source: trunk/LMDZ.COMMON/libf/evolution/pem.F90 @ 3939

!------------------------
! I   Initialization
!    I_a Read the "run.def"
!    I_b Read the "start.nc" and "startfi.nc"
!    I_c Subslope parametrisation
!    I_d Read the PCM data and convert them to the physical grid
!    I_e Initialization of the PEM variable and soil
!    I_f Compute tendencies
!    I_g Compute global surface pressure
!    I_h Read the "startpem.nc"
!    I_i Compute orbit criterion

! II  Run
!    II_a Update pressure, ice and tracers
!    II_b Evolution of ice
!    II_c Flow of glaciers
!    II_d Update surface and soil temperatures
!    II_e Outputs
!    II_f Update the tendencies
!    II_g Checking the stopping criterion

! III Output
!    III_a Update surface values for the PCM start files
!    III_b Write the "restart.nc" and "restartfi.nc"
!    III_c Write the "restartpem.nc"
!------------------------

PROGRAM pem

use phyetat0_mod,               only: phyetat0
use phyredem,                   only: physdem0, physdem1
use netcdf,                     only: nf90_open, NF90_NOWRITE, nf90_get_var, nf90_inq_varid, nf90_close
use turb_mod,                   only: q2, wstar
use comslope_mod,               only: nslope, def_slope, def_slope_mean, subslope_dist, iflat, ini_comslope_h
use logic_mod,                  only: iflag_phys
use mod_const_mpi,              only: COMM_LMDZ
use infotrac
use geometry_mod,               only: latitude_deg
use conf_pem_mod,               only: conf_pem
use pemredem,                   only: pemdem0, pemdem1
use glaciers_mod,               only: flow_co2glaciers, flow_h2oglaciers, co2ice_flow, h2oice_flow, inf_h2oice_threshold, &
                                      metam_h2oice_threshold, metam_co2ice_threshold, metam_h2oice, metam_co2ice, computeTcondCO2
use stopping_crit_mod,          only: stopping_crit_h2o_ice, stopping_crit_co2, stopping_crit_h2o
use constants_marspem_mod,      only: alpha_clap_co2, beta_clap_co2, alpha_clap_h2o, beta_clap_h2o, m_co2, m_noco2
use evol_ice_mod,               only: evol_co2_ice, evol_h2o_ice, balance_h2oice_reservoirs
use comsoil_h_PEM,              only: soil_pem, ini_comsoil_h_PEM, end_comsoil_h_PEM, nsoilmx_PEM, &
                                      TI_PEM,               & ! Soil thermal inertia
                                      tsoil_PEM, layer_PEM, & ! Soil temp, number of subsurface layers, soil mid layer depths
                                      fluxgeo                 ! Geothermal flux for the PEM and PCM
use adsorption_mod,             only: regolith_adsorption, adsorption_pem,        & ! Bool to check if adsorption, main subroutine
                                      ini_adsorption_h_PEM, end_adsorption_h_PEM, & ! Allocate arrays
                                      co2_adsorbed_phys, h2o_adsorbed_phys          ! Mass of co2 and h2O adsorbed
use time_evol_mod,              only: dt, evol_orbit_pem, Max_iter_pem, convert_years, year_bp_ini
use orbit_param_criterion_mod,  only: orbit_param_criterion
use recomp_orb_param_mod,       only: recomp_orb_param
use ice_table_mod,              only: icetable_depth, icetable_thickness, end_ice_table, ice_porefilling, &
                                      ini_ice_table, icetable_equilibrium, icetable_dynamic, computeice_table_equilibrium, compute_massh2o_exchange_ssi
use soil_thermalproperties_mod, only: update_soil_thermalproperties
use time_phylmdz_mod,           only: daysec, dtphys
use abort_pem_mod,              only: abort_pem
use soil_settings_PEM_mod,      only: soil_settings_PEM
use compute_tend_mod,           only: compute_tend
use info_PEM_mod,               only: info_PEM
use get_timelen_PCM_mod,        only: get_timelen_PCM
use pemetat0_mod,               only: pemetat0
use read_data_PCM_mod,          only: read_data_PCM
use recomp_tend_mod,            only: recomp_tend_co2, recomp_tend_h2o
use compute_soiltemp_mod,       only: compute_tsoil_pem, shift_tsoil2surf
use writediagpem_mod,           only: writediagpem, writediagsoilpem
use co2condens_mod,             only: CO2cond_ps
use layering_mod,               only: layering, del_layering, make_layering, layering_algo, subsurface_ice_layering, &
                                      rho_co2ice, rho_h2oice, ptrarray,                                              &
                                      stratum, get_nb_str_max, nb_str_max, is_dust_lag, is_co2ice_str, is_h2oice_str
use dyn_ss_ice_m_mod,           only: dyn_ss_ice_m
use parse_args_mod,             only: parse_args
use job_timelimit_mod,          only: timelimit, antetime, timewall
use paleoclimate_mod,           only: h2o_ice_depth, zdqsdif_ssi_tot
use surf_temp,                  only: update_tsurf_nearest_baresoil

#ifndef CPP_STD
    use comsoil_h,          only: tsoil, nsoilmx, ini_comsoil_h, inertiedat, mlayer, inertiesoil, flux_geo, nqsoil, qsoil
    use surfdat_h,          only: tsurf, qsurf, emis, emissiv, emisice, ini_surfdat_h,   &
                                  albedodat, albedice, albedo_h2o_frost, albedo_h2o_cap, &
                                  zmea, zstd, zsig, zgam, zthe, frost_albedo_threshold,  &
                                  watercap, watercaptag, perennial_co2ice, albedo_perennialco2
    use dimradmars_mod,     only: totcloudfrac, albedo
    use dust_param_mod,     only: tauscaling
    use tracer_mod,         only: noms, igcm_h2o_ice, igcm_co2, mmol, igcm_h2o_vap ! Tracer names and molar masses
    use mod_phys_lmdz_para, only: is_parallel, is_sequential, is_mpi_root, is_omp_root, is_master
    use planete_h,          only: aphelie, periheli, year_day, peri_day, obliquit, iniorbit
    use surfini_mod,        only: surfini
    use comcstfi_h,         only: mugaz
#else
    use tracer_h,           only: noms, igcm_h2o_ice, igcm_co2 ! Tracer names
    use phys_state_var_mod, only: cloudfrac, totcloudfrac, albedo_snow_SPECTV,HICE,RNAT,   &
                                  PCTSRF_SIC, TSLAB, TSEA_ICE, SEA_ICE, ALBEDO_BAREGROUND, &
                                  ALBEDO_CO2_ICE_SPECTV, phys_state_var_init
    use aerosol_mod,        only: iniaerosol
    use planete_mod,        only: apoastr, periastr, year_day, peri_day, obliquit
    use comcstfi_mod,       only: pi, rad, g, r, cpp, rcp, mugaz
#endif

#ifndef CPP_1D
    use comconst_mod,             only: pi, rad, g, r, cpp, rcp => kappa
    use iniphysiq_mod,            only: iniphysiq
    use control_mod,              only: iphysiq, day_step, nsplit_phys
#else
    use comcstfi_h,               only: pi, rad, g, r, cpp, rcp
    use time_phylmdz_mod,         only: iphysiq, steps_per_sol
    use regular_lonlat_mod,       only: init_regular_lonlat
    use physics_distribution_mod, only: init_physics_distribution
    use mod_grid_phy_lmdz,        only: regular_lonlat
    use init_testphys1d_mod,      only: init_testphys1d
    use comvert_mod,              only: ap, bp
    use writerestart1D_mod,       only: writerestart1D
#endif

implicit none

include "dimensions.h"
include "paramet.h"
include "comgeom.h"
include "iniprint.h"

! Same variable names as in the PCM
integer, parameter :: ngridmx = 2 + (jjm - 1)*iim - 1/jjm
integer, parameter :: nlayer = llm ! Number of vertical layer
integer            :: ngrid        ! Number of physical grid points
integer            :: nq           ! Number of tracer
integer            :: day_ini      ! First day of the simulation
real               :: pday         ! Physical day
real               :: time_phys    ! Same as in PCM
real               :: ptimestep    ! Same as in PCM
real               :: ztime_fin    ! Same as in PCM

! Variables to read "start.nc"
character(*), parameter :: start_name = "start.nc" ! Name of the file used to initialize the PEM

! Dynamic variables
real, dimension(ip1jm,llm)          :: vcov          ! vents covariants
real, dimension(ip1jmp1,llm)        :: ucov          ! vents covariants
real, dimension(ip1jmp1,llm)        :: teta          ! Potential temperature
real, dimension(:,:,:), allocatable :: q             ! champs advectes
real, dimension(:),     allocatable :: pdyn          ! pressure for the dynamic grid
real, dimension(:),     allocatable :: ps_start      ! surface pressure in the start file
real, dimension(:),     allocatable :: ps_start0     ! surface pressure in the start file at the beginning
real, dimension(:),     allocatable :: ps_avg        ! (ngrid) Average surface pressure
real, dimension(:),     allocatable :: ps_dev        ! (ngrid x timelen) Surface pressure deviation
real, dimension(:,:),   allocatable :: ps_timeseries ! (ngrid x timelen) Instantaneous surface pressure
real, dimension(ip1jmp1,llm)        :: masse         ! Air mass
real, dimension(ip1jmp1)            :: phis          ! geopotentiel au sol
real                                :: time_0

! Variables to read starfi.nc
character(*), parameter :: startfi_name = "startfi.nc" ! Name of the file used to initialize the PEM
character(2)            :: str2
integer                 :: ncid, status                           ! Variable for handling opening of files
integer                 :: lonvarid, latvarid, areavarid, sdvarid ! Variable ID for Netcdf files
integer                 :: apvarid, bpvarid                       ! Variable ID for Netcdf files

! Variables to read starfi.nc and write restartfi.nc
real, dimension(:), allocatable :: longitude     ! Longitude read in startfi_name and written in restartfi
real, dimension(:), allocatable :: latitude      ! Latitude read in startfi_name and written in restartfi
real, dimension(:), allocatable :: cell_area     ! Cell_area read in startfi_name and written in restartfi
real                            :: total_surface ! Total surface of the planet

