Negative Impacts of Tropospheric Ozone
“With increasing populations, more automobiles, and more industry, there’s more ozone in the lower atmosphere. Since 1900 the amount of ozone near the earth’s surface has more than doubled.
…Tropospheric ozone is formed by the interaction of sunlight, particularly ultraviolet light, with hydrocarbons and nitrogen oxides, which are emitted by automobiles, gasoline vapors, fossil fuel power plants, refineries, and certain other industries.
While stratospheric ozone shields us from ultraviolet radiation, in the troposphere this irritating, reactive molecule damages forests and crops; destroys nylon, rubber, and other materials; and injures or destroys living tissue. It is a particular threat to people who exercise outdoors or who already have respiratory problems.
Ozone affects plants in several ways. High concentrations of ozone cause plants to close their stomata. These are the cells on the underside of the plant that allow carbon dioxide and water to diffuse into the plant tissue. This slows down photosynthesis and plant growth. Ozone may also enter the plants through the stomata and directly damage internal cells.”
Thank goodness we live in Hartland, Devon. The ozone from New York City has to travel all the way across the Atlantic. It may do so, but I cannot smell it!