Articles | Volume 22, issue 4
Research article
25 Feb 2022
Research article |  | 25 Feb 2022

Urban inland wintertime N2O5 and ClNO2 influenced by snow-covered ground, air turbulence, and precipitation

Kathryn D. Kulju, Stephen M. McNamara, Qianjie Chen, Hannah S. Kenagy, Jacinta Edebeli, Jose D. Fuentes, Steven B. Bertman, and Kerri A. Pratt

Data sets

N2O5, ClNO2, PM2.5 chloride, and PM2.5 nitrate in Kalamazoo, Michigan, USA during January–February 2018 Kathryn D. Kulju and Kerri A. Pratt

Short summary
N2O5 uptake by chloride-containing surfaces produces ClNO2, which photolyzes, producing NO2 and highly reactive Cl radicals that impact air quality. In the inland urban atmosphere, ClNO2 was elevated during lower air turbulence and over snow-covered ground, from snowpack ClNO2 production. N2O5 and ClNO2 levels were lowest, on average, during rainfall and fog because of scavenging, with N2O5 scavenging by fog droplets likely contributing to observed increased particulate nitrate concentrations.
Final-revised paper