! Variables for h2o ice evolution
real, dimension(:,:),    allocatable  :: h2o_ice              ! h2o ice in the PEM
real, dimension(:,:),    allocatable  :: d_h2oice             ! physical point x slope field: Tendency of evolution of perennial h2o ice
real, dimension(:,:,:),  allocatable  :: min_h2o_ice          ! Minima of h2o ice at each point for the PCM years [kg/m^2]
real                                  :: h2oice_ini_surf      ! Initial surface of sublimating h2o ice
logical, dimension(:,:), allocatable  :: is_h2oice_sublim_ini ! Logical array to know if h2o ice is sublimating
real                                  :: ps_avg_global_ini    ! constant: Global average pressure at initialization [Pa]
real                                  :: ps_avg_global_old    ! constant: Global average pressure of previous time step
real                                  :: ps_avg_global_new    ! constant: Global average pressure of current time step
real,   dimension(:,:),   allocatable :: zplev_new            ! Grid points x Atmospheric field: mass of the atmospheric layers in the pem at current time step [kg/m^2]
real,   dimension(:,:),   allocatable :: zplev_start0         ! Grid points x Atmospheric field: mass of the atmospheric layers in the start [kg/m^2]
real,   dimension(:,:,:), allocatable :: zplev_timeseries_new ! Grid points x Atmospheric x Time: same as zplev_new, but in times series [kg/m ^2]
real,   dimension(:,:,:), allocatable :: zplev_timeseries_old ! same but with the time series, for previous time step
integer                               :: stopPEM              ! which criterion is reached? 0 = no stopping; 1 = h2o ice surf; 2 = no h2o ice; 3 = co2 ice surf; 4 = ps; 5 = orb param; 6 = end of simu
real                                  :: A, B, mmean          ! Molar mass: intermediate A, B for computations of the  mean molar mass of the layer [mol/kg]
real,   dimension(:,:),   allocatable :: q_h2o_PEM_phys       ! Grid points x Times: h2o mass mixing ratio computed in the PEM, first value comes from PCM [kg/kg]
integer                               :: timelen              ! # time samples
real                                  :: extra_mass           ! Intermediate variables Extra mass of a tracer if it is greater than 1
real, dimension(:,:),    allocatable  :: d_h2oice_new         ! Adjusted tendencies to keep balance between donor and recipient
real                                  :: S_atm_2_h2o, S_h2o_2_atm, S_atm_2_h2oice, S_h2oice_2_atm ! Variables to balance H2O

! Variables for co2 ice evolution
real,    dimension(:,:), allocatable :: co2_ice                ! co2 ice in the PEM
real,    dimension(:,:), allocatable :: d_co2ice               ! physical point x slope field: Tendency of evolution of perennial co2 ice over a year
real,    dimension(:,:), allocatable :: d_co2ice_ini           ! physical point x slope field: Tendency of evolution of perennial co2 ice over a year in the PCM
logical, dimension(:,:), allocatable :: is_co2ice_ini          ! Was there co2 ice initially in the PEM?
real,  dimension(:,:,:), allocatable :: min_co2_ice            ! Minimum of co2 ice at each point for the first year [kg/m^2]
real                                 :: co2ice_sublim_surf_ini ! Initial surface of sublimating co2 ice
logical, dimension(:,:), allocatable :: is_co2ice_sublim_ini   ! Logical array to know if co2 ice is sublimating
real,    dimension(:,:), allocatable :: vmr_co2_PCM            ! Grid points x Times co2 volume mixing ratio retrieve from the PCM [m^3/m^3]
real,    dimension(:,:), allocatable :: vmr_co2_PEM_phys       ! Grid points x Times co2 volume mixing ratio used in the PEM
real,    dimension(:,:), allocatable :: q_co2_PEM_phys         ! Grid points x Times co2 mass mixing ratio in the first layer computed in the PEM, first value comes from PCM [kg/kg]
real(kind = 16)                      :: totmass_co2ice, totmass_atmco2         ! Current total CO2 masses
real(kind = 16)                      :: totmass_co2ice_ini, totmass_atmco2_ini ! Initial total CO2 masses

! Variables for the evolution of layered layerings_map
type(layering), dimension(:,:), allocatable :: layerings_map     ! Layering for each grid point and slope
type(ptrarray), dimension(:,:), allocatable :: current           ! Current active stratum in the layering
logical,        dimension(:,:), allocatable :: new_str, new_lag  ! Flags for the layering algorithm
real,           dimension(:,:), allocatable :: h2o_ice_depth_old ! Old depth of subsurface ice layer

! Variables for slopes
integer(kind = 1), dimension(:,:), allocatable :: flag_co2flow ! (ngrid,nslope): Flag where there is a CO2 glacier flow
integer(kind = 1), dimension(:,:), allocatable :: flag_h2oflow ! (ngrid,nslope): Flag where there is a H2O glacier flow

! Variables for surface and soil
real, dimension(:,:),     allocatable :: tsurf_avg                          ! Grid points x Slope field: Average surface temperature [K]
real, dimension(:,:),     allocatable :: tsurf_dev                          ! Grid points x Slope field: Surface temperature deviation [K]
real, dimension(:,:),     allocatable :: tsurf_avg_yr1                      ! Grid points x Slope field: Average surface temperature of first call of the PCM [K]
real, dimension(:,:,:),   allocatable :: tsoil_avg                          ! Grid points x Soil x Slope field: Average Soil Temperature [K]
real, dimension(:,:),     allocatable :: tsoil_avg_old                      ! Grid points x Soil field: Average Soil Temperature at the previous time step [K]
real, dimension(:,:,:),   allocatable :: tsoil_dev                          ! Grid points x Soil x Slope field: Soil temperature deviation [K]
real, dimension(:,:,:,:), allocatable :: tsoil_timeseries                   ! Grid points x Soil x Slope x Times field: Soil temperature timeseries [K]
real, dimension(:,:,:,:), allocatable :: tsoil_PEM_timeseries               ! Grid points x Soil x Slope x Times field: Soil temperature timeseries for PEM [K]
real, dimension(:,:,:,:), allocatable :: tsoil_PEM_timeseries_old           ! Grid points x Soil x Slope x Times field: Soil temperature timeseries for PEM at the previous time step [K]
real, dimension(:,:,:,:), allocatable :: watersoil_density_timeseries       ! Grid points x Soil x Slope x Times Water soil density timeseries [kg /m^3]
real, dimension(:,:),     allocatable :: watersurf_density_avg              ! Grid points x Slope: Average water surface density [kg/m^3]
real, dimension(:,:,:,:), allocatable :: watersoil_density_PEM_timeseries   ! Grid points x Soil x Slope x Times: Water soil density timeseries for PEM [kg/m^3]
real, dimension(:,:,:),   allocatable :: watersoil_density_PEM_avg          ! Grid points x Soil x Slopes: Average water soil density [kg/m^3]
real, dimension(:),       allocatable :: delta_co2_adsorbed                 ! Physics: quantity of CO2 that is exchanged because of adsorption / desorption [kg/m^2]
real, dimension(:),       allocatable :: delta_h2o_adsorbed                 ! Physics: quantity of H2O that is exchanged because of adsorption / desorption [kg/m^2]
real(kind = 16)                       :: totmass_adsco2, totmass_adsco2_ini ! Total mass of CO2 that is exchanged because of adsorption / desoprtion over the planets [kg]
real                                  :: totmass_adsh2o                     ! Total mass of H2O that is exchanged because of adsorption / desoprtion over the planets [kg]
logical, dimension(:,:),  allocatable :: co2ice_disappeared                 ! logical to check if a co2 ice reservoir already disappeared at a previous timestep
real, dimension(:,:),     allocatable :: icetable_thickness_old             ! ngrid x nslope: Thickness of the ice table at the previous iteration [m]
real, dimension(:,:,:),   allocatable :: ice_porefilling_old                ! ngrid x nslope: Ice pore filling at the previous iteration [m]
real, dimension(:),       allocatable :: delta_h2o_icetablesublim           ! ngrid x Total mass of the H2O that has sublimated / condenses from the ice table [kg]
real, dimension(:),       allocatable :: porefill                           ! Pore filling (output) to compute the dynamic ice table
real                                  :: ssi_depth                          ! Ice table depth (output) to compute the dynamic ice table
real, dimension(:,:),     allocatable :: zshift_surf                        ! Elevation shift for the surface [m]
real, dimension(:,:),     allocatable :: zlag                               ! Newly built lag thickness [m]
real, dimension(:,:),     allocatable :: icetable_depth_old                 ! Old depth of the ice table

! Some variables for the PEM run
real, parameter       :: year_step = 1   ! Timestep for the pem
real                  :: i_myear_leg     ! Number of iteration
real                  :: n_myear_leg     ! Maximum number of iterations before stopping
real                  :: i_myear         ! Global number of Martian years of the chained simulations
real                  :: n_myear         ! Maximum number of Martian years of the chained simulations
real                  :: timestep        ! Timestep [s]
integer(kind = 8)     :: cr              ! Number of clock ticks per second (count rate)
integer(kind = 8)     :: c1, c2          ! Counts of processor clock
character(8)          :: date
character(10)         :: time
character(5)          :: zone
integer, dimension(8) :: values
character(128)        :: dir = ' '
character(32)         :: logname = ' '
character(32)         :: hostname = ' '

