=0

           call callsedim(ngrid,nlayer, ptimestep,
     &                pplev,zzlev, pt, rdust, rice,
     &                pq, pdq, zdqsed, zdqssed,nq)

           DO iq=1, nq
             DO l=1,nlayer
               DO ig=1,ngrid
                    pdq(ig,l,iq)=pdq(ig,l,iq)+ zdqsed(ig,l,iq)
               ENDDO
             ENDDO
           ENDDO
           DO iq=1, nq
             DO ig=1,ngrid
                dqsurf(ig,iq)= dqsurf(ig,iq) + zdqssed(ig,iq)
             ENDDO
           ENDDO
         END IF   ! of IF (sedimentation)

c   7d. Updates
c     ---------

        DO iq=1, nq
          DO ig=1,ngrid

c       ---------------------------------
c       Updating tracer budget on surface
c       ---------------------------------
            qsurf(ig,iq)=qsurf(ig,iq)+ptimestep*dqsurf(ig,iq)

          ENDDO  ! (ig)
        ENDDO    ! (iq)

      endif !  of if (tracer) 

#ifndef MESOSCALE
c-----------------------------------------------------------------------
c   8. THERMOSPHERE CALCULATION
c-----------------------------------------------------------------------

      if (callthermos) then
        call thermosphere(pplev,pplay,dist_sol,
     $     mu0,ptimestep,ptime,zday,tsurf,zzlev,zzlay,
     &     pt,pq,pu,pv,pdt,pdq,
     $     zdteuv,zdtconduc,zdumolvis,zdvmolvis,zdqmoldiff)

        DO l=1,nlayer
          DO ig=1,ngrid
            dtrad(ig,l)=dtrad(ig,l)+zdteuv(ig,l)
            pdt(ig,l)=pdt(ig,l)+zdtconduc(ig,l)
     &                         +zdteuv(ig,l)
            pdv(ig,l)=pdv(ig,l)+zdvmolvis(ig,l)
            pdu(ig,l)=pdu(ig,l)+zdumolvis(ig,l)
            DO iq=1, nq
              pdq(ig,l,iq)=pdq(ig,l,iq)+zdqmoldiff(ig,l,iq)
            ENDDO
          ENDDO
        ENDDO

      endif ! of if (callthermos)
#endif

c-----------------------------------------------------------------------
c   9. Surface  and sub-surface soil temperature
c-----------------------------------------------------------------------
c
c
c   9.1 Increment Surface temperature:
c   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

      DO ig=1,ngrid
         tsurf(ig)=tsurf(ig)+ptimestep*zdtsurf(ig) 
      ENDDO

c  Prescribe a cold trap at south pole (except at high obliquity !!)
c  Temperature at the surface is set there to be the temperature
c  corresponding to equilibrium temperature between phases of CO2

      IF (tracer.AND.water.AND.(ngridmx.NE.1)) THEN
#ifndef MESOSCALE
         if (caps.and.(obliquit.lt.27.)) then
           ! NB: Updated surface pressure, at grid point 'ngrid', is
           !     ps(ngrid)=pplev(ngrid,1)+pdpsrf(ngrid)*ptimestep
           tsurf(ngrid)=1./(1./136.27-r/5.9e+5*alog(0.0095*
     &                     (pplev(ngrid,1)+pdpsrf(ngrid)*ptimestep)))
         endif
#endif
c       -------------------------------------------------------------
c       Change of surface albedo (set to 0.4) in case of ground frost
c       everywhere except on the north permanent cap and in regions
c       covered by dry ice. 
c              ALWAYS PLACE these lines after newcondens !!!
c       -------------------------------------------------------------
         do ig=1,ngrid
           if ((co2ice(ig).eq.0).and.
     &        (qsurf(ig,igcm_h2o_ice).gt.0.005)) then
              albedo(ig,1) = alb_surfice
              albedo(ig,2) = alb_surfice
           endif
         enddo  ! of do ig=1,ngrid
      ENDIF  ! of IF (tracer.AND.water.AND.(ngridmx.NE.1))

c
c   9.2 Compute soil temperatures and subsurface heat flux:
c   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      IF (callsoil) THEN
         CALL soil(ngrid,nsoilmx,.false.,inertiedat,
     &          ptimestep,tsurf,tsoil,capcal,fluxgrd)
      ENDIF

