Climate change may also have a significant effect on air pollution. Warming and drying of the climate are projected to lead to an increase in extreme fire-danger days in southern and eastern Australia (see CSIRO & BoM 2014; Box ATM3), which will result in an increase in smoke production. Droughts are projected to increase in length and geographical extent, leading to increased water shortages in southern Australia. This could result in an increased incidence of dust events.
Increasing temperatures (see Effects of increased greenhouse gases) are likely to increase biogenic emissions and affect the chemical reactivity of the atmosphere, which would lead to increased formation of ozone and secondary particles. In urban centres, this may manifest as increased smog formation (see Box ATM8).