Fig. 3: Average (during 2001 to 2020) PM2.5 increase attributed to wildfires in Arctic Council states.
From: Large transboundary health impact of Arctic wildfire smoke

a showing the percentage of PM2.5 attributed to Arctic wildfires and (b) showing the absolute concentration of wildfire-sourced PM2.5. In both panels data is only shown where there is a significant increase in PM2.5 attributed to Arctic Council wildfires.