c-----------------------------------------------------------------------
c  10. Write output files
c  ----------------------

c    -------------------------------
c    Dynamical fields incrementation
c    -------------------------------
c (FOR OUTPUT ONLY : the actual model integration is performed in the dynamics)
      ! temperature, zonal and meridional wind
      DO l=1,nlayer
        DO ig=1,ngrid
          zt(ig,l)=pt(ig,l)  + pdt(ig,l)*ptimestep
          zu(ig,l)=pu(ig,l)  + pdu(ig,l)*ptimestep
          zv(ig,l)=pv(ig,l)  + pdv(ig,l)*ptimestep
        ENDDO
      ENDDO

      ! tracers
      DO iq=1, nq
        DO l=1,nlayer
          DO ig=1,ngrid
            zq(ig,l,iq)=pq(ig,l,iq) +pdq(ig,l,iq)*ptimestep
          ENDDO
        ENDDO
      ENDDO

      ! surface pressure
      DO ig=1,ngrid
          ps(ig)=pplev(ig,1) + pdpsrf(ig)*ptimestep
      ENDDO

      ! pressure
      DO l=1,nlayer
        DO ig=1,ngrid
             zplev(ig,l)=pplev(ig,l)/pplev(ig,1)*ps(ig)
             zplay(ig,l)=pplay(ig,l)/pplev(ig,1)*ps(ig)
        ENDDO
      ENDDO

      ! Density 
      DO l=1,nlayer
         DO ig=1,ngrid
            rho(ig,l) = zplay(ig,l)/(rnew(ig,l)*zt(ig,l))
         ENDDO
      ENDDO

c    Compute surface stress : (NB: z0 is a common in surfdat.h)
c     DO ig=1,ngrid
c        cd = (0.4/log(zzlay(ig,1)/z0(ig)))**2
c        zstress(ig) = rho(ig,1)*cd*(zu(ig,1)**2 + zv(ig,1)**2)
c     ENDDO

c     Sum of fluxes in solar spectral bands (for output only)
      DO ig=1,ngrid
             fluxtop_sw_tot(ig)=fluxtop_sw(ig,1) + fluxtop_sw(ig,2)
             fluxsurf_sw_tot(ig)=fluxsurf_sw(ig,1) + fluxsurf_sw(ig,2)
      ENDDO
c ******* TEST ******************************************************
      ztim1 = 999
      DO l=1,nlayer
        DO ig=1,ngrid
           if (pt(ig,l).lt.ztim1) then
               ztim1 = pt(ig,l)
               igmin = ig
               lmin = l 
           end if
        ENDDO
      ENDDO
      if(min(pt(igmin,lmin),zt(igmin,lmin)).lt.70.) then
        write(*,*) 'PHYSIQ: stability WARNING :'
        write(*,*) 'pt, zt Tmin = ', pt(igmin,lmin), zt(igmin,lmin),
     &              'ig l =', igmin, lmin
      end if
c *******************************************************************

c     ---------------------
c     Outputs to the screen 
c     ---------------------

      IF (lwrite) THEN
         PRINT*,'Global diagnostics for the physics'
         PRINT*,'Variables and their increments x and dx/dt * dt'
         WRITE(*,'(a6,a10,2a15)') 'Ts','dTs','ps','dps'
         WRITE(*,'(2f10.5,2f15.5)')
     s   tsurf(igout),zdtsurf(igout)*ptimestep,
     s   pplev(igout,1),pdpsrf(igout)*ptimestep
         WRITE(*,'(a4,a6,5a10)') 'l','u','du','v','dv','T','dT'
         WRITE(*,'(i4,6f10.5)') (l,
     s   pu(igout,l),pdu(igout,l)*ptimestep,
     s   pv(igout,l),pdv(igout,l)*ptimestep,
     s   pt(igout,l),pdt(igout,l)*ptimestep,
     s   l=1,nlayer)
      ENDIF ! of IF (lwrite)

