Abstract
The Northern Wasatch Front area is one of ~ 50 metropolitan regions in the U.S. that do not meet the 2015 O3 standard. To better understand the causes of high O3 days in this region we conducted the Salt Lake regional Smoke, Ozone and Aerosol Study (SAMOZA) in the summer of 2022. The primary goals of SAMOZA were: Measure a suite of VOCs, by Proton Transfer Reaction Mass Spectrometry (PTR-MS) and the 2,4-dinitrophenylhydrazine (DNPH) cartridge method. Evaluate whether the standard