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FIG. 10. (A) Chlorofluorocarbon and SF6 concentrations measured in July 2002 at the Southern High Plains irrigated cotton site JRW compared with simulated profiles for porosity, moisture content, and tortuosity data shown in Table 2; and (B) comparison of simulated to measured N2O concentrations for root-zone production of 0.074 kg N2O-N ha–1 yr–1 and water table production of 0.009 kg N2O-N ha–1 yr–1. X is a single measurement of groundwater (GW) equivalent equilibrium concentration in water-vapor-saturated air.