      IF (ngrid.NE.1) THEN

#ifndef MESOSCALE
c        -------------------------------------------------------------------
c        Writing NetCDF file  "RESTARTFI" at the end of the run
c        -------------------------------------------------------------------
c        Note: 'restartfi' is stored just before dynamics are stored
c              in 'restart'. Between now and the writting of 'restart',
c              there will have been the itau=itau+1 instruction and
c              a reset of 'time' (lastacll = .true. when itau+1= itaufin)
c              thus we store for time=time+dtvr

         IF(lastcall) THEN
            ztime_fin = ptime + ptimestep/(float(iphysiq)*daysec) 
            write(*,*)'PHYSIQ: for physdem ztime_fin =',ztime_fin
            call physdem1("restartfi.nc",long,lati,nsoilmx,nq,
     .              ptimestep,pday,
     .              ztime_fin,tsurf,tsoil,co2ice,emis,q2,qsurf,
     .              area,albedodat,inertiedat,zmea,zstd,zsig,
     .              zgam,zthe)
         ENDIF
#endif

c        -------------------------------------------------------------------
c        Calculation of diagnostic variables written in both stats and
c          diagfi files
c        -------------------------------------------------------------------

         if (tracer) then
           if (water) then

             call zerophys(ngrid,mtot)
             call zerophys(ngrid,icetot)
             call zerophys(ngrid,rave)
             call zerophys(ngrid,tauTES)
             do ig=1,ngrid 
               do l=1,nlayermx
                 mtot(ig) = mtot(ig) + 
     &                      zq(ig,l,igcm_h2o_vap) * 
     &                      (pplev(ig,l) - pplev(ig,l+1)) / g
                 icetot(ig) = icetot(ig) + 
     &                        zq(ig,l,igcm_h2o_ice) * 
     &                        (pplev(ig,l) - pplev(ig,l+1)) / g
                 rave(ig) = rave(ig) + 
     &                      zq(ig,l,igcm_h2o_ice) *
     &                      (pplev(ig,l) - pplev(ig,l+1)) / g * 
     &                      rice(ig,l) * (1.+nuice_ref)
c                Computing abs optical depth at 825 cm-1 in each
c                  layer to simulate NEW TES retrieval
                 Qabsice = min(
     &             max(0.4e6*rice(ig,l)*(1.+nuice_ref)-0.05 ,0.),1.2
     &                        )
                 opTES(ig,l)= 0.75 * Qabsice * 
     &             zq(ig,l,igcm_h2o_ice) *
     &             (pplev(ig,l) - pplev(ig,l+1)) / g
     &             / (rho_ice * rice(ig,l) * (1.+nuice_ref))
                 tauTES(ig)=tauTES(ig)+ opTES(ig,l) 
               enddo
               rave(ig)=rave(ig)/max(icetot(ig),1.e-30)
               if (icetot(ig)*1e3.lt.0.01) rave(ig)=0.
             enddo

           endif ! of if (water)
         endif ! of if (tracer)

c        -----------------------------------------------------------------
c        WSTATS: Saving statistics
c        -----------------------------------------------------------------
c        ("stats" stores and accumulates 8 key variables in file "stats.nc"
c        which can later be used to make the statistic files of the run:
c        "stats")          only possible in 3D runs !
         
         IF (callstats) THEN

           call wstats(ngrid,"ps","Surface pressure","Pa",2,ps)
           call wstats(ngrid,"tsurf","Surface temperature","K",2,tsurf)
           call wstats(ngrid,"co2ice","CO2 ice cover",
     &                "kg.m-2",2,co2ice)
           call wstats(ngrid,"fluxsurf_lw",
     &                "Thermal IR radiative flux to surface","W.m-2",2,
     &                fluxsurf_lw)
           call wstats(ngrid,"fluxsurf_sw",
     &                "Solar radiative flux to surface","W.m-2",2,
     &                fluxsurf_sw_tot)
           call wstats(ngrid,"fluxtop_lw",
     &                "Thermal IR radiative flux to space","W.m-2",2,
     &                fluxtop_lw)
           call wstats(ngrid,"fluxtop_sw",
     &                "Solar radiative flux to space","W.m-2",2,
     &                fluxtop_sw_tot)
           call wstats(ngrid,"temp","Atmospheric temperature","K",3,zt)
           call wstats(ngrid,"u","Zonal (East-West) wind","m.s-1",3,zu)
           call wstats(ngrid,"v","Meridional (North-South) wind",
     &                "m.s-1",3,zv)
           call wstats(ngrid,"w","Vertical (down-up) wind",
     &                "m.s-1",3,pw)
           call wstats(ngrid,"rho","Atmospheric density","none",3,rho)
           call wstats(ngrid,"pressure","Pressure","Pa",3,pplay)
c          call wstats(ngrid,"q2",
c    &                "Boundary layer eddy kinetic energy",
c    &                "m2.s-2",3,q2)
c          call wstats(ngrid,"emis","Surface emissivity","w.m-1",2,
c    &                emis)
c          call wstats(ngrid,"ssurf","Surface stress","N.m-2",
c    &                2,zstress)
c          call wstats(ngrid,"sw_htrt","sw heat.rate",
c    &                 "W.m-2",3,zdtsw)
c          call wstats(ngrid,"lw_htrt","lw heat.rate",
c    &                 "W.m-2",3,zdtlw)

