### Wood Smoke Measured with Purple Air (PM.2.5)

Wood smoke is now recognized as the dominant source of wintertime PM2.5 in many urban areas. Consequently, it is important to ensure calibrations are accurate and to measure in locations that cover the expected range of PM2.5 pollution, so that information is available on spatial variation and to provide accurate estimates of population exposure. An added advantage of the PA system is that real time data can be displayed on maps that are freely available on the Internet and downloaded for further analysis.
This system is now a popular choice with thousands of units installed worldwide, so it is important to have validated calibration equations for common pollutants such as wood smoke.
Further information can be found at https://www.mdpi.com/2073-4433/11/8/856/htm