Environmental modelling (domain_administrator)

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x Century  
Century models litter and soil organic matter, C, N, P, and S dynamics through an annual cycle over time scales of centuries and millennia.
x TRIFFID Model diagram for the TRIFFID model in Simile
TRIFFID updates plant distribution depending on the CO2 fluxes at the land-atmosphere interface.
x Soil evaporation rate    
x Precipitation intercepted by canopy    
x Albedo for short-wave radiation    
x Albedo for long-wave radiation    
x CO2 assimilation rate at light saturation for individual leaves    
x Potential CO2 assimilation rate at light saturation for individual leaves    
x Assimilation CH20 requirement for dry matter production    
x Assimilate requirement for dry matter production    
x Assimilate requirement for leaf dry matter production    
x Assimilate requirement for root dry matter production    
x Assimilate requirement for storage organ dry matter production    
x Assimilate requirement for stem dry matter production    
x Atmospheric transmission coefficient    
x Total transpiration rate of canopy    
x Actual vapour pressure    
x Black-body radiation    
x Stefan-Boltzmann constant  
The Stefan–Boltzmann constant (also Stefan's constant), a physical constant denoted by the Greek letter σ, is the constant of proportionality in the Stefan–Boltzmann law: the total energy radiated per unit surface area of a black body in unit time...
x Mass fraction carbon in leaves    
x Mass fraction carbon in roots    
x Mass fraction carbon in storage organs    
x Mass fraction carbon in stems    
x Amount of carbon in crop    
x Sum of integrated carbon fluxes into and out of crop    
x Conversion factor for remobilisation of stem carbohydrates into glucose    
x LPJ LPJ logo
The following description is taken from this source.The Lund-Potsdam-Jena Dynamic Global Vegetation Model (LPJ) combines process-based, large-scale representations of terrestrial vegetation dynamics and land-atmosphere carbon and water exchanges...
x CO2 production factor for growth of leaves    
x CO2 production factor for growth of roots    
x CO2 production factor for growth of storage organs    
x CO2 production factor for growth of stems    
x Coefficient for effect of water stress on dry matter partitioning    
x Daily average temperature    
x Declination of the sun    
x Death rate of leaf area    
x Death rate of leaves    
x Day number for crop emergence    
x Photosynthetically active radiation Par action spectrum
Photosynthetically active radiation, often abbreviated PAR, designates the spectral range (wave band) of solar radiation from 400 to 700 nanometers that photosynthetic organisms are able to use in the process of photosynthesis. This spectral region...
x Drainage rate below the root zone    
x Drying power term in Penman equation    
x Daily extra-terrestrial radiation    
x Number of days since last rain    
x Daily effective temperature    
x Daily total gross CO2 assimilation of the crop    
x Gross CO2 assimilation rate    
x Daily maximum temperature    
x Daily minimum temperature    
x Daily solar radiation    
x Development stage of crop    
x Ear area index    
x Ear area/weight ratio    
x Soil-specific extinction coefficient    
x Initial light conversion factor for individual leaves    
x Cumulative effective root length    
x Potential soil evaporation due to drying power of the air    
x Potential soil evaporation due to radiation    
x Evaporation rate on days without rain    
x Evaporation rate on days with rain    
x Evaporation rate    
x Rate of root elongation    
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