           if (tracer) then
             if (water) then
               vmr=zq(1:ngridmx,1:nlayermx,igcm_h2o_vap)
     &                  *mugaz/mmol(igcm_h2o_vap)
               call wstats(ngrid,"vmr_h2ovapor",
     &                    "H2O vapor volume mixing ratio","mol/mol",
     &                    3,vmr)
               vmr=zq(1:ngridmx,1:nlayermx,igcm_h2o_ice)
     &                  *mugaz/mmol(igcm_h2o_ice)
               call wstats(ngrid,"vmr_h2oice",
     &                    "H2O ice volume mixing ratio","mol/mol",
     &                    3,vmr)
               call wstats(ngrid,"h2o_ice_s",
     &                    "surface h2o_ice","kg/m2",
     &                    2,qsurf(1,igcm_h2o_ice))

               call wstats(ngrid,"mtot",
     &                    "total mass of water vapor","kg/m2",
     &                    2,mtot)
               call wstats(ngrid,"icetot",
     &                    "total mass of water ice","kg/m2",
     &                    2,icetot)
               call wstats(ngrid,"reffice",
     &                    "Mean reff","m",
     &                    2,rave)
c              call wstats(ngrid,"rice",
c    &                    "Ice particle size","m",
c    &                    3,rice)
c              If activice is true, tauTES is computed in aeropacity.F;
               if (.not.activice) then
                 call wstats(ngrid,"tauTESap",
     &                      "tau abs 825 cm-1","",
     &                      2,tauTES)
               endif

             endif ! of if (water)

             if (thermochem.or.photochem) then
                do iq=1,nq
                   if ((noms(iq).eq."o").or.(noms(iq).eq."co2").or.
     .                (noms(iq).eq."co").or.(noms(iq).eq."n2").or.
     .                (noms(iq).eq."h2").or.
     .                (noms(iq).eq."o3")) then
                        do l=1,nlayer
                          do ig=1,ngrid
                            vmr(ig,l)=zq(ig,l,iq)*mmean(ig,l)/mmol(iq)
                          end do
                        end do
                        call wstats(ngrid,"vmr_"//trim(noms(iq)),
     .                     "Volume mixing ratio","mol/mol",3,vmr)
                   endif
                enddo
             endif ! of if (thermochem.or.photochem)

           endif ! of if (tracer)

           IF(lastcall) THEN
             write (*,*) "Writing stats..."
             call mkstats(ierr)
           ENDIF

         ENDIF !if callstats

c        (Store EOF for Mars Climate database software)
         IF (calleofdump) THEN
            CALL eofdump(ngrid, nlayer, zu, zv, zt, rho, ps)
         ENDIF


