申論題

1. Atmospheric ozone plays different roles based on the location, as shown in Figure 1-1. Howev ver, the formation of ozone at the stratosphere and troposphere is very different.

c) (12 pts) In the troposphere, ozone can be transported from stratosphere but is mainly produced by chemical reactions. Figure 1-2 shows the cyeling of HOx and O₃; production in a polluted atmosphere. Please describe in detail how the ozone is formed in the troposphere (you can use CO or CH₄ as an example to illustrate the processes).