Simulation Configuration

The simulation configuration section is the first part of the schedule file. You can copy/paste then modify the following to start your schedule file:

1               Starting year
2010            Last year
not-used        Site file name
0               Labeling type
0               Labeling year
-1              Microcosm
0               CO2 Systems
1               Initial system
CPR             Initial crop
                Initial tree

Description of the configuration items:

Starting year, Last year

The years for the start and end of the simulation.

Site file name

Not used in Century5/DayCent5.

Labeling type

0 = No labeling using C isotopes
1 = 14C labeling
2 = 13C labeling (stable isotope)

Labeling year

Simulation year to start using isotope labeling. Ignored if labeling type is zero.

For more information on simulating C isotopes, see Labeled Carbon (¹⁴C and ¹³C).

Microcosm

If negative, a microcosm is not simulated. If >= zero, this value is the constant microcosm temperature.

CO2 Systems

0 = (zero) no CO₂ effect.

1 = simulate a linear atmospheric CO₂ effect. Next, on the same line, specify the simulation start and end years in which the CO₂ effects will be applied. For example:

1 1900 2000     CO2 Systems

2 = Read a file of atmospheric CO₂ concentration values (ppm) per year. Next, on the same line, specify the simulation start and end years in which the CO₂ data will be applied. On the following line, provide the CO₂ data file name. For example:

2 1900 2000     CO2 Systems
CO2.txt

The file can be stored either in the directory from which Century5 or DayCent5 are run, or in a path in the weather data paths file. To learn how to use this file, see Locations of Weather Data Files.

For more information on simulating CO2 effects, see Enriched Atmospheric CO2 Effects.

Initial system

Enter the management type at the beginning of the simulation.

1 = Crop or grassland
2 = Forest or shrubland
3 = Savanna: Crop or Grassland and Forest

Initial crop or grass

The crop parameter set will be used to initialize the lignin content of standing dead, surface, and below ground litter pools at the start of the simulation. Leave blank if no crop is initially simulated.

Initial tree or shrub

The tree parameter set will be used to initialize the lignin content of the wood and litter pools at the start of the simulation. Leave blank if no tree is initially simulated.

Simulation Configuration

See Also