#ifdef MESOSCALE
      !!!
      !!! OUTPUT FIELDS
      !!!
      wtsurf(1:ngrid) = tsurf(1:ngrid)    !! surface temperature
      wco2ice(1:ngrid) = co2ice(1:ngrid)  !! co2 ice
      mtot(1:ngrid) = mtot(1:ngrid) * 1.e6 / rho_ice
      IF (igcm_h2o_ice .ne. 0) THEN      
        qsurfice(1:ngrid) = qsurf(1:ngrid,igcm_h2o_ice)
        vmr=1.e6 * zq(1:ngrid,1:nlayer,igcm_h2o_ice)
     .           * mugaz / mmol(igcm_h2o_ice)
      ENDIF
c AUTOMATICALLY GENERATED FROM REGISTRY
#include "fill_save.inc"
#else

c        ==========================================================
c        WRITEDIAGFI: Outputs in netcdf file "DIAGFI", containing
c          any variable for diagnostic (output with period
c          "ecritphy", set in "run.def")
c        ==========================================================
c        WRITEDIAGFI can ALSO be called from any other subroutines
c        for any variables !!
         call WRITEDIAGFI(ngrid,"emis","Surface emissivity","w.m-1",2,
     &                  emis)
!         call WRITEDIAGFI(ngrid,"pplay","Pressure","Pa",3,zplay)
!         call WRITEDIAGFI(ngrid,"pplev","Pressure","Pa",3,zplev)
         call WRITEDIAGFI(ngrid,"tsurf","Surface temperature","K",2,
     &                  tsurf)
         call WRITEDIAGFI(ngrid,"ps","surface pressure","Pa",2,ps)
        call WRITEDIAGFI(ngrid,"co2ice","co2 ice thickness","kg.m-2",2,
     &                  co2ice)
c         call WRITEDIAGFI(ngrid,"temp7","temperature in layer 7",
c     &                  "K",2,zt(1,7))
c         call WRITEDIAGFI(ngrid,"fluxsurf_lw","fluxsurf_lw","W.m-2",2,
c     &                  fluxsurf_lw)
c         call WRITEDIAGFI(ngrid,"fluxsurf_sw","fluxsurf_sw","W.m-2",2,
c     &                  fluxsurf_sw_tot)
c         call WRITEDIAGFI(ngrid,"fluxtop_lw","fluxtop_lw","W.m-2",2,
c     &                  fluxtop_lw)
c         call WRITEDIAGFI(ngrid,"fluxtop_sw","fluxtop_sw","W.m-2",2,
c     &                  fluxtop_sw_tot)
         call WRITEDIAGFI(ngrid,"temp","temperature","K",3,zt)
        call WRITEDIAGFI(ngrid,"u","Zonal wind","m.s-1",3,zu)
        call WRITEDIAGFI(ngrid,"v","Meridional wind","m.s-1",3,zv)
        call WRITEDIAGFI(ngrid,"w","Vertical wind","m.s-1",3,pw)
c         call WRITEDIAGFI(ngrid,"rho","density","none",3,rho)
c        call WRITEDIAGFI(ngrid,"q2","q2","kg.m-3",3,q2)
!        call WRITEDIAGFI(ngrid,'Teta','T potentielle','K',3,zh)
c        call WRITEDIAGFI(ngrid,"pressure","Pressure","Pa",3,pplay)
c        call WRITEDIAGFI(ngrid,"ssurf","Surface stress","N.m-2",2,
c    &                  zstress)
c        call WRITEDIAGFI(ngridmx,'sw_htrt','sw heat. rate',
c    &                   'w.m-2',3,zdtsw)
c        call WRITEDIAGFI(ngridmx,'lw_htrt','lw heat. rate',
c    &                   'w.m-2',3,zdtlw)
c        CALL WRITEDIAGFI(ngridmx,'tauTESap',
c     &                         'tau abs 825 cm-1',
c     &                         '',2,tauTES)

!!!!!!!!!!!!!!!!!!!!!!!!SOIL SOIL SOIL
        call WRITEDIAGFI(ngrid,"tsoil","Soil temperature",
     &                       "K",3,tsoil)
        call WRITEDIAGFI(ngrid,"inertiedat","Soil inertia",
     &                       "K",3,inertiedat)
!!!!!!!!!!!!!!!!!!!!!!!!SOIL SOIL SOIL

c        ----------------------------------------------------------
c        Outputs of the CO2 cycle
c        ----------------------------------------------------------

         if (tracer.and.(igcm_co2.ne.0)) then
!          call WRITEDIAGFI(ngrid,"co2_l1","co2 mix. ratio in 1st layer",
!    &                     "kg/kg",2,zq(1,1,igcm_co2))
!          call WRITEDIAGFI(ngrid,"co2","co2 mass mixing ratio",
!    &                     "kg/kg",3,zq(1,1,igcm_co2))
        
