Skip to main content
. Author manuscript; available in PMC: 2018 Apr 19.
Published in final edited form as: Atmos Chem Phys. 2017;17:12449–12474. doi: 10.5194/acp-17-12449-2017

Figure 12.

Figure 12

Differences in simulated O3 distributions using the RACM2 and CB05TU gas-phase chemical mechanisms in the hemispheric CMAQ model. (a) Mean difference (RACM2 minus CB05TU) in monthly mean surface-level O3 (in ppb) for August 2006. Comparisons of mean (for August 2006) O3 mixing ratio vertical profiles simulated with the CB05TU and RACM2 mechanisms with ozonesonde measurements at (b) Sable Island, Nova Scotia, (c) Trinidad Head, California, and (d) Hilo, Hawaii. RACM2_HAL is from a simulation in which the RACM2 mechanism was augmented with halogen chemistry (described in section 2.4.2).