#ifdef CPP_STD
    real                                :: frost_albedo_threshold = 0.05 ! Frost albedo threeshold to convert fresh frost to old ice
    real                                :: albedo_h2o_frost              ! Albedo of h2o frost
    real, dimension(:),     allocatable :: tsurf_read_generic            ! Temporary variable to do the subslope transfert dimension when reading form generic
    real, dimension(:,:),   allocatable :: qsurf_read_generic            ! Temporary variable to do the subslope transfert dimension when reading form generic
    real, dimension(:,:),   allocatable :: tsoil_read_generic            ! Temporary variable to do the subslope transfert dimension when reading form generic
    real, dimension(:),     allocatable :: emis_read_generic             ! Temporary variable to do the subslope transfert dimension when reading form generic
    real, dimension(:,:),   allocatable :: albedo_read_generic           ! Temporary variable to do the subslope transfert dimension when reading form generic
    real, dimension(:,:),   allocatable :: tsurf                         ! Subslope variable, only needed in the GENERIC case
    real, dimension(:,:,:), allocatable :: qsurf                         ! Subslope variable, only needed in the GENERIC case
    real, dimension(:,:,:), allocatable :: tsoil                         ! Subslope variable, only needed in the GENERIC case
    real, dimension(:,:),   allocatable :: emis                          ! Subslope variable, only needed in the GENERIC case
    real, dimension(:,:),   allocatable :: watercap                      ! Subslope variable, only needed in the GENERIC case =0 no watercap in generic model
    logical, dimension(:),  allocatable :: watercaptag                   ! Subslope variable, only needed in the GENERIC case =false no watercaptag in generic model
    real, dimension(:,:,:), allocatable :: albedo                        ! Subslope variable, only needed in the GENERIC case
    real, dimension(:,:,:), allocatable :: inertiesoil                   ! Subslope variable, only needed in the GENERIC case
#endif

#ifdef CPP_1D
    integer            :: nsplit_phys
    integer, parameter :: jjm_value = jjm - 1
    integer            :: day_step

    ! Dummy variables to use the subroutine 'init_testphys1d'
    logical                             :: therestart1D, therestartfi, ctrl_h2ovap, ctrl_h2oice
    integer                             :: ndt, day0
    real                                :: ptif, pks, day, gru, grv, relaxtime_h2ovap, relaxtime_h2oice
    real, dimension(:),     allocatable :: zqsat
    real, dimension(:,:,:), allocatable :: dq, dqdyn
    real, dimension(nlayer)             :: play, w, qref_h2ovap, qref_h2oice
    real, dimension(nlayer + 1)         :: plev
#else
    integer, parameter                :: jjm_value = jjm
    real, dimension(:),   allocatable :: ap ! Coefficient ap read in start_name and written in restart
    real, dimension(:),   allocatable :: bp ! Coefficient bp read in start_name and written in restart
    real, dimension(:,:), allocatable :: p  ! Grid points x Atmosphere: pressure to recompute and write in restart (ip1jmp1,llmp1)
#endif

! Loop variables
integer :: i, l, ig, nnq, t, islope, ig_loop, islope_loop, isoil, icap
real    :: totmass_ini
logical :: num_str

! CODE
! Elapsed time with system clock
call system_clock(count_rate = cr)
call system_clock(c1)

! Parse command-line options
call parse_args()

! Header
write(*,*) '  *    .          .   +     .    *        .  +      .    .       .      '
write(*,*) '           +         _______  ________  ____    ____      *           + '
write(*,*) ' +   .        *     |_   __ \|_   __  ||_   \  /   _|          .       *'
write(*,*) '          .     .     | |__) | | |_ \_|  |   \/   |  *        *      .  '
write(*,*) '       .              |  ___/  |  _| _   | |\  /| |      .        .     '
write(*,*) '.  *          *      _| |_    _| |__/ | _| |_\/_| |_                  * '
write(*,*) '            +       |_____|  |________||_____||_____|   +     .         '
write(*,*) '  .      *          .   *       .   +       *          .        +      .'

! Some user info
call date_and_time(date,time,zone,values)
call getcwd(dir)      ! Current directory
call getlog(logname)  ! User name
call hostnm(hostname) ! Machine/station name
write(*,*)
write(*,*) '********* PEM information *********'
write(*,*) '+ User     : '//trim(logname)
write(*,*) '+ Machine  : '//trim(hostname)
write(*,*) '+ Directory: '//trim(dir)
write(*,'(a,i2,a,i2,a,i4)') ' + Date     : ',values(3),'/',values(2),'/',values(1)
write(*,'(a,i2,a,i2,a,i2,a)') ' + Time     : ',values(5),':',values(6),':',values(7)

! Parallel variables
#ifndef CPP_STD
    is_sequential = .true.
    is_parallel = .false.
    is_mpi_root = .true.
    is_omp_root = .true.
    is_master = .true.
#endif

! Some constants
day_ini = 0
time_phys = 0.
ngrid = ngridmx
A = (1./m_co2 - 1./m_noco2)
B = 1./m_noco2
year_day = 669
daysec = 88775.
timestep = year_day*daysec*year_step

!----------------------------- INITIALIZATION --------------------------
!------------------------
! I   Initialization
!    I_a Read the "run.def"
!------------------------
write(*,*)
write(*,*) '********* PEM initialization *********'
write(*,*) '> Reading "run.def" (PEM)'
#ifndef CPP_1D
    dtphys = daysec/48. ! Dummy value (overwritten in phyetat0)
    call conf_gcm(99,.true.)
    call infotrac_init
    nq = nqtot
    allocate(q(ip1jmp1,llm,nqtot))
    allocate(longitude(ngrid),latitude(ngrid),cell_area(ngrid))
#else
    allocate(q(1,llm,nqtot),pdyn(1))
    allocate(longitude(1),latitude(1),cell_area(1))

    therestart1D = .false. ! Default value
    inquire(file = 'start1D.txt',exist = therestart1D)
    if (.not. therestart1D) then
        write(*,*) 'There is no "start1D.txt" file!'
        error stop 'Initialization cannot be done for the 1D PEM.'
    endif
    therestartfi = .false. ! Default value
    inquire(file = 'startfi.nc',exist = therestartfi)
    if (.not. therestartfi) then
        write(*,*) 'There is no "startfi.nc" file!'
        error stop 'Initialization cannot be done for the 1D PEM.'
    endif

    write(*,*) '> Reading "start1D.txt" and "startfi.nc"'
    call init_testphys1d('start1D.txt','startfi.nc',therestart1D,therestartfi,ngrid,nlayer,610.,nq,q,         &
                         time_0,pdyn(1),ucov,vcov,teta,ndt,ptif,pks,dtphys,zqsat,dq,dqdyn,day0,day,gru,grv,w, &
                         play,plev,latitude,longitude,cell_area,                                              &
                         ctrl_h2ovap,relaxtime_h2ovap,qref_h2ovap,ctrl_h2oice,relaxtime_h2oice,qref_h2oice)
    nsplit_phys = 1
    day_step = steps_per_sol
#endif

call conf_pem(i_myear,n_myear)

!------------------------
! I   Initialization
!    I_b Read of the "start.nc" and "starfi.nc"
!------------------------
! I_b.1 Read "start.nc"
write(*,*) '> Reading "start.nc"'
allocate(ps_start0(ngrid))
#ifndef CPP_1D
    allocate(pdyn(ip1jmp1))
    call dynetat0(start_name,vcov,ucov,teta,q,masse,pdyn,phis,time_0)

    call gr_dyn_fi(1,iip1,jjp1,ngridmx,pdyn,ps_start0)

    call iniconst ! Initialization of dynamical constants (comconst_mod)
    call inigeom ! Initialization of geometry

    allocate(ap(nlayer + 1))
    allocate(bp(nlayer + 1))
    status = nf90_open(start_name,NF90_NOWRITE,ncid)
    status = nf90_inq_varid(ncid,"ap",apvarid)
    status = nf90_get_var(ncid,apvarid,ap)
    status = nf90_inq_varid(ncid,"bp",bpvarid)
    status = nf90_get_var(ncid,bpvarid,bp)
    status = nf90_close(ncid)

    ! Initialization of physics constants and variables (comcstfi_h)
    call iniphysiq(iim,jjm,llm,(jjm - 1)*iim + 2,comm_lmdz,daysec,day_ini,dtphys/nsplit_phys,rlatu,rlatv,rlonu,rlonv,aire,cu,cv,rad,g,r,cpp,iflag_phys)
#else
    ps_start0(1) = pdyn(1)
#endif
deallocate(pdyn)

! In the PCM, these values are given to the physic by the dynamic.
! Here we simply read them in the "startfi.nc" file
status = nf90_open(startfi_name,NF90_NOWRITE,ncid)
status = nf90_inq_varid(ncid,"longitude",lonvarid)
status = nf90_get_var(ncid,lonvarid,longitude)
status = nf90_inq_varid(ncid,"latitude",latvarid)
status = nf90_get_var(ncid,latvarid,latitude)
status = nf90_inq_varid(ncid,"area",areavarid)
status = nf90_get_var(ncid,areavarid,cell_area)
status = nf90_inq_varid(ncid,"soildepth",sdvarid)
status = nf90_get_var(ncid,sdvarid,mlayer)
status = nf90_close(ncid)

! I_b.2 Read the "startfi.nc"
! First we read the initial state (starfi.nc)
#ifndef CPP_STD
    write(*,*) '> Reading "startfi.nc"'
    call phyetat0(startfi_name,0,0,nsoilmx,ngrid,nlayer,nq,nqsoil,day_ini,time_phys,tsurf, &
                  tsoil,albedo,emis,q2,qsurf,qsoil,tauscaling,totcloudfrac,wstar,          &
                  watercap,perennial_co2ice,def_slope,def_slope_mean,subslope_dist)

    ! Remove unphysical values of surface tracer
    where (qsurf < 0.) qsurf = 0.

