Qiaoyun Peng, Brett B Palm, Kira E Melander, Ben H Lee, Samuel R Hall, Kirk Ullmann, Teresa Campos, Andrew Weinheimer, Eric Apel, Rebecca S Hornbrook, Alan J Hills, Denise D Montzka, Frank M Flocke, Lu Hu, Wade Permar, Catherine Wielgasz, Jakob Lindaas, Ilana B Pollack, Emily V Fischer, Timothy H Bertram, Joel A Thornton
Wildfires are an important source of nitrous acid (HONO), a photo-labile radical precursor, yet in situ measurements and quantification of primary HONO emissions from open wildfires have been scarce. We present airborne observations of HONO within wildfire plumes sampled during the Western Wildfire Experiment for Cloud chemistry, Aerosol absorption and Nitrogen (WE-CAN) campaign. ΔHONO/ΔCO close to the fire locations ranged from 0.7 - 17 pptv ppbv-1 using a maximum enhancement method, with the median similar to previous observations of temperate forest fire plumes...
April 15, 2020: Environmental Science & Technology