         ! Compute co2 column
         call zerophys(ngrid,co2col)
         do l=1,nlayermx
           do ig=1,ngrid
             co2col(ig)=co2col(ig)+
     &                  zq(ig,l,igcm_co2)*(pplev(ig,l)-pplev(ig,l+1))/g
           enddo
         enddo
c         call WRITEDIAGFI(ngrid,"co2col","CO2 column","kg.m-2",2,
c     &                  co2col)
         endif ! of if (tracer.and.(igcm_co2.ne.0))

c        ----------------------------------------------------------
c        Outputs of the water cycle
c        ----------------------------------------------------------
         if (tracer) then
           if (water) then

            !!!! waterice = q01, voir readmeteo.F90
            call WRITEDIAGFI(ngridmx,'q01',noms(igcm_h2o_ice),
     &                      'kg/kg',3,
     &                       zq(1:ngridmx,1:nlayermx,igcm_h2o_ice))
            !!!! watervapor = q02, voir readmeteo.F90
            call WRITEDIAGFI(ngridmx,'q02',noms(igcm_h2o_vap),
     &                      'kg/kg',3,
     &                       zq(1:ngridmx,1:nlayermx,igcm_h2o_vap))
            !!!! surface waterice qsurf02 (voir readmeteo)
            call WRITEDIAGFI(ngridmx,'qsurf02','surface tracer',
     &                      'kg.m-2',2,
     &                       qsurf(1:ngridmx,igcm_h2o_ice))

             CALL WRITEDIAGFI(ngridmx,'mtot',
     &                       'total mass of water vapor',
     &                       'kg/m2',2,mtot)
             CALL WRITEDIAGFI(ngridmx,'icetot',
     &                       'total mass of water ice',
     &                       'kg/m2',2,icetot)
c            vmr=zq(1:ngridmx,1:nlayermx,igcm_h2o_ice)
c    &                *mugaz/mmol(igcm_h2o_ice)
c            call WRITEDIAGFI(ngridmx,'vmr_h2oice','h2o ice vmr',
c    &                       'mol/mol',3,vmr)
             CALL WRITEDIAGFI(ngridmx,'reffice',
     &                       'Mean reff',
     &                       'm',2,rave)
c            call WRITEDIAGFI(ngridmx,'rice','Ice particle size',
c    &                       'm',3,rice)
c            If activice is true, tauTES is computed in aeropacity.F;
             if (.not.activice) then
               CALL WRITEDIAGFI(ngridmx,'tauTESap',
     &                         'tau abs 825 cm-1',
     &                         '',2,tauTES)
             endif
             call WRITEDIAGFI(ngridmx,'h2o_ice_s',
     &                       'surface h2o_ice',
     &                       'kg.m-2',2,qsurf(1,igcm_h2o_ice))
           endif !(water)


           if (water.and..not.photochem) then
             iq=nq
c            write(str2(1:2),'(i2.2)') iq
c            call WRITEDIAGFI(ngridmx,'dqs'//str2,'dqscloud',
c    &                       'kg.m-2',2,zdqscloud(1,iq))
c            call WRITEDIAGFI(ngridmx,'dqch'//str2,'var chim',
c    &                       'kg/kg',3,zdqchim(1,1,iq))
c            call WRITEDIAGFI(ngridmx,'dqd'//str2,'var dif',
c    &                       'kg/kg',3,zdqdif(1,1,iq))
c            call WRITEDIAGFI(ngridmx,'dqa'//str2,'var adj',
c    &                       'kg/kg',3,zdqadj(1,1,iq))
c            call WRITEDIAGFI(ngridmx,'dqc'//str2,'var c',
c    &                       'kg/kg',3,zdqc(1,1,iq))
           endif  !(water.and..not.photochem)
         endif

c        ----------------------------------------------------------
c        Outputs of the dust cycle
c        ----------------------------------------------------------

c        call WRITEDIAGFI(ngridmx,'tauref',
c    &                    'Dust ref opt depth','NU',2,tauref)

