Site Parameters for External Nutrient Input

Parameter Description Units Valid Values Default Values
EPNFA(1) Intercept value for determining the effect of annual precipitation on atmospheric N fixation (wet and dry deposition). This is the minimum annual amount. g N m-2 year-1 0.0 to 9999.0  
EPNFA(2) Positive slope for determining the effect of annual precipitation on atmospheric N fixation (wet and dry deposition). Atmospheric N inputs are a linear function of annual precipitation The slope is the rate of N fixation per cm of precipitation. g N m-2 year-1 cm-1 precip. 0.0 to 1.0  
EPNFS(1) Intercept value for determining the effect of annual precipitation on non-symbiotic soil N fixation. g N m-2 year-1 -1.0 to 1.0 -0.9
EPNFS(2) Slope value for determining the effect of annual precipitation on non-symbiotic soil N fixation. g N m-2 year-1 cm-1 precip. 0.0 to 1.0 0.015
SATMOS(1) Intercept for atmospheric S inputs as a linear function of annual precipitation. g S m-2 year-1 0.0 to 9999.0  
SATMOS(2) Slope for atmospheric S inputs as a linear function of annual precipitation. Atmospheric S inputs are a linear function of annual precipitation g S m-2 year-1 cm-1 precip. 0.0 to 1.0  
SIRRI S concentration in irrigation water. mg l-1 0.0 to 1000.0  

See Also

Site Parameters
Model Parameters
About the Model Internal Parameterization