Ozone occurs in two regions of Earth’s atmosphere – at ground level and in the upper atmosphere. Ground-level ozone is a gas formed by chemical reactions involving sunlight, volatile organic compounds, and nitrogen oxides (the main source being vehicle emissions). It is linked to increased health risks, such as respiratory and cardiovascular diseases.
Given the time required for the chemical reactions that form ozone to take place, high concentrations of it occur well away and downwind from where the pollutants are initially emitted.
Column headings:
- Con_mcg_m3 = Concentration in micrograms per cubic metre (μg/m3)
This dataset relates to the "Ground-level ozone concentrations" measure on the Environmental Indicators, Te taiao Aotearoa website.