         if (tracer.and.(dustbin.ne.0)) then
c          call WRITEDIAGFI(ngridmx,'tau','taudust','SI',2,tau(1,1))
           if (doubleq) then
cc            call WRITEDIAGFI(ngridmx,'qsurf','qsurf',
cc    &                       'kg.m-2',2,qsurf(1,1))
cc            call WRITEDIAGFI(ngridmx,'Nsurf','N particles',
cc    &                       'N.m-2',2,qsurf(1,2))
cc            call WRITEDIAGFI(ngridmx,'dqsdev','ddevil lift',
cc    &                       'kg.m-2.s-1',2,zdqsdev(1,1))
cc            call WRITEDIAGFI(ngridmx,'dqssed','sedimentation',
cc    &                       'kg.m-2.s-1',2,zdqssed(1,1))
c             call WRITEDIAGFI(ngridmx,'reffdust','reffdust',
c     &                        'm',3,rdust*ref_r0)
             call WRITEDIAGFI(ngridmx,'dustq','Dust mass mr',
     &                        'kg/kg',3,pq(1,1,igcm_dust_mass))
             call WRITEDIAGFI(ngridmx,'dustN','Dust number',
     &                        'part/kg',3,pq(1,1,igcm_dust_number))
           else
             do iq=1,dustbin
               write(str2(1:2),'(i2.2)') iq
               call WRITEDIAGFI(ngridmx,'q'//str2,'mix. ratio',
     &                         'kg/kg',3,zq(1,1,iq))
               call WRITEDIAGFI(ngridmx,'qsurf'//str2,'qsurf',
     &                         'kg.m-2',2,qsurf(1,iq))
             end do
           endif ! (doubleq)
c          if (submicron) then
c            call WRITEDIAGFI(ngridmx,'dustsubm','subm mass mr',
c    &                        'kg/kg',3,pq(1,1,igcm_dust_submicron))
c          endif ! (submicron)
         end if  ! (tracer.and.(dustbin.ne.0))

c        ----------------------------------------------------------
c        Outputs of thermals
c        ----------------------------------------------------------
         if (calltherm) then

!        call WRITEDIAGFI(ngrid,'dtke',
!     &              'tendance tke thermiques','m**2/s**2',
!     &                         3,dtke_th)
!        call WRITEDIAGFI(ngrid,'d_u_ajs',
!     &              'tendance u thermiques','m/s',
!     &                         3,pdu_th*ptimestep)
!        call WRITEDIAGFI(ngrid,'d_v_ajs',
!     &              'tendance v thermiques','m/s',
!     &                         3,pdv_th*ptimestep)
!        if (tracer) then
!        if (nq .eq. 2) then
!        call WRITEDIAGFI(ngrid,'deltaq_th',
!     &              'delta q thermiques','kg/kg',
!     &                         3,ptimestep*pdq_th(:,:,2))
!        endif
!        endif

        lmax_th_out(:)=real(lmax_th(:))

        call WRITEDIAGFI(ngridmx,'lmax_th',
     &              'hauteur du thermique','K',
     &                         2,lmax_th_out)
        call WRITEDIAGFI(ngridmx,'hfmax_th',
     &              'maximum TH heat flux','K.m/s',
     &                         2,hfmax_th)
        call WRITEDIAGFI(ngridmx,'wmax_th',
     &              'maximum TH vertical velocity','m/s',
     &                         2,wmax_th)

         endif

c        ----------------------------------------------------------
c        Output in netcdf file "diagsoil.nc" for subterranean
c          variables (output every "ecritphy", as for writediagfi)
c        ----------------------------------------------------------

         ! Write soil temperature
!        call writediagsoil(ngrid,"soiltemp","Soil temperature","K",
!    &                     3,tsoil)
         ! Write surface temperature
!        call writediagsoil(ngrid,"tsurf","Surface temperature","K",
!    &                     2,tsurf)

c        ==========================================================
c        END OF WRITEDIAGFI
c        ==========================================================
#endif