    call surfini(ngrid,nslope,qsurf)
#else
    call phys_state_var_init(nq)
    if (.not. allocated(noms)) allocate(noms(nq)) ! (because noms is an argument of physdem1 whether or not tracer is on)
    call initracer(ngrid,nq)
    call iniaerosol()
    allocate(tsurf_read_generic(ngrid))
    allocate(qsurf_read_generic(ngrid,nq))
    allocate(tsoil_read_generic(ngrid,nsoilmx))
    allocate(qsoil_read_generic(ngrid,nsoilmx,nqsoil,nslope))
    allocate(emis_read_generic(ngrid))
    allocate(albedo_read_generic(ngrid,2))
    allocate(qsurf(ngrid,nq,1))
    allocate(tsurf(ngrid,1))
    allocate(tsoil(ngrid,nsoilmx,1))
    allocate(emis(ngrid,1))
    allocate(watercap(ngrid,1))
    allocate(watercaptag(ngrid))
    allocate(albedo(ngrid,2,1))
    allocate(inertiesoil(ngrid,nsoilmx,1))
    call phyetat0(.true.,ngrid,nlayer,startfi_name,0,0,nsoilmx,nq,nqsoil,day_ini,time_phys, &
                  tsurf_read_generic,tsoil_read_generic,emis_read_generic,q2,               &
                  qsurf_read_generic,qsoil_read_generic,cloudfrac,totcloudfrac,hice,        &
                  rnat,pctsrf_sic,tslab,tsea_ice,sea_ice)
    call surfini(ngrid,nq,qsurf_read_generic,albedo_read_generic,albedo_bareground,albedo_snow_SPECTV,albedo_co2_ice_SPECTV)

    nslope = 1
    call ini_comslope_h(ngrid,1)

    qsurf(:,:,1) = qsurf_read_generic
    tsurf(:,1) = tsurf_read_generic
    tsoil(:,:,1) = tsoil_read_generic
    emis(:,1) = emis_read_generic
    watercap(:,1) = 0.
    watercaptag(:) = .false.
    albedo(:,1,1) = albedo_read_generic(:,1)
    albedo(:,2,1) = albedo_read_generic(:,2)
    inertiesoil(:,:,1) = inertiedat

    if (nslope == 1) then
        def_slope(1) = 0
        def_slope(2) = 0
        def_slope_mean = 0
        subslope_dist(:,1) = 1.
    endif

    ! Remove unphysical values of surface tracer
    qsurf(:,:,1) = qsurf_read_generic
    where (qsurf < 0.) qsurf = 0.

    deallocate(tsurf_read_generic,qsurf_read_generic,qsoil_read_generic,emis_read_generic)
#endif

do nnq = 1,nqtot  ! Why not using ini_tracer?
    if (noms(nnq) == "h2o_ice") igcm_h2o_ice = nnq
    if (noms(nnq) == "h2o_vap") then
        igcm_h2o_vap = nnq
        mmol(igcm_h2o_vap) = 18.
    endif
    if (noms(nnq) == "co2") igcm_co2 = nnq
enddo

!------------------------
! I   Initialization
!    I_c Subslope parametrisation
!------------------------
! Define some slope statistics
iflat = 1
do islope = 2,nslope
    if (abs(def_slope_mean(islope)) < abs(def_slope_mean(iflat))) iflat = islope
enddo
write(*,*) 'Flat slope for islope = ',iflat
write(*,*) 'Corresponding criterium = ',def_slope_mean(iflat)

!------------------------
! I   Initialization
!    I_d Read the PCM data and convert them to the physical grid
!------------------------
! First we read the evolution of water and co2 ice (and the mass mixing ratio) over the first year of the PCM run, saving only the minimum value
call get_timelen_PCM("data_PCM_Y1.nc",timelen)

allocate(vmr_co2_PCM(ngrid,timelen),q_co2_PEM_phys(ngrid,timelen),q_h2o_PEM_phys(ngrid,timelen))
allocate(ps_timeseries(ngrid,timelen),ps_avg(ngrid))
allocate(min_co2_ice(ngrid,nslope,2),min_h2o_ice(ngrid,nslope,2))
allocate(tsurf_avg_yr1(ngrid,nslope),tsurf_avg(ngrid,nslope))
allocate(tsoil_avg(ngrid,nsoilmx,nslope),tsoil_timeseries(ngrid,nsoilmx,nslope,timelen))
allocate(watersurf_density_avg(ngrid,nslope),watersoil_density_timeseries(ngrid,nsoilmx,nslope,timelen))

call read_data_PCM("data_PCM_Y1.nc","data_PCM_Y2.nc",timelen,iim,jjm_value,ngrid,nslope,vmr_co2_PCM,ps_timeseries,ps_avg,tsurf_avg_yr1,tsurf_avg, &
                   tsoil_avg,tsoil_timeseries,min_co2_ice,min_h2o_ice,q_co2_PEM_phys,q_h2o_PEM_phys,watersurf_density_avg,watersoil_density_timeseries)

! Compute the deviation from the average
allocate(ps_dev(ngrid),tsurf_dev(ngrid,nslope),tsoil_dev(ngrid,nsoilmx,nslope))
ps_dev = ps_start0 - ps_avg
tsurf_dev = tsurf - tsurf_avg
tsoil_dev = tsoil - tsoil_avg(:,1:nsoilmx,:)

!------------------------
! I   Initialization
!    I_e Initialization of the PEM variables and soil
!------------------------
call end_comsoil_h_PEM
call ini_comsoil_h_PEM(ngrid,nslope)
call end_adsorption_h_PEM
call ini_adsorption_h_PEM(ngrid,nslope,nsoilmx_PEM)
call end_ice_table
call ini_ice_table(ngrid,nslope,nsoilmx_PEM)

allocate(tsoil_PEM_timeseries(ngrid,nsoilmx_PEM,nslope,timelen),watersoil_density_PEM_avg(ngrid,nsoilmx_PEM,nslope),watersoil_density_PEM_timeseries(ngrid,nsoilmx_PEM,nslope,timelen))
if (soil_pem) then
    call soil_settings_PEM(ngrid,nslope,nsoilmx_PEM,nsoilmx,inertiesoil,TI_PEM)
    tsoil_PEM(:,1:nsoilmx,:) = tsoil_avg
    watersoil_density_PEM_timeseries(:,1:nsoilmx,:,:) = watersoil_density_timeseries
    tsoil_PEM_timeseries(:,1:nsoilmx,:,:) = tsoil_timeseries
    do l = nsoilmx + 1,nsoilmx_PEM
        tsoil_PEM(:,l,:) = tsoil_avg(:,nsoilmx,:)
        watersoil_density_PEM_timeseries(:,l,:,:) = watersoil_density_timeseries(:,nsoilmx,:,:)
        tsoil_PEM_timeseries(:,l,:,:) = tsoil_timeseries(:,nsoilmx,:,:)
    enddo
    watersoil_density_PEM_avg = sum(watersoil_density_PEM_timeseries,4)/timelen
endif !soil_pem
deallocate(tsoil_avg,watersoil_density_timeseries,tsoil_timeseries)

!------------------------
! I   Initialization
!    I_f Compute tendencies
!------------------------
allocate(d_co2ice(ngrid,nslope),d_h2oice(ngrid,nslope),d_co2ice_ini(ngrid,nslope))
call compute_tend(ngrid,nslope,min_co2_ice,d_co2ice)
call compute_tend(ngrid,nslope,min_h2o_ice,d_h2oice)
d_co2ice_ini = d_co2ice
deallocate(min_co2_ice,min_h2o_ice)

!------------------------
! I   Initialization
!    I_g Compute global surface pressure
!------------------------
total_surface = sum(cell_area)
ps_avg_global_ini = sum(cell_area*ps_avg)/total_surface
ps_avg_global_new = ps_avg_global_ini
write(*,*) "Total surface of the planet     =", total_surface
write(*,*) "Initial global average pressure =", ps_avg_global_ini

!------------------------
! I   Initialization
!    I_h Read the "startpem.nc"
!------------------------
write(*,*) '> Reading "startpem.nc"'
allocate(co2_ice(ngrid,nslope),h2o_ice(ngrid,nslope),layerings_map(ngrid,nslope))
allocate(delta_h2o_adsorbed(ngrid),delta_co2_adsorbed(ngrid),delta_h2o_icetablesublim(ngrid))
delta_h2o_icetablesublim = 0.
call pemetat0("startpem.nc",ngrid,nsoilmx,nsoilmx_PEM,nslope,timelen,timestep,TI_PEM,tsoil_PEM,icetable_depth,icetable_thickness,ice_porefilling, &
              tsurf_avg_yr1,tsurf_avg,q_co2_PEM_phys,q_h2o_PEM_phys,ps_timeseries,ps_avg_global_ini,d_h2oice,d_co2ice,co2_ice,h2o_ice,            &
              watersurf_density_avg,watersoil_density_PEM_avg,co2_adsorbed_phys,delta_co2_adsorbed,h2o_adsorbed_phys,delta_h2o_adsorbed,layerings_map)
deallocate(tsurf_avg_yr1)

! We save the places where h2o ice is sublimating
! We compute the surface of h2o ice sublimating
allocate(is_co2ice_sublim_ini(ngrid,nslope),is_h2oice_sublim_ini(ngrid,nslope),is_co2ice_ini(ngrid,nslope),co2ice_disappeared(ngrid,nslope))
co2ice_sublim_surf_ini = 0.
h2oice_ini_surf = 0.
is_co2ice_sublim_ini = .false.
is_h2oice_sublim_ini = .false.
is_co2ice_ini = .false.
co2ice_disappeared = .false.
totmass_co2ice_ini = 0.
totmass_atmco2_ini = 0.
if (layering_algo) then
    do ig = 1,ngrid
        do islope = 1,nslope
            if (is_co2ice_str(layerings_map(ig,islope)%top)) then
                co2_ice(ig,islope) = layerings_map(ig,islope)%top%h_co2ice*rho_co2ice
            else if (is_h2oice_str(layerings_map(ig,islope)%top)) then
                h2o_ice(ig,islope) = layerings_map(ig,islope)%top%h_h2oice*rho_h2oice
            else
                call subsurface_ice_layering(layerings_map(ig,islope),h2o_ice_depth(ig,islope),h2o_ice(ig,islope),co2_ice(ig,islope))
            endif
        enddo
    enddo
    ! We put the sublimating tendency coming from subsurface ice into the overall tendency
    where (h2o_ice_depth > 0. .and. zdqsdif_ssi_tot < -1.e-10) d_h2oice = zdqsdif_ssi_tot
endif
do i = 1,ngrid
    totmass_atmco2_ini = totmass_atmco2_ini + cell_area(i)*ps_avg(i)/g
    do islope = 1,nslope
        totmass_co2ice_ini = totmass_co2ice_ini + co2_ice(i,islope)*cell_area(i)*subslope_dist(i,islope)/cos(pi*def_slope_mean(islope)/180.)
        if (co2_ice(i,islope) > 0.) is_co2ice_ini(i,islope) = .true.
        if (d_co2ice(i,islope) < 0. .and. co2_ice(i,islope) > 0.) then
            is_co2ice_sublim_ini(i,islope) = .true.
            co2ice_sublim_surf_ini = co2ice_sublim_surf_ini + cell_area(i)*subslope_dist(i,islope)
        endif
        if (d_h2oice(i,islope) < 0.) then
            if (h2o_ice(i,islope) > 0.) then
                is_h2oice_sublim_ini(i,islope) = .true.
                h2oice_ini_surf = h2oice_ini_surf + cell_area(i)*subslope_dist(i,islope)
            else if (h2o_ice_depth(i,islope) > 0.) then
                is_h2oice_sublim_ini(i,islope) = .true.
            endif
        endif
    enddo
enddo
write(*,*) "Total initial surface of CO2 ice sublimating =", co2ice_sublim_surf_ini
write(*,*) "Total initial surface of H2O ice sublimating =", h2oice_ini_surf

