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name content 4C variable name unit Day day of the year iday - Year year of simulation time - Temp mean air temperature of the day airtemp °C Rad solar radiation of the day rad J/cm² Prec precipitation of the day prec mm/m² Intercep canopy interception of the day interc_can mm/m² Snow water equivalent of snow snow mm/m² PET potential evapotranspiration pet mm/m² AET actual evapotranspiration aet mm/m² Transdem total potential transpiration demand trans_dem mm/m² Transtree potential transpiration demand of trees trans_tree mm/m² Transsveg potential transpiration demand of ground vegetation trans_sveg mm/m² GP_can unstressed stomatal conductance of the canopy gp_can mol/m² Respsoil daily soil respiration respsoil g C/m² Nleach_d daily N leaching from last layer
Nleach g N/m² Nupt_d total daily N uptake Nupt_d g N/m² Nmin_d_c cumulative netto mineralisation N_min g N/m² N_antot total anorganic N of soil N_an_tot g N/m² N_Depo daily total N deposition <(NO_dep + NH_dep) * 1000> g N/m² Cover covering cover - LAI leaf area index LAI - s_Light relative light intensitiy on the ground Irelpool(0) - toFPARcan fraction of absorbed light for the whole canopy totFPARcan - fire_indi forest fire indicator (east) fire_indi - fire_e forest fire index east (M68 international) fire(2)%index - fire_w forest fire index west fire(1)%index - snowday days with continious snow cover snow_day day drIndd daily drought index for the whole stand as average over all cohorts weighted by number of trees drIndd - buckroot bucket size of rooting zone bucks_root mm buck100 bucket size of 1 m depth bucks_100 mm cl_WatBal climatic water balance as difference between precipitation and potential evapotranspiration < prec-pet > mm 
name content 4C variable name unit Day day of the year iday - Year year of simulation time - species_name short name of species spar(j)%species_short_name - number internal species number j - Ndem cumulative daily nitrogen demand per species svar(j)%Ndem g N/m² Nupt cumulative daily nitrogen uptake per species svar(j)%Nupt g N/m² Ndemp N demand per species and potosynthesis period svar(j)%Ndemp g N/m² Nuptp N uptake per species and potosynthesis period svar(j)%Nuptp g N/m² RedN nitrogen reduction factor of photosynthesis svar(j)%RedN -
Daily Output
Daily output variables are the state variables valid at the actual day.
Naming of the output file as follows: <sitename>_<var>.out<anz_sim>
with:
<sitename> location name
<var> content description (s. table)
<anz_sim> number of simulation
example: site1_day.out2 daily output of several scalars of water and C/N balance at location site1 from the second simulation run
Daily output for cohorts is decribed in the chapter cohort outputs.
The following tables give an overview of the name and contents of the output files with daily data
Daily output of scalars and fields
| 4C variable name | |||
| airstr_be | daily aeration stress factor beech | ||
| airstr_pi | daily aeration stress factor pine | ||
| Chumd | C content of humus (hum) per soil layer | C_hum | g C/m² |
| Copmd | C content of organic primary matter (OPM) per layer | C_opm | g C/m² |
| COPMfract | C content of organic primary matter (OPM) fractions in the entire soil profile | ||
| day | collection of daily scalar variables | |
|
| NH4 | NH4 content per soil layer | NH4 | g N/m² |
| NH4c | NH4 concentration per soil layer | |
mg N/l |
| NO3 | NO3 content per soil layer | NO3 | g N/m² |
| NO3c | NO3 concentration per soil layer | |
mg N/l |
| Nhumd | N content of humus (hum) per soil layer | N_hum | g N/m² |
| Nopmd | N content of organic primary matter (OPM) per soil layer | N_opm | g N/m² |
| NOPMfract | N content of organic primary matter (OPM) fractions in the entire soil profile |
||
| Nuptd | daily nitrogen uptake by roots per soil layer | Nupt | g N/m² |
| perc | daily percolation of water per soil layer | perc | mm |
| specd | daily species variables | svar | |
| temp | daily soil temperature per soil layer | temps | °C |
| water | daily soil water content per soil layer | wats | mm |
| watvol | daily soil water content per soil layer | watvol | vol% |
| wupt | daily water uptake by roots per soil layer |
wupt_r | mm |
Expressions in < ... > are calculations befor output
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