Fig. 2
Daily median fire-specific surface-level PM2.5 concentration (μg/m3) at active camera traps during the eastern Washington fire season. Forecasts were generated by the High-Resolution Rapid Refresh Smoke (HRRR-Smoke) chemical transport model, which uses satellite detection of fire radiative power to simulate PM2.5 from fires at a 3-km radius. Twice-daily forecasts were averaged to arrive at a daily mean concentration of fire-specific PM2.5 at each camera trap location. The median of the daily mean PM2.5 value at each camera trap is presented here. For reference, we included the PM2.5 threshold considered unhealthy by public health standards (red line, 55.5 μg/m3). Note that our study area is primarily rural and not highly developed; as such, sources of PM2.5 other than smoke are negligible. Figure designed using ggplot2 (Wickham 2016)