Outputfiles¶
Output files can by default created in plain text format, but can also be set to netcdf by changing the flag i_write_nc to .True.
results_daily.txt¶
The file “results_daily.txt” is an output file from VOM, containing daily weather, flux and state variable data in ascii format, e.g.:
| fyear | Day of the year |
| fmonth | Month of the year |
| fday | Day of the month |
| nday | Day of the model |
| nhour | Last hour of day |
| rain | Daily rain fall in mm/d |
| tairmax | Daily max. Air temp in °C |
| tairmin | Daily min. Air temp in °C |
| par | Photosynthetically active Photon Flux Density (in mol m-2 d-1) |
| vd | Daily average atmospheric vapour deficit (in mol mol-1) |
| esoil | Daily soil evaporation rate (m d-1) |
| jmax25t | Electron transport capacity at 25oC by trees (in mol m-2 s-1) |
| jmax25g | Electron transport capacity at 25oC by grasses (in mol m-2 s-1) |
| jmax25ts | Electron transport capacity at 25oC by trees, shaded part (in mol m-2 s-1) |
| jmax25gs | Electron transport capacity at 25oC by grasses, shaded part (in mol m-2 s-1) |
| pc | Area fraction covered by grasses and trees combined |
| rlt | Daily leaf respiration rate by trees (in mol m-2 d-1) |
| rlh | Daily leaf respiration rate by grasses (in mol m-2 d-1) |
| lambdat | dE/dA in trees, in mol/mol |
| lambdag | dE/dA in grasses, in mol/mol |
| rrt | Daily root respiration rate by trees (in mol m-2 d-1) |
| rrg | Daily root respiration rate by grasses (in mol m-2 d-1) |
| asst | CO2 uptake rate by trees (in mol m-2 d-1) |
| assg | CO2 uptake rate by grasses (in mol m-2 d-1) |
| su_avg | Average soil saturation degree in the unsaturated zone at midnight (dimensionless) |
| zw | Thickness of the saturated zone (in m) |
| ws | Total soil water storage (in m) |
| spgfcf | Daily seepage face flow (=subsurface runoff, in m d-1) |
| infx | Daily infiltration excess runoff (in m d-1) |
| etmt | Daily transpiration rate by trees (in m d-1) |
| etmg | Daily transpiration rate by grasses (in m d-1) |
| su_1 | Soil saturation degree in the top soil layer at midnight (dimensionless) |
| topt | Optimal temperature for photosynthesis (in oC) |
| tcg | Grass foliage turnover costs (mol/m2/s) |
| tct | Tree foliage turnover costs (mol/m2/s) |
| cpccg_d | Grass water transport costs (mol/m2/s) |
| cpcct_d | Tree water transport costs (mol/m2/s) |
| fsun_t | Fraction of sun trees (-) |
| fshade_t | Fraction of shade trees (-) |
| fsun_g | Fraction of sun grasses (-) |
| fshade_g | Fraction of shade grasses (-) |
| lai_t | Leaf area index trees (-) |
| lai_g | Leaf area index grasses (-) |
| lai_tot | Total leaf area index (-) |
| cai_g | Crown area index grasses (-) |
| ncp_g | Daily Net Carbon profit grasses (in mol m-2) |
| ncp_g | Daily Net Carbon profit trees (in mol m-2) |
results_hourly.txt¶
| fyear | Day of the year |
| fmonth | Month of the year |
| fday | Day of the month |
| nday | Day of the model |
| nhour | Hour |
| rain | Rainfall rate in m/s |
| tair | Air temp in °C |
| par | Photosynthetically active Photon Flux Density (in mol m-2 s-1) |
| vd | Atmospheric vapour deficit (in mol mol-1) |
| esoil | Hourly soil evaporation rate (m h-1) |
| jmax25t | Electron transport capacity at 25oC by trees (in mol m-2 s-1) |
| jmax25g | Electron transport capacity at 25oC by grasses (in mol m-2 s-1) |
| pc | Area fraction covered by grasses and trees combined |
| mqt | Tissue water content in trees (in kg m-2) |
| rl | Leaf respiration rate by trees and grasses combined (in mol m-2 s-1) |
| lambdat | dE/dA in trees, in mol/mol |
| lambdag | dE/dA in grasses, in mol/mol |
| rr | Rroot respiration rate by trees and grasses combined (in mol m-2 s-1) |
| asst | Hourly CO2 uptake rate by trees (in mol m-2 h-1) |
| assg | Hourly CO2 uptake rate by grasses (in mol m-2 h-1) |
| zw | Thickness of the saturated zone (in m) |
| ws | Total soil water storage (in m) |
| spgfcf | Hourly seepage face flow (=subsurface runoff, in m h-1) |
