Global population exposure to landscape fire air pollution from 2000 to 2019

Abstract Wildfires are thought to be increasing in severity and frequency as a result of climate change 1–5 . Air pollution from landscape fires can negatively affect human health 4–6 , but human exposure to landscape fire-sourced (LFS) air pollution has not been well characterized at the global scale 7–23 . Here, we estimate global daily LFS outdoor fine particulate matter (PM 2.5 ) and surface ozone concentrations at 0.25° × 0.25° resolution during the period 2000–2019 with the help of machine learning and chemical transport models. We found that overall population-weighted average LFS PM 2.5 and ozone concentrations were 2.5 µg m −3 (6.1% of all-source PM 2.5 ) and 3.2 µg m −3 (3.6% of all-source ozone),…

• S
  Sanofi
• CS
  China Scholarship Council

  Awards: GNT1163693, 201906210065, 202006010044, GNT2008813, GNT2009866, 201906320051
• MR
  Medical Research Council
• NH
  National Health and Medical Research Council

  Awards: GNT2009866, 201906320051, GNT2008813, GNT1163693, GNT2000581, 201906210065