Standard outputs

LandscapeDNDC will write simulation results into several output files. These files are in default mode plain text files using the line endings according to the platform where the simulations have been performed. Be aware that, for example, Windows and Unix/Linux do not have identical line endings in text files.

The standard outputs are classified according to the ecosystem compartments / process functionalities:

• Soilchemistry output
  Soil items, e.g., soil organic carbon and nitrogen pools, fluxes of various carbon and nitrogen species in and out of the soil system
• Vegetation physiology output
  Vegetation items such as biomasses, photosynthesis and respiration rates, stress indicators, ...
• Vegetation structure output
  Strucutral components of the vegetaion such as stem diameter and height, crown width. Majorly used for forest simulations.
• Microclimate output
  This holds everything with regard to temperature and radiation within the canopy and soil.
• Management output
  ...
• Watercycle output
  This holds everything regarding hydrology, e.g., water contents in deffierent depths, water fluxes in and out of the system, ...
• Ecosystem output
  ...
• Inventory output
  ...
• GGCMI output
  ...
• DSS output
  ...

Nearly all ecosystem standard sinks offer outputs for the three major timemodes:

• subdaily output (by default having suffix subdaily)
• daily output (by default having suffix daily)
• yearly output (by default having suffix yearly)

For more detailed output LandscapeDNDC provides for most ecosystem standard sinks 'layer-sinks' writing entities reflecting internal discretization.

In the following all output files are described in detail. Each data record in all files contains information about the kernel associated to the record and the simulation time of the record:

• id
  The ID of the kernel (e.g. grid cell) that produced the output record. Note that currently the source identifier associated with a kernel (i.e. cell) is not written to the output sinks. This means, that reading kernel setups from more than one source may cause ambigious outputs, if IDs are not unique.
• year
  The simulation year of the output record
• day
  The simulation Julian day of the output record (only day and subday sinks)
• subday
  The simulation subday of the output record (only subday sinks)
• layer
  The soil layer of the output record (only 'layer-sinks')

Nomenclature

• Fluxes may contain a leading symbol in lowercase letters expressing the reference time period. The temporal dimension in the unit may then be omitted:
  s: subdaily
  d: daily
  a: annual
  Examples:
  dN_no3_leach[kg:ha-1] -> daily leaching of NO3
  aN_no3_leach[kg:ha-1] -> yearly leaching of NO3
• Masses of complex matter may be given in reduced form in capital letters:
  C: mass of carbon
  N: mass of nitrogen
  DW: mass of dry matter
  Examples:
  dN_no3_leach[kg:ha-1] -> daily mass of leached nitrogen in form of NO3 (not including mass of oxygen)
  d_no3_leach[kg:ha-1] -> daily mass of leached NO3 (including mass of nitrogen and oxygen)
  
• The two optional indications of reference time period and reduced form of complex matter are given without delimiter:
  dN_no3_leach[kg:ha-1] -> correct
  d_N_no3_leach[kg:ha-1] -> incorrect
  
• Descriptive components are delimited by underscores. Arithmetic symbols are not allowed (e.g., "+", "-", "/", "*")
• Units are given at the end in square brackets: dN_no3_leach[kg:ha-1] -> correct
  dN_no3[kg:ha-1]_leach -> incorrect
  
• Components of units may be optional delimited by a colon to avoid ambiguity:
  [m:m-2] -> m per square meter
  [mm-2] -> per square millimeter
  
• There is no delimiter before the unit
  dN_no3_leach[kg:ha-1] -> correct
  dN_no3_leach_[kg:ha-1] -> incorrect