totmass_adsco2_ini = 0.
totmass_adsh2o = 0.
if (adsorption_pem) then
    do ig = 1,ngrid
        do islope = 1,nslope
            do l = 1,nsoilmx_PEM - 1
                if (l == 1) then
                   totmass_adsco2_ini = totmass_adsco2_ini + co2_adsorbed_phys(ig,l,islope)*(layer_PEM(l))* &
                                       subslope_dist(ig,islope)/cos(pi*def_slope_mean(islope)/180.)*cell_area(ig)
                   totmass_adsh2o = totmass_adsh2o + h2o_adsorbed_phys(ig,l,islope)*(layer_PEM(l))* &
                                       subslope_dist(ig,islope)/cos(pi*def_slope_mean(islope)/180.)*cell_area(ig)
                else
                   totmass_adsco2_ini = totmass_adsco2_ini + co2_adsorbed_phys(ig,l,islope)*(layer_PEM(l) - layer_PEM(l-1))* &
                                       subslope_dist(ig,islope)/cos(pi*def_slope_mean(islope)/180.)*cell_area(ig)
                   totmass_adsh2o = totmass_adsh2o + h2o_adsorbed_phys(ig,l,islope)*(layer_PEM(l) - layer_PEM(l-1))* &
                                       subslope_dist(ig,islope)/cos(pi*def_slope_mean(islope)/180.)*cell_area(ig)
                endif
            enddo
        enddo
    enddo
    totmass_adsco2 = totmass_adsco2_ini
    write(*,*) "Tot mass of CO2 in the regolith =", totmass_adsco2
    write(*,*) "Tot mass of H2O in the regolith =", totmass_adsh2o
endif ! adsorption

!------------------------
! I   Initialization
!    I_i Compute orbit criterion
!------------------------
#ifndef CPP_STD
    call iniorbit(aphelie,periheli,year_day,peri_day,obliquit)
#else
    call iniorbit(apoastr,periastr,year_day,peri_day,obliquit)
#endif

n_myear_leg = Max_iter_pem
if (evol_orbit_pem) call orbit_param_criterion(i_myear,n_myear_leg)

!-------------------------- END INITIALIZATION -------------------------

!-------------------------------- RUN ----------------------------------
!------------------------
! II  Run
!    II_a Update pressure, ice and tracers
!------------------------
write(*,*)
write(*,*) '********* PEM cycle *********'
i_myear_leg = 0
stopPEM = 0
if (layering_algo) then
    allocate(h2o_ice_depth_old(ngrid,nslope),new_str(ngrid,nslope),new_lag(ngrid,nslope),current(ngrid,nslope))
    new_str = .true.
    new_lag = .true.
    do islope = 1,nslope
        do ig = 1,ngrid
            current(ig,islope)%p => layerings_map(ig,islope)%top
        enddo
    enddo
endif

do while (i_myear_leg < n_myear_leg .and. i_myear < n_myear)
! II.a.1. Compute updated global pressure
    write(*,'(a,f10.2)') ' **** Iteration of the PEM leg (Martian years): ', i_myear_leg + 1
    write(*,*) "> Updating the surface pressure"
    ps_avg_global_old = ps_avg_global_new
    do i = 1,ngrid
        do islope = 1,nslope
            ps_avg_global_new = ps_avg_global_new - CO2cond_ps*g*cell_area(i)*d_co2ice(i,islope)*subslope_dist(i,islope)/cos(pi*def_slope_mean(islope)/180.)/total_surface
        enddo
    enddo
    if (adsorption_pem) then
        do i = 1,ngrid
            ps_avg_global_new = ps_avg_global_new - g*cell_area(i)*delta_co2_adsorbed(i)/total_surface
        enddo
    endif
    ps_avg = ps_avg*ps_avg_global_new/ps_avg_global_old
    write(*,*) 'Global average pressure old time step:',ps_avg_global_old
    write(*,*) 'Global average pressure new time step:',ps_avg_global_new

! II.a.2. Pressure timeseries (the values are deleted when unused because of big memory consumption)
    write(*,*) "> Updating the surface pressure timeseries for the new pressure"
    allocate(zplev_timeseries_old(ngrid,nlayer + 1,timelen))
    do l = 1,nlayer + 1
        do ig = 1,ngrid
            zplev_timeseries_old(ig,l,:) = ap(l) + bp(l)*ps_timeseries(ig,:)
        enddo
    enddo
    ps_timeseries(:,:) = ps_timeseries(:,:)*ps_avg_global_new/ps_avg_global_old
    write(*,*) "> Updating the pressure levels timeseries for the new pressure"
    allocate(zplev_timeseries_new(ngrid,nlayer + 1,timelen))
    do l = 1,nlayer + 1
        do ig = 1,ngrid
            zplev_timeseries_new(ig,l,:) = ap(l) + bp(l)*ps_timeseries(ig,:)
        enddo
    enddo

! II.a.3. Tracers timeseries
    write(*,*) "> Updating the tracer VMR timeseries for the new pressure"
    allocate(vmr_co2_PEM_phys(ngrid,timelen))
    l = 1
    do ig = 1,ngrid
        do t = 1,timelen
            ! H2O
            q_h2o_PEM_phys(ig,t) = q_h2o_PEM_phys(ig,t)*(zplev_timeseries_old(ig,l,t) - zplev_timeseries_old(ig,l + 1,t))/ &
                                   (zplev_timeseries_new(ig,l,t) - zplev_timeseries_new(ig,l + 1,t))
            if (q_h2o_PEM_phys(ig,t) < 0) then
                q_h2o_PEM_phys(ig,t) = 1.e-30
            else if (q_h2o_PEM_phys(ig,t) > 1) then
                q_h2o_PEM_phys(ig,t) = 1.
            endif
            ! CO2
            q_co2_PEM_phys(ig,t) = q_co2_PEM_phys(ig,t)*(zplev_timeseries_old(ig,l,t) - zplev_timeseries_old(ig,l + 1,t))/ &
                                   (zplev_timeseries_new(ig,l,t) - zplev_timeseries_new(ig,l + 1,t))                       &
                                + ((zplev_timeseries_new(ig,l,t) - zplev_timeseries_new(ig,l + 1,t))                       &
                                -  (zplev_timeseries_old(ig,l,t) - zplev_timeseries_old(ig,l + 1,t)))/                     &
                                   (zplev_timeseries_new(ig,l,t) - zplev_timeseries_new(ig,l + 1,t))
            if (q_co2_PEM_phys(ig,t) < 0) then
                q_co2_PEM_phys(ig,t) = 1.e-30
            else if (q_co2_PEM_phys(ig,t) > 1) then
                q_co2_PEM_phys(ig,t) = 1.
            endif
            mmean = 1./(A*q_co2_PEM_phys(ig,t) + B)
            vmr_co2_PEM_phys(ig,t) = q_co2_PEM_phys(ig,t)*mmean/m_co2
        enddo
    enddo
    deallocate(zplev_timeseries_new,zplev_timeseries_old)

!------------------------
! II  Run
!    II_b Evolution of ice
!------------------------
    allocate(zshift_surf(ngrid,nslope),zlag(ngrid,nslope))
    if (layering_algo) then
        h2o_ice_depth_old = h2o_ice_depth

        allocate(d_h2oice_new(ngrid,nslope))
        call stopping_crit_h2o(ngrid,nslope,cell_area,delta_h2o_adsorbed,delta_h2o_icetablesublim,h2o_ice,d_h2oice,S_atm_2_h2o,S_h2o_2_atm,S_atm_2_h2oice,S_h2oice_2_atm,stopPEM)
        call balance_h2oice_reservoirs(ngrid,nslope,S_atm_2_h2o,S_h2o_2_atm,S_atm_2_h2oice,S_h2oice_2_atm,h2o_ice,d_h2oice,d_h2oice_new)
    
        do islope = 1,nslope
            do ig = 1,ngrid
                call make_layering(layerings_map(ig,islope),d_co2ice(ig,islope),d_h2oice_new(ig,islope),new_str(ig,islope),zshift_surf(ig,islope),new_lag(ig,islope),zlag(ig,islope),current(ig,islope)%p)
                !call print_layering(layerings_map(ig,islope))
                co2_ice(ig,islope) = 0.
                h2o_ice(ig,islope) = 0.
                h2o_ice_depth(ig,islope) = 0.
                if (is_co2ice_str(layerings_map(ig,islope)%top)) then
                    co2_ice(ig,islope) = layerings_map(ig,islope)%top%h_co2ice*rho_co2ice
                else if (is_h2oice_str(layerings_map(ig,islope)%top)) then
                    h2o_ice(ig,islope) = layerings_map(ig,islope)%top%h_h2oice*rho_h2oice
                else
                    call subsurface_ice_layering(layerings_map(ig,islope),h2o_ice_depth(ig,islope),h2o_ice(ig,islope),co2_ice(ig,islope))
                endif
            enddo
        enddo
        deallocate(d_h2oice_new)
    else
        zlag = 0.
        call evol_h2o_ice(ngrid,nslope,cell_area,delta_h2o_adsorbed,delta_h2o_icetablesublim,h2o_ice,d_h2oice,zshift_surf,stopPEM)
        call evol_co2_ice(ngrid,nslope,co2_ice,d_co2ice,zshift_surf)
    endif

