Figure 5: Comparison of our model output after 30 days with that of the Babbin model.
From: Nitrous oxide as a function of oxygen and archaeal gene abundance in the North Pacific
(a) Concentration profiles for O2 and (b) for N2O. In b, N2O is either produced according to B15 from Babbin et al.5 or according to two parameterizations of equation (7), using either M2 or M5 (Table 2). In M2, we ascribe the majority of N2O production (pN2Ototal) to a 1:1 coupling, whereas, with M5, we assume that all of the N2O comes from a random mixing of 14N and 15N labelled NO (pN2Ototal′); note the better fit to the data with M2. (c) N2O production sources according to either a single response to oxygen, equation (7), parameterized with M2, or according to B15; where the two sources of nitrification and denitrification are B15 Nit and B15 Den, respectively. Initial conditions in both models were set using the mean profile from all of our observations but we show the output against all the data here to illustrate the goodness of fit of our simpler model. Drawn in SigmaPlot (Systat Software, San Jose, CA, USA).
