Box Model Assessments of Biomass Burning Smoke Oxidation and the Interplay Between VOCs, NOx, and NOy.
Abstract
Biomass burning emissions are a significant source of volatile organic compounds (VOCs) and nitrogen oxides (NO + NO2 = NOx), which contribute to tropospheric ozone formation. Ozone enhancements downwind of wildfires are variable, in part due to the chemical complexity of biomass burning emissions and variability in daytime oxidation processes. Here, we present modeling work describing the OH oxidation of biomass burning emissions. We will present mechanism development aimed at including the reactions of understudied VOCs, such as furan and phenolic compounds, to the Master Chemical Mechanism, and compare model output to secondary VOCs measured in ambient and laboratory smoke. We will also present modeling work aimed at understanding the chemical processes contributing to the evolution of NOy (NOx + other oxidized reactive nitrogen) and show the extent to which VOCs measured in biomass burning smoke may act as NOx sinks and reservoirs.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2019
- Bibcode:
- 2019AGUFM.A12D..03C
- Keywords:
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- 0305 Aerosols and particles;
- ATMOSPHERIC COMPOSITION AND STRUCTURE;
- 0322 Constituent sources and sinks;
- ATMOSPHERIC COMPOSITION AND STRUCTURE;
- 0345 Pollution: urban and regional;
- ATMOSPHERIC COMPOSITION AND STRUCTURE;
- 0365 Troposphere: composition and chemistry;
- ATMOSPHERIC COMPOSITION AND STRUCTURE