MODULE time_evol_mod

IMPLICIT NONE  

  integer :: year_bp_ini         !     Initial year (in Planetary years) of the simulation of the PEM defined in run.def (in Earth years)
  integer :: dt_pem              !     Time step used by the PEM in Planetary years
  real    :: convert_years       !     Conversion ratio from Planetary years to Earth years
  real    :: water_ice_criterion !     Percentage of change of the surface of water ice sublimating before stopping the PEM 
  real    :: co2_ice_criterion   !     Percentage of change of the surface of co2 ice sublimating before stopping the PEM 
  real    :: ps_criterion        !     Percentage of change of averaged surface pressure before stopping the PEM
  integer :: Max_iter_pem        !     Maximal number of iteration when converging to a steady state, read in evol.def
  logical :: evol_orbit_pem      !     True if we want to follow the orbital parameters of obl_ecc_lsp.asc, read in evol.def
  logical :: var_obl             !     True if we want the PEM to follow obl_ecc_lsp.asc parameters for obliquity 
  logical :: var_ecc             !     True if we want the PEM to follow obl_ecc_lsp.asc parameters for excenticity
  logical :: var_lsp             !     True if we want the PEM to follow obl_ecc_lsp.asc parameters for ls perihelie

END MODULE time_evol_mod