Volumetric anaerobic soil fraction

The volumetric anaerobic fraction of the soil is calculated as:

                                                           (6.99)

where gaporshape is a shape parameter and Ovolcons is the volumetric oxygen concentration calculated as:

                                                    (6.100)

where OO2Conc is the oxygen concentration, oratioair is the ratio of oxygen to air and ρa(T) is the air density temperature function. See viewing function Anaerobic volumetric fraction.