DAYCENT Biogeochemical Process Model

This model simulates fluxes of C and N among the atmosphere, vegetation, and soil.

• Model inputs are: daily maximum/minimum air temperature and precipitation, surface soil texture class, and land cover/use data (e.g., vegetation type, cultivation/planting schedules, amount and timing of nutrient amendments).
• Model outputs include: daily N-gas flux (N2O, NOx, N2), CO2 flux from heterotrophic soil respiration, soil organic C and N, NPP, H2O and NO3 leaching, and other ecosystem parameters.

Data from DAYCENT were used in the case study, Ranchers in Marin County Consider Carbon Credits.