Fuel-Type Independent Parameterization of Volatile Organic Compound Emissions from Western US Wildfires.

ABSTRACT: Volatile organic compounds (VOCs) emitted from biomass burning impact air quality and climate. Laboratory studies have shown that the variability in VOC speciation is largely driven by changes in combustion conditions and is only modestly impacted by fuel type. Here, we report that emissions of VOCs measured in ambient smoke emitted from western US wildfires can be parameterized by high- and low-temperature pyrolysis VOC profiles and are consistent with previous observations from laboratory simulated fires. This is demonstrated using positive matrix factorization (PMF) constrained by high- and low-temperature factors using VOC measurements obtained with a proton-transfer reaction time-of-flight mass spectrometer (PTR-ToF-MS) on board the NASA DC-8 during the FIREX-AQ (Fire Influence on Reg

SUBMITTER: Sekimoto K 

PROVIDER: S-EPMC10483695 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature