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. Author manuscript; available in PMC: 2019 Aug 8.
Published in final edited form as: Atmos Environ (1994). 2017 Jul 1;160:36–45. doi: 10.1016/j.atmosenv.2017.04.009

Figure 5:

Figure 5:

Map of differences in the ratio of NH4+/H+ soil concentrations (i.e. the emission potential) at a soil depth of 1 cm calculated in the CMAQ bidirectional NH3 land-surface exchange model on a) March 5, b) March 15, c) March 25, d) April 1, e) April 11, and f) April 21, i.e. 10 days, 20 days, 30 days 40 days, 50 days, and 60 days after initialization for the spring case (February 23). The difference was calculated by subtracting the emission potential for the SPRING_PROF case initialized on February 23 from the emission potential for the BASE case initialized on December 21.