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The effect of acyclic terpene emissions on secondary organic aerosol properties


EMSL Project ID
51870

Abstract

Acyclic terpenes are commonly emitted by plants, and have frequently been linked to plant stress volatile emissions. These compounds are more reactive than the more commonly studied cyclic terpenes due to the presence of additional double bonds. However, their contribution to atmospheric chemistry processes, including secondary organic aerosol (SOA) formation and properties, have not been studied previously. This proposed work will conduct laboratory SOA generation and particle evaporation experiments that compare and contrast cyclic and acyclic terpene SOA chemistry. The study will target three aims. First, to measure particle evaporation kinetics and particle properties of acyclic and cyclic monoterpene and sesquiterpene SOA generated. Second, to investigate changes in particle properties with continued atmospheric aging including its effects on particle density, shape, viscosity, and volatility. Third, integrate laboratory results with a regional chemical transport model (Weather Research Forecasting model, WRF-Chem) to evaluate the effect of acyclic terpenes on SOA formation and properties in the Amazon. This study will provide the first comprehensive investigation of SOA chemistry from acyclic terpene oxidation, and will be the first to evaluate the effects of plant stress volatile emissions using a regional chemical transport model.

Project Details

Project type
Large-Scale EMSL Research
Start Date
2021-10-01
End Date
2023-12-30
Status
Closed

Team

Principal Investigator

Celia Faiola
Institution
University of California, Irvine

Co-Investigator(s)

ManishKumar Shrivastava
Institution
Pacific Northwest National Laboratory

Sergey Nizkorodov
Institution
University of California, Irvine

Team Members

Claire Moffett
Institution
Pacific Northwest National Laboratory

Sijia Liu
Institution
University of California, Irvine

Jie Zhang
Institution
Pacific Northwest National Laboratory

Natalie Smith
Institution
University of California, Irvine