Ground-level ozone is an air pollutant that is harmful to human health and which
generally increases with rising temperatures. The map shows projected
changes in average annualground level
ozone pollution concentration in 2050 as compared to 2001, using a mid-range emissions scenario (A1B, which assumes gradual
reductions from current emissions trends beginning around mid-century). (Figure source: adapted from Tagaris et al.
2009c275ae44-75e4-4974-81ea-fe7119474ffb).