      ELSE     ! if(ngrid.eq.1)

         print*,'Ls =',zls*180./pi,
     &  '  tauref(700 Pa) =',tauref
c      ----------------------------------------------------------------------
c      Output in grads file "g1d" (ONLY when using testphys1d)
c      (output at every X physical timestep)
c      ----------------------------------------------------------------------
c
c        CALL writeg1d(ngrid,1,fluxsurf_lw,'Fs_ir','W.m-2')
c         CALL writeg1d(ngrid,1,tsurf,'tsurf','K')
c         CALL writeg1d(ngrid,1,ps,'ps','Pa')
         
c         CALL writeg1d(ngrid,nlayer,zt,'T','K')
c        CALL writeg1d(ngrid,nlayer,pu,'u','m.s-1')
c        CALL writeg1d(ngrid,nlayer,pv,'v','m.s-1')
c        CALL writeg1d(ngrid,nlayer,pw,'w','m.s-1')

! THERMALS STUFF 1D

         if(calltherm) then

        lmax_th_out(:)=real(lmax_th(:))

        call WRITEDIAGFI(ngridmx,'lmax_th',
     &              'hauteur du thermique','point',
     &                         0,lmax_th_out)
        call WRITEDIAGFI(ngridmx,'hfmax_th',
     &              'maximum TH heat flux','K.m/s',
     &                         0,hfmax_th)
        call WRITEDIAGFI(ngridmx,'wmax_th',
     &              'maximum TH vertical velocity','m/s',
     &                         0,wmax_th)


         co2col(:)=0.
         dummycol(:)=0.
         if (tracer) then
         do l=1,nlayermx
           do ig=1,ngrid
             co2col(ig)=co2col(ig)+
     &                  zq(ig,l,1)*(pplev(ig,l)-pplev(ig,l+1))/g
         if (nqmx .gt. 1) then
             iq=2 ! to avoid out-of-bounds spotting by picky compilers
                  ! when gcm is compiled with only one tracer
             dummycol(ig)=dummycol(ig)+
     &                  zq(ig,l,iq)*(pplev(ig,l)-pplev(ig,l+1))/g
         endif
         enddo
         enddo

         end if
         call WRITEDIAGFI(ngrid,'co2col','integrated co2 mass'          &
     &                                      ,'kg/m-2',0,co2col)
         call WRITEDIAGFI(ngrid,'dummycol','integrated dummy mass'      &
     &                                      ,'kg/m-2',0,dummycol)
         endif
         call WRITEDIAGFI(ngrid,'w','vertical velocity'                 &
     &                              ,'m/s',1,pw)
         call WRITEDIAGFI(ngrid,"q2","q2","kg.m-3",1,q2)
         call WRITEDIAGFI(ngrid,"tsurf","Surface temperature","K",0,
     &                  tsurf)

         call WRITEDIAGFI(ngrid,"pplay","Pressure","Pa",1,zplay)
         call WRITEDIAGFI(ngrid,"pplev","Pressure","Pa",1,zplev)
! or output in diagfi.nc (for testphys1d)
         call WRITEDIAGFI(ngridmx,'ps','Surface pressure','Pa',0,ps)
         call WRITEDIAGFI(ngridmx,'temp','Temperature',
     &                       'K',1,zt)

         if(tracer) then
c           CALL writeg1d(ngrid,1,tau,'tau','SI')
            do iq=1,nq
c              CALL writeg1d(ngrid,nlayer,zq(1,1,iq),noms(iq),'kg/kg') 
               call WRITEDIAGFI(ngridmx,trim(noms(iq)),
     &              trim(noms(iq)),'kg/kg',1,zq(1,1,iq))
            end do
         end if

         zlocal(1)=-log(pplay(1,1)/pplev(1,1))* Rnew(1,1)*zt(1,1)/g

         do l=2,nlayer-1
            tmean=zt(1,l)
            if(zt(1,l).ne.zt(1,l-1))
     &        tmean=(zt(1,l)-zt(1,l-1))/log(zt(1,l)/zt(1,l-1))
              zlocal(l)= zlocal(l-1)
     &        -log(pplay(1,l)/pplay(1,l-1))*rnew(1,l)*tmean/g
         enddo
         zlocal(nlayer)= zlocal(nlayer-1)-
     &                   log(pplay(1,nlayer)/pplay(1,nlayer-1))*
     &                   rnew(1,nlayer)*tmean/g

      END IF       ! if(ngrid.ne.1)

      icount=icount+1
      RETURN
      END