| infx | Hourly infiltration excess runoff (in m h-1) |
| etmt | Hourly transpiration rate by trees (in m h-1) |
| etmg | Hourly transpiration rate by grasses (in m h-1) |
| su_1 | Soil saturation degree in the top soil layer at midnight (dimensionless) |
results_yearly.txt¶
| nyear | Year |
| rain | Annual rainfall (mm/year) |
| par | Photosynthetically active Photon Flux Density (in mol m-2 s-1) |
| srad | Global solar irradiance (in MJ m-2 a-1) |
| vd | Yearly average vapour deficit (in mol mol-1) |
| esoil | Yearly soil evaporation rate (mm/year) |
| etmt | Yearly transpiration rate by trees (in mm/year) |
| etmg | Yearly transpiration rate by grasses (in mm/year) |
| assg | CO2 uptake rate by seasonal vegetation (in mol m-2 a-1) |
| asst | CO2 uptake rate by trees (in mol m-2 a-1) |
| rlg | Leaf respiration rate by seasonal vegetation (in mol m-2 a-1) |
| rrg | Root respiration rate by seasonal vegetation (in mol m-2 a-1) |
| rlt | Leaf respiration rate by perennial vegetation (in mol m-2 a-1) |
| rrt | Root respiration rate by perennial vegetation (in mol m-2 a-1) |
| cpccg | Carbon costs related to water distribution and storage for seasonal vegetation (in mol m-2 a-1) |
| tcg | Carbon costs related to maintenance of gras foliage (in mol m-2 a-1) |
| cpcct | Carbon costs related to water distribution and storage for perennial vegetation (in mol m-2 a-1) |
| tct | Carbon costs related to maintenance of tree foliage (in mol m-2 a-1) |
rsurf_daily.txt¶
The file “rsurf_daily.txt” is an output file from VOM, containing a midnight snapshots of the root surface distributions in the soil profile in ascii format.
As the number of soil layers also depends on given soil depth, this file has a variable number of columns. These columns do not have their own variable names. They are all saved within and behind the last variable name (rsurft_sublayer), e.g.:
| fyear | Year |
| fmonth | Month of the year |
| fday | Day of the month |
| nday | Day of the model |
| rsurft_sublayer | Root surface area density (root surface area per unit soil volume) in each soil layer (in m2 m-3 d-1) |
ruptk_hourly.txt¶
The file “ruptkt_hourly.txt” is an output file from VOM, containing hourly root water uptake rates in each soil layer during the last few years of the model run in ascii format.
As the number of soil layers also depends on input given soil depth, this file has a variably number of rows. These rows don’t have their own variable names. They are all saved within and behind the last variable name (delyusublayer), e.g.:
| fyear | Year |
| fmonth | Month of the year |
| fday | Day of the month |
| nday | Day of the model |
| ruptkt_sublayer | Root water uptake rate in each soil layer (in m h-1) |
su_hourly.txt¶
The file “su_hourly.txt” is an output file from VOM, containing hourly soil saturation degrees in each soil layer during the last few years of the model run in ascii format.
As the number of soil layers also depends on input given soil depth, this file has a variably number of rows. These rows don’t have their own variable names. They are all saved within and behind the last variable name (su_sublayer), e.g.:
| fyear | Year |
| fmonth | Month of the year |
| fday | Day of the month |
| nday | Day of the model |
| su_sublayer | Soil saturation degree in each sublayer (1.0 means fully saturated) |
delz_hourly.txt¶
The file “delz_hourly.txt” is an output file from VOM, containing the thickness of each unsaturated soil layers in ascii format.
As the number of soil layers also depends on the position of the water table, this file has a variable number of rows. These rows do not have their own variable names. They are all saved within and behind the last variable name (delz_sublayer), e.g.:
| fyear | Year |
| fmonth | Month of the year |
| fday | Day of the month |
| nday | Day of the model |
| delz_sublayer | Thickness of each unsaturated soil layer (in m) |