Breezometer

DECEMBER 7, 2021

Our ozone layer serves as a lifesaving UV barrier for planet earth, functioning to absorb most of the sun’s ultraviolet radiation. The protective ozone layer which exists in the upper atmosphere is vital to life on earth. At the same time, ground-level ozone pollution is extremely harmful to human health. How is Ozone Created?

Ozone 98

Ozone Ground-Level Ozone Radiation Nitrogen Oxides 98

Union of Concerned Scientists

MAY 21, 2025

are formed indirectly in the atmosphere from other toxic pollutants also emitted from tailpipes. Medium and large trucks, which make up just 1 in 10 vehicles on our roads, contribute disproportionately to 58 percent of the ozone-forming nitrogen oxides and 52 percent of PM 2.5 Secondary PM 2.5 According to the report, 125.2

130

130

Union of Concerned Scientists

SEPTEMBER 26, 2024

Examples are benzene, hydrofluoric acid, particulate matter, sulfur dioxide, nitrogen oxides, and many, many other toxic pollutants. It has been estimated that globally oil processing is responsible for about 15 percent of all VOCs released into the atmosphere. which is formed in the atmosphere from precursor gases such as NOx.

Ground-Level Ozone 323

Ground-Level Ozone Fossil Fuels Ozone Air Pollution 323