Can we achieve atmospheric chemical environments in the laboratory? An integrated model-measurement approach to chamber SOA studies
Name
sciadv.ado1482.pdf
Description
Published version
Size
13.66 MB
Format
Adobe PDF
Checksum (MD5)
69e0ba3e211ac706cf906c336af8ca0f
Author(s)
Kenagy, Hannah S
Heald, Colette L
Tahsini, Nadia
Goss, Matthew B
Kroll, Jesse H
Date Issued
September 13, 2024
Journal
Science Advances
Publisher
American Association for the Advancement of Science
Citation
Kenagy, Hannah S, Heald, Colette L, Tahsini, Nadia, Goss, Matthew B and Kroll, Jesse H. 2024. "Can we achieve atmospheric chemical environments in the laboratory? An integrated model-measurement approach to chamber SOA studies." Science Advances, 10 (37).
Version
Final published version
Abstract
Secondary organic aerosol (SOA), atmospheric particulate matter formed from low-volatility products of volatile organic compound (VOC) oxidation, affects both air quality and climate. Current 3D models, however, cannot reproduce the observed variability in atmospheric organic aerosol. Because many SOA model descriptions are derived from environmental chamber experiments, our ability to represent atmospheric conditions in chambers directly affects our ability to assess the air quality and climate impacts of SOA. Here, we develop an approach that leverages global modeling and detailed mechanisms to design chamber experiments that mimic the atmospheric chemistry of organic peroxy radicals (RO2), a key intermediate in VOC oxidation. Drawing on decades of laboratory experiments, we develop a framework for quantitatively describing RO2 chemistry and show that no previous experimental approaches to studying SOA formation have accessed the relevant atmospheric RO2 fate distribution. We show proof-of-concept experiments that demonstrate how SOA experiments can access a range of atmospheric chemical environments and propose several directions for future studies.
MIT Department
Massachusetts Institute of Technology. Department of Civil and Environmental Engineering
Massachusetts Institute of Technology. Department of Chemical Engineering
Terms of Use
Creative Commons Attribution-Noncommercial
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1126/sciadv.ado1482
