Extended Data Fig. 6: Validation of all-source and fire-sourced O3 against large wildfire events.
From: Global population exposure to landscape fire air pollution from 2000 to 2019
a, Line plots showing the time-series trend of daily all-sourced and fire-sourced O3 concentrations before, during, and after ten large wildfire events. The two vertical solid lines represent the start date and the end date of the wildfire event. The end date of the 2019 Black Summer Bushfires was not the real end date of the bushfire event, but the last date that our model can cover. b, Scatter plots comparing the average daily fire-sourced O3 concentrations (left) and the proportions of fire-sourced O3 among all-source O3 (right) during and before the ten selected large wildfire events. The period before each wildfire event was defined as 60 days before the wildfire event start date.