!------------------------
! II  Run
!    II_c Flow of glaciers
!------------------------
    allocate(flag_co2flow(ngrid,nslope),flag_h2oflow(ngrid,nslope))
    if (co2ice_flow .and. nslope > 1) then
        call flow_co2glaciers(timelen,ngrid,nslope,iflat,subslope_dist,def_slope_mean,vmr_co2_PEM_phys, &
                              ps_timeseries,ps_avg_global_old,ps_avg_global_new,co2_ice,flag_co2flow)
        if (layering_algo) then
            do islope = 1,nslope
                do ig = 1,ngrid
                    layerings_map(ig,islope)%top%h_co2ice = co2_ice(ig,islope)/rho_co2ice
                enddo
            enddo
        endif
    endif
    if (h2oice_flow .and. nslope > 1) then
        call flow_h2oglaciers(ngrid,nslope,iflat,subslope_dist,def_slope_mean,tsurf_avg,h2o_ice,flag_h2oflow)
        if (layering_algo) then
            do islope = 1,nslope
                do ig = 1,ngrid
                    layerings_map(ig,islope)%top%h_h2oice = h2o_ice(ig,islope)/rho_h2oice
                enddo
            enddo
        endif
    endif

!------------------------
! II  Run
!    II_d Update surface and soil temperatures
!------------------------
! II_d.1 Update Tsurf
    call update_tsurf_nearest_baresoil(ngrid,nslope,iim,jjm_value,tsurf_avg,co2_ice,is_co2ice_ini,co2ice_disappeared)

    if (soil_pem) then
! II_d.2 Shifting soil temperature to surface
        call shift_tsoil2surf(ngrid,nsoilmx_PEM,nslope,zshift_surf,zlag,tsurf_avg,tsoil_PEM)

! II_d.3 Update soil temperature
        write(*,*)"> Updating soil temperature profile"
        allocate(tsoil_avg_old(ngrid,nsoilmx_PEM),tsoil_PEM_timeseries_old(ngrid,nsoilmx_PEM,nslope,timelen))
        tsoil_PEM_timeseries_old = tsoil_PEM_timeseries
        do islope = 1,nslope
            tsoil_avg_old = tsoil_PEM(:,:,islope)
            call compute_tsoil_pem(ngrid,nsoilmx_PEM,.true.,TI_PEM(:,:,islope),timestep,tsurf_avg(:,islope),tsoil_PEM(:,:,islope))
            call compute_tsoil_pem(ngrid,nsoilmx_PEM,.false.,TI_PEM(:,:,islope),timestep,tsurf_avg(:,islope),tsoil_PEM(:,:,islope))

            do t = 1,timelen
                do ig = 1,ngrid
                    do isoil = 1,nsoilmx_PEM
                        ! Update of soil temperature timeseries which is needed to compute the water soil density timeseries
                        tsoil_PEM_timeseries(ig,isoil,islope,t) = tsoil_PEM_timeseries(ig,isoil,islope,t)*tsoil_PEM(ig,isoil,islope)/tsoil_avg_old(ig,isoil)
                        ! Update of watersoil density
                        watersoil_density_PEM_timeseries(ig,isoil,islope,t) = exp(beta_clap_h2o/tsoil_PEM_timeseries(ig,isoil,islope,t) + alpha_clap_h2o)/tsoil_PEM_timeseries(ig,isoil,islope,t)*mmol(igcm_h2o_vap)/(mugaz*r)
                        if (isnan(tsoil_PEM(ig,isoil,islope))) call abort_pem("PEM - Update Tsoil","NaN detected in tsoil_PEM",1)
                    enddo
                enddo
            enddo
        enddo
        watersoil_density_PEM_avg = sum(watersoil_density_PEM_timeseries,4)/timelen
        deallocate(tsoil_avg_old)

! II_d.4 Update the ice table
        allocate(icetable_thickness_old(ngrid,nslope),ice_porefilling_old(ngrid,nsoilmx_PEM,nslope),icetable_depth_old(ngrid,nslope))
        if (icetable_equilibrium) then
            write(*,*) "> Updating ice table (equilibrium method)"
            icetable_thickness_old = icetable_thickness
            call computeice_table_equilibrium(ngrid,nslope,nsoilmx_PEM,watercaptag,watersurf_density_avg,watersoil_density_PEM_avg,TI_PEM(:,1,:),icetable_depth,icetable_thickness)
            call compute_massh2o_exchange_ssi(ngrid,nslope,nsoilmx_PEM,icetable_thickness_old,ice_porefilling_old,tsurf_avg,tsoil_PEM,delta_h2o_icetablesublim) ! Mass of H2O exchange between the ssi and the atmosphere
        else if (icetable_dynamic) then
            write(*,*) "> Updating ice table (dynamic method)"
            ice_porefilling_old = ice_porefilling
            icetable_depth_old = icetable_depth
            allocate(porefill(nsoilmx_PEM))
            do ig = 1,ngrid
                do islope = 1,nslope
                    call dyn_ss_ice_m(icetable_depth(ig,islope),tsurf_avg(ig,islope),tsoil_PEM(ig,:,islope),nsoilmx_PEM,TI_PEM(ig,1,nslope),ps_avg(ig),(/sum(q_h2o_PEM_phys(ig,:))/size(q_h2o_PEM_phys,2)/),ice_porefilling(ig,:,islope),porefill,ssi_depth)
                    icetable_depth(ig,islope) = ssi_depth
                    ice_porefilling(ig,:,islope) = porefill
                enddo
            enddo
            deallocate(porefill)
            call compute_massh2o_exchange_ssi(ngrid,nslope,nsoilmx_PEM,icetable_thickness_old,ice_porefilling_old,tsurf_avg,tsoil_PEM,delta_h2o_icetablesublim) ! Mass of H2O exchange between the ssi and the atmosphere
        endif
        deallocate(icetable_thickness_old,ice_porefilling_old)

! II_d.5 Update the soil thermal properties
        call update_soil_thermalproperties(ngrid,nslope,nsoilmx_PEM,d_h2oice,h2o_ice,ps_avg_global_new,icetable_depth,icetable_thickness,ice_porefilling,icetable_equilibrium,icetable_dynamic,TI_PEM)

! II_d.6 Update the mass of the regolith adsorbed
        totmass_adsco2 = 0.
        totmass_adsh2o = 0.
        if (adsorption_pem) then
            call regolith_adsorption(ngrid,nslope,nsoilmx_PEM,timelen,d_h2oice,d_co2ice,h2o_ice,co2_ice, &
                                     tsoil_PEM,TI_PEM,ps_timeseries,q_co2_PEM_phys,q_h2o_PEM_phys,       &
                                     h2o_adsorbed_phys,delta_h2o_adsorbed,co2_adsorbed_phys,delta_co2_adsorbed)
            do ig = 1,ngrid
                do islope = 1,nslope
                    do l = 1,nsoilmx_PEM
                        if (l == 1) then
                            totmass_adsco2 = totmass_adsco2 + co2_adsorbed_phys(ig,l,islope)*(layer_PEM(l))* &
                                       subslope_dist(ig,islope)/cos(pi*def_slope_mean(islope)/180.)*cell_area(ig)
                            totmass_adsh2o = totmass_adsh2o + h2o_adsorbed_phys(ig,l,islope)*(layer_PEM(l))* &
                                       subslope_dist(ig,islope)/cos(pi*def_slope_mean(islope)/180.)*cell_area(ig)
                        else
                            totmass_adsco2 = totmass_adsco2 + co2_adsorbed_phys(ig,l,islope)*(layer_PEM(l) - layer_PEM(l - 1))* &
                                       subslope_dist(ig,islope)/cos(pi*def_slope_mean(islope)/180.)*cell_area(ig)
                            totmass_adsh2o = totmass_adsh2o + h2o_adsorbed_phys(ig,l,islope)*(layer_PEM(l) - layer_PEM(l - 1))* &
                                       subslope_dist(ig,islope)/cos(pi*def_slope_mean(islope)/180.)*cell_area(ig)
                        endif
                    enddo
                enddo
            enddo
            write(*,*) "Total mass of CO2 in the regolith =", totmass_adsco2
            write(*,*) "Total mass of H2O in the regolith =", totmass_adsh2o
        endif
    endif !soil_pem
    deallocate(zshift_surf,zlag)

!------------------------
! II  Run
!    II_e Outputs
!------------------------
    call writediagpem(ngrid,'ps_avg','Global average pressure','Pa',0,(/ps_avg_global_new/))
    do islope = 1,nslope
        write(str2(1:2),'(i2.2)') islope
        call writediagpem(ngrid,'h2o_ice_slope'//str2,'H2O ice','kg.m-2',2,h2o_ice(:,islope))
        call writediagpem(ngrid,'co2_ice_slope'//str2,'CO2 ice','kg.m-2',2,co2_ice(:,islope))
        call writediagpem(ngrid,'d_h2oice_slope'//str2,'H2O ice tend','kg.m-2.year-1',2,d_h2oice(:,islope))
        call writediagpem(ngrid,'d_co2ice_slope'//str2,'CO2 ice tend','kg.m-2.year-1',2,d_co2ice(:,islope))
        call writediagpem(ngrid,'Flow_co2ice_slope'//str2,'CO2 ice flow','Boolean',2,real(flag_co2flow(:,islope)))
        call writediagpem(ngrid,'Flow_h2oice_slope'//str2,'H2O ice flow','Boolean',2,real(flag_h2oflow(:,islope)))
        call writediagpem(ngrid,'tsurf_slope'//str2,'tsurf','K',2,tsurf_avg(:,islope))
        if (icetable_equilibrium) then
            call writediagpem(ngrid,'ssi_depth_slope'//str2,'ice table depth','m',2,icetable_depth(:,islope))
            call writediagpem(ngrid,'ssi_thick_slope'//str2,'ice table thickness','m',2,icetable_thickness(:,islope))
        else if (icetable_dynamic) then
            call writediagpem(ngrid,'ssi_depth_slope'//str2,'ice table depth','m',2,icetable_depth(:,islope))
        endif

        if (soil_pem) then
            call writediagsoilpem(ngrid,'tsoil_PEM_slope'//str2,'tsoil','K',3,tsoil_PEM(:,:,islope))
            call writediagsoilpem(ngrid,'inertiesoil_PEM_slope'//str2,'TI','K',3,TI_PEM(:,:,islope))
            if (icetable_dynamic) call writediagsoilpem(ngrid,'ice_porefilling'//str2,'ice pore filling','-',3,ice_porefilling(:,:,islope))
            if (adsorption_pem) then
                call writediagsoilpem(ngrid,'co2_ads_slope'//str2,'co2_ads','K',3,co2_adsorbed_phys(:,:,islope))
                call writediagsoilpem(ngrid,'h2o_ads_slope'//str2,'h2o_ads','K',3,h2o_adsorbed_phys(:,:,islope))
            endif
        endif
    enddo
    deallocate(flag_co2flow,flag_h2oflow)

