.. _doc.parasubs:

parasubs.txt : namelist for substances 
---------------------------------------
These namelists are used only if **key_substance** is activated.

 * namecosys : **general parameters relative to the substances (other than T & S)**
     * *file_outflow*  : file defining outflows (name, location, unit...). No outflow if bad file name (:ref:`river_substance`)
     * *name_filesubs* : file defining substances (name, unit, type...) (:ref:`doc_variabledat`)
     * *filevardiag*   : file describing diagnoses variables (name, unit, number, dimension, presence in water/sediment...) (:ref:`diag_variable`)
     * *date_startsub* : starting date of the computation of chemical, biological or sediment processes
     * *l_restart_subs* : .true. if all substances are saved for restarts.
     * *l_obc_ogcm_rc* : .true. if the substance boundary condition has to be read from the open boundary file
     * *file_obc_subs_s*, *file_obc_subs_n*, *file_obc_subs_w*, *file_obc_subs_e*,  : name of file for southern/northern/western/eastern open boundary conditions of substance
     * *l_out_log*  : if .true. saving of substance concentration uses the logarithm format
     * *l_cvrain_readfile* : if .true. reading concentrations in rainwater from a file (varying concentrations over time); only for substances whose concentration in rainwater is set to non-zero data in the file variable.dat (:ref:`atmospheric_substance`)
     * *l_subflxatm_readfile* : if .true. reading a file of dry atmospheric deposits (varying over time); only for substances with the deposit is given nonzero in the file variable.dat
     * *sflx_sub_atm_depth* : depth until which the atmopheric flux related to substances is distributed
     * *l_subflxatm_xyt* : .true. if atmospheric fluxes of some substances vary in space and time         
     * *file_flxatm_subs* : input file name if *l_subflxatm_xyt* =.true.                   
     * *l_bilan*   : .true. for the computation of the balance. (:ref:`budget_substance`)
     * *name_bilfil* : name of the file where zones and borders are defined for budgets. ='' if only one budget zone which cover all the domain (zero open border and no need to create a file for define zones and borders) 
     * *dtout_budget*  : time step (hour) for budgets and fluxes output 
     * *date_start_budget*  : starting date of budget and fluxes computation
     * *nb_border*     :  number of border (open and closed) for estimating fluxes and budgets (=1 if name_bilfil='')
     * *l_driv_cst* : If .true. the driving variables are constant in time. (default). If .false. the driving variables are interpolated (every dt_driv time step) from an input file or a function defined by the user in *usersubstance module*.
     * *dt_driv* : time step for estimation of driving variables

 * nammessat : ** satellit SPM related parameters (if key_messat and key_biolo)**
     * *l_messat_clim* = .true. if using SPM data from climatology
     * *filemessat_clim* = climatology file
     * *l_messat_obs* = .true. if using SPM data from satellite images directly
     * *filemessat_obs* = satellite file