    ! Checking mass balance for CO2
    if (abs(CO2cond_ps - 1.) < 1.e-10) then
        totmass_co2ice = 0.
        totmass_atmco2 = 0.
        do ig = 1,ngrid
            totmass_atmco2 = totmass_atmco2 + cell_area(ig)*ps_avg(ig)/g
            do islope = 1,nslope
                totmass_co2ice = totmass_co2ice + co2_ice(ig,islope)*cell_area(ig)*subslope_dist(ig,islope)/cos(pi*def_slope_mean(islope)/180.)
            enddo
        enddo
        totmass_ini = max(totmass_atmco2_ini + totmass_co2ice_ini + totmass_adsco2_ini,1.e-10)
        write(*,'(a,f8.3,a)') " > Relative total CO2 mass balance = ", 100.*(totmass_atmco2 + totmass_co2ice + totmass_adsco2 - totmass_atmco2_ini - totmass_co2ice_ini - totmass_adsco2_ini)/totmass_ini, ' %'
        if (abs((totmass_atmco2 + totmass_co2ice + totmass_adsco2 - totmass_atmco2_ini - totmass_co2ice_ini - totmass_adsco2_ini)/totmass_ini) > 0.01) then
            write(*,*) '  /!\ Warning: mass balance is not conserved!'
            totmass_ini = max(totmass_atmco2_ini,1.e-10)
            write(*,*) '       Atmospheric CO2 mass balance = ', 100.*(totmass_atmco2 - totmass_atmco2_ini)/totmass_ini, ' %'
            totmass_ini = max(totmass_co2ice_ini,1.e-10)
            write(*,*) '       CO2 ice mass balance         = ', 100.*(totmass_co2ice - totmass_co2ice_ini)/totmass_ini, ' %'
            totmass_ini = max(totmass_adsco2_ini,1.e-10)
            write(*,*) '       Adsorbed CO2 mass balance    = ', 100.*(totmass_adsco2 - totmass_adsco2_ini)/totmass_ini, ' %'
        endif
    endif

!------------------------
! II  Run
!    II_f Update the tendencies
!------------------------
    call recomp_tend_co2(ngrid,nslope,timelen,d_co2ice,d_co2ice_ini,co2_ice,emis,vmr_co2_PCM,vmr_co2_PEM_phys,ps_timeseries,ps_avg_global_old,ps_avg_global_new)
    write(*,*) "> Updating the H2O sub-surface ice tendency due to lag layer"
    if (layering_algo) then
        do ig = 1,ngrid
            do islope = 1,nslope
                if (is_h2oice_sublim_ini(ig,islope) .and. h2o_ice_depth(ig,islope) > 0.) call recomp_tend_h2o(h2o_ice_depth_old(ig,islope),h2o_ice_depth(ig,islope),tsurf_avg(ig,islope),tsoil_PEM_timeseries_old(ig,:,islope,:),tsoil_PEM_timeseries(ig,:,islope,:),d_h2oice(ig,islope))
            enddo
        enddo
!~     else
!~         do ig = 1,ngrid
!~             do islope = 1,nslope
!~                 call recomp_tend_h2o(icetable_depth_old(ig,islope),icetable_depth(ig,islope),tsurf_avg(ig,islope),tsoil_PEM_timeseries_old(ig,:,islope,:),tsoil_PEM_timeseries(ig,:,islope,:),d_h2oice(ig,islope))
!~             enddo
!~         enddo
    endif
    if (soil_pem) deallocate(icetable_depth_old,tsoil_PEM_timeseries_old)
    deallocate(vmr_co2_PEM_phys)

!------------------------
! II  Run
!    II_g Checking the stopping criterion
!------------------------
    write(*,*) "> Checking the stopping criteria"
    call stopping_crit_h2o_ice(cell_area,h2oice_ini_surf,is_h2oice_sublim_ini,h2o_ice,stopPEM,ngrid)
    call stopping_crit_co2(cell_area,co2ice_sublim_surf_ini,is_co2ice_sublim_ini,co2_ice,stopPEM,ngrid,ps_avg_global_ini,ps_avg_global_new,nslope)
    i_myear_leg = i_myear_leg + dt
    i_myear = i_myear + dt
    if (stopPEM <= 0 .and. i_myear_leg >= n_myear_leg) stopPEM = 5
    if (stopPEM <= 0 .and. i_myear >= n_myear) stopPEM = 6
    call system_clock(c2)
    if (stopPEM <= 0 .and. timewall .and. real((c2 - c1)/cr) >= timelimit - antetime) stopPEM = 7
    if (stopPEM > 0) then
        select case (stopPEM)
            case(1)
                write(*,'(a,i0,a)') " **** STOPPING because surface of h2o ice sublimating is too low: ", stopPEM, ". See message above."
            case(2)
                write(*,'(a,i0,a)') " **** STOPPING because tendencies on h2o ice = 0: ", stopPEM, ". See message above."
            case(3)
                write(*,'(a,i0,a)') " **** STOPPING because surface of co2 ice sublimating is too low: ", stopPEM, ". See message above."
            case(4)
                write(*,'(a,i0,a)') " **** STOPPING because surface global pressure changed too much: ", stopPEM, ". See message above."
            case(5)
                write(*,'(a,i0)') " **** STOPPING because maximum number of iterations is reached (possibly due to orbital parameters): ", stopPEM
            case(6)
                write(*,'(a,i0)') " **** STOPPING because maximum number of Martian years to be simulated is reached: ", stopPEM
            case(7)
                write(*,'(a,i0)') " **** STOPPING because the time limit for the PEM job will be reached soon: ", stopPEM
            case default
                write(*,'(a,i0)') " **** STOPPING with unknown stopping criterion code: ", stopPEM
        end select
        exit
    else
        write(*,'(a,f10.2,a)') ' **** The chained simulation has run for ',i_myear,' Martian years.'
        write(*,*) '**** The PEM can continue!'
        write(*,*) '****'
    endif
enddo ! big time iteration loop of the pem
deallocate(vmr_co2_PCM,q_co2_PEM_phys,q_h2o_PEM_phys,delta_co2_adsorbed)
deallocate(watersoil_density_PEM_avg,watersurf_density_avg)
deallocate(ps_timeseries,tsoil_PEM_timeseries,watersoil_density_PEM_timeseries)
deallocate(co2ice_disappeared,delta_h2o_adsorbed,delta_h2o_icetablesublim)
deallocate(d_co2ice,d_co2ice_ini,d_h2oice)
deallocate(is_co2ice_ini,is_co2ice_sublim_ini,is_h2oice_sublim_ini)
if (layering_algo) deallocate(h2o_ice_depth_old,new_str,new_lag,current)
!------------------------------ END RUN --------------------------------

!------------------------------- OUTPUT --------------------------------
!------------------------
! III Output
!    III_a Update surface values for the PCM start files
!------------------------
write(*,*)
write(*,*) '********* PEM finalization *********'
! III_a.1 Ice update for start file
write(*,*) '> Reconstructing perennial ice and frost for the PCM'
watercap = 0.
perennial_co2ice = co2_ice
do ig = 1,ngrid
    ! H2O ice metamorphism
    !if (metam_h2oice .and. sum(qsurf(ig,igcm_h2o_ice,:)*subslope_dist(ig,:)/cos(pi*def_slope_mean(:)/180.)) > metam_h2oice_threshold) then
    !    h2o_ice(ig,:) = h2o_ice(ig,:) + qsurf(ig,igcm_h2o_ice,:) - metam_h2oice_threshold
    !    qsurf(ig,igcm_h2o_ice,:) = metam_h2oice_threshold
    !endif

    ! Is H2O ice still considered as an infinite reservoir for the PCM?
    if (sum(h2o_ice(ig,:)*subslope_dist(ig,:)/cos(pi*def_slope_mean(:)/180.)) > inf_h2oice_threshold) then
        ! There is enough ice to be considered as an infinite reservoir
        watercaptag(ig) = .true.
    else
        ! Too little ice to be considered as an infinite reservoir so ice is transferred to the frost
        watercaptag(ig) = .false.
        qsurf(ig,igcm_h2o_ice,:) = qsurf(ig,igcm_h2o_ice,:) + h2o_ice(ig,:)
        h2o_ice(ig,:) = 0.
    endif

    ! CO2 ice metamorphism
    !if (metam_co2ice .and. sum(qsurf(ig,igcm_co2,:)*subslope_dist(ig,:)/cos(pi*def_slope_mean(:)/180.)) > metam_co2ice_threshold) then
    !    perennial_co2ice(ig,:) = perennial_co2ice(ig,:) + qsurf(ig,igcm_co2,:) - metam_co2ice_threshold
    !    qsurf(ig,igcm_co2,:) = metam_co2ice_threshold
    !endif
enddo

! III.a.3. Tsurf update for start file
write(*,*) '> Reconstructing the surface temperature for the PCM'
tsurf = tsurf_avg + tsurf_dev
deallocate(tsurf_dev)

! III_a.4 Tsoil update for start file
if (soil_pem) then
    write(*,*) '> Reconstructing the soil temperature profile for the PCM'
    inertiesoil = TI_PEM(:,:nsoilmx,:)
    ! Tsurf has evolved and so the soil temperature profile needs to be adapted to match this new value
    do isoil = 1,nsoilmx
        tsoil_dev(:,isoil,:) = tsoil_dev(:,isoil,:)*(tsurf_avg(:,:) - tsoil_PEM(:,1,:))/tsoil_dev(:,1,:)
    enddo
    tsoil = tsoil_PEM(:,1:nsoilmx,:) + tsoil_dev
#ifndef CPP_STD
    flux_geo = fluxgeo
#endif
endif
deallocate(tsurf_avg,tsoil_dev)

! III_a.5 Pressure update for start file
write(*,*) '> Reconstructing the pressure for the PCM'
allocate(ps_start(ngrid))
! The pressure deviation is rescaled as well to avoid disproportionate oscillations in case of huge average pressure drop
ps_start = ps_avg + ps_dev*ps_avg_global_new/ps_avg_global_ini
deallocate(ps_avg,ps_dev)

! III_a.6 Tracers update for start file
write(*,*) '> Reconstructing the tracer VMR for the PCM'
allocate(zplev_start0(ngrid,nlayer + 1),zplev_new(ngrid,nlayer + 1))
do l = 1,nlayer + 1
    zplev_start0(:,l) = ap(l) + bp(l)*ps_start0
    zplev_new(:,l) = ap(l) + bp(l)*ps_start
enddo

do nnq = 1,nqtot
    if (noms(nnq) /= "co2") then
        do l = 1,llm - 1
            do ig = 1,ngrid
                q(ig,l,nnq) = q(ig,l,nnq)*(zplev_start0(ig,l) - zplev_start0(ig,l + 1))/(zplev_new(ig,l) - zplev_new(ig,l + 1))
            enddo
            q(:,llm,nnq) = q(:,llm - 1,nnq)
        enddo
    else
        do l = 1,llm - 1
            do ig = 1,ngrid
                q(ig,l,nnq) = q(ig,l,nnq)*(zplev_start0(ig,l) - zplev_start0(ig,l + 1))/(zplev_new(ig,l) - zplev_new(ig,l + 1)) &
                              + ((zplev_new(ig,l) - zplev_new(ig,l + 1)) - (zplev_start0(ig,l) - zplev_start0(ig,l + 1)))/(zplev_new(ig,l) - zplev_new(ig,l + 1))
            enddo
            q(:,llm,nnq) = q(:,llm - 1,nnq)
        enddo
    endif
enddo
deallocate(zplev_start0)

! Conserving the tracers mass for start file
do nnq = 1,nqtot
    do ig = 1,ngrid
        do l = 1,llm - 1
            if (q(ig,l,nnq) > 1 .and. (noms(nnq) /= "dust_number") .and. (noms(nnq) /= "ccn_number") .and. (noms(nnq) /= "stormdust_number") .and. (noms(nnq) /= "topdust_number")) then
                extra_mass = (q(ig,l,nnq) - 1)*(zplev_new(ig,l) - zplev_new(ig,l + 1))
                q(ig,l,nnq) = 1.
                q(ig,l + 1,nnq) = q(ig,l + 1,nnq) + extra_mass*(zplev_new(ig,l + 1) - zplev_new(ig,l + 2))
                write(*,*) 'extra ',noms(nnq),extra_mass, noms(nnq) /= "dust_number",noms(nnq) /= "ccn_number"
            endif
            if (q(ig,l,nnq) < 0) q(ig,l,nnq) = 1.e-30
        enddo
    enddo
enddo
deallocate(zplev_new)

! III_a.7 Albedo update for start file
write(*,*) '> Reconstructing the albedo for the PCM'
do ig = 1,ngrid
    if (latitude(ig) < 0.) then
        icap = 2 ! Southern hemisphere
    else
        icap = 1 ! Northern hemisphere
    endif
    do islope = 1,nslope
        ! Bare ground
        albedo(ig,:,islope) = albedodat(ig)
        emis(ig,islope) = emissiv

        ! CO2 ice/frost is treated after H20 ice/frost because it is considered dominant
        ! H2O ice
        if (h2o_ice(ig,islope) > 0.) then
            albedo(ig,:,islope) = albedo_h2o_cap
            emis(ig,islope) = 1.
        endif
        ! CO2 ice
        if (co2_ice(ig,islope) > 0.) then
            albedo(ig,:,islope) = albedo_perennialco2(icap)
            emis(ig,islope) = emisice(icap)
        endif
        ! H2O frost
        if (qsurf(ig,igcm_h2o_ice,islope) > 0.) then
            albedo(ig,:,islope) = albedo_h2o_frost
            emis(ig,islope) = 1.
        endif
        ! CO2 frost
        if (qsurf(ig,igcm_co2,islope) > 0.) then
            albedo(ig,:,islope) = albedice(icap)
            emis(ig,islope) = emisice(icap)
        endif
    enddo
enddo

! III_a.8 Orbital parameters update for start file
write(*,*) '> Setting the new orbital parameters'
if (evol_orbit_pem) call recomp_orb_param(i_myear,i_myear_leg)

!------------------------
! III Output
!    III_b Write "restart.nc" and "restartfi.nc"
!------------------------
! III_b.1 Write "restart.nc"
ptimestep = iphysiq*daysec/real(day_step)/nsplit_phys ! dtphys/nsplit_phys
pday = day_ini
ztime_fin = time_phys
#ifndef CPP_1D
    write(*,*) '> Writing "restart.nc"'
    ! Correction on teta due to surface pressure changes
    allocate(pdyn(ip1jmp1))
    call gr_fi_dyn(1,ngrid,iip1,jjp1,ps_start0/ps_start,pdyn)
    do i = 1,ip1jmp1
        teta(i,:) = teta(i,:)*pdyn(i)**rcp
    enddo
    ! Correction on atmospheric pressure
    allocate(p(ip1jmp1,nlayer + 1))
    call gr_fi_dyn(1,ngrid,iip1,jjp1,ps_start,pdyn)
    call pression(ip1jmp1,ap,bp,pdyn,p)
    ! Correction on the mass of atmosphere
    call massdair(p,masse)
    call dynredem0("restart.nc",day_ini,phis)
    call dynredem1("restart.nc",time_0,vcov,ucov,teta,q,masse,pdyn)
    deallocate(ap,bp,p,pdyn)
#else
    write(*,*) '> Writing "restart1D.txt"'
    call writerestart1D('restart1D.txt',ps_start(1),tsurf(1,:),nlayer,size(tsurf,2),teta,ucov,vcov,nq,noms,qsurf(1,:,:),q)
#endif
deallocate(ps_start0,ps_start)

! III_b.2 Write the "restartfi.nc"
write(*,*) '> Writing "restartfi.nc"'
#ifndef CPP_STD
    call physdem0("restartfi.nc",longitude,latitude,nsoilmx,ngrid, &
                  nlayer,nq,ptimestep,pday,0.,cell_area,albedodat, &
                  inertiedat,def_slope,subslope_dist)
    call physdem1("restartfi.nc",nsoilmx,ngrid,nlayer,nq,nqsoil,      &
                  ptimestep,ztime_fin,tsurf,tsoil,inertiesoil,        &
                  albedo,emis,q2,qsurf,qsoil,tauscaling,totcloudfrac, &
                  wstar,watercap,perennial_co2ice)
#else
    if (allocated(noms)) deallocate(noms)
    deallocate(qsurf,tsurf,tsoil,emis,watercap,watercaptag,albedo,inertiesoil)
    call physdem0("restartfi.nc",longitude,latitude,nsoilmx,ngrid, &
                  nlayer,nq,ptimestep,pday,time_phys,cell_area,    &
                  albedo_bareground,inertiedat,zmea,zstd,zsig,zgam,zthe)
    call physdem1("restartfi.nc",nsoilmx,ngrid,nlayer,nq,nqsoil,       &
                  ptimestep,ztime_fin,tsurf,tsoil,emis,q2,qsurf,qsoil, &
                  cloudfrac,totcloudfrac,hice,rnat,pctsrf_sic,tslab,   &
                  tsea_ice,sea_ice)
#endif

!------------------------
! III Output
!    III_c Write the "restartpem.nc"
!------------------------
write(*,*) '> Writing "restartpem.nc"'
if (layering_algo) nb_str_max = get_nb_str_max(layerings_map,ngrid,nslope) ! Get the maximum number of "stratum" in the layerings_mapication (layerings)
call pemdem0("restartpem.nc",longitude,latitude,cell_area,ngrid,nslope,def_slope,subslope_dist)
call pemdem1("restartpem.nc",i_myear,nsoilmx_PEM,ngrid,nslope,tsoil_PEM,TI_PEM,icetable_depth,icetable_thickness,ice_porefilling, &
             co2_adsorbed_phys,h2o_adsorbed_phys,h2o_ice,layerings_map)

call info_PEM(i_myear_leg,stopPEM,i_myear,n_myear)

write(*,*)
write(*,*) '****** PEM final information *******'
write(*,'(a,f16.4,a)') " + The PEM leg has run for ", i_myear_leg, " Martian years."
write(*,'(a,f16.4,a,f16.4,a)') " + The chained simulation has run for ", i_myear, " Martian years =", i_myear*convert_years, " Earth years."
write(*,'(a,f16.4,a)') " + The reached date is now ", (year_bp_ini + i_myear)*convert_years, " Earth years."
write(*,*) "+ PEM: so far, so good!"
write(*,*) '************************************'

if (layering_algo) then
    do islope = 1,nslope
        do i = 1,ngrid
            call del_layering(layerings_map(i,islope))
        enddo
    enddo
endif
deallocate(q,longitude,latitude,cell_area,tsoil_PEM)
deallocate(co2_ice,h2o_ice,layerings_map)
!----------------------------- END OUTPUT ------------------------------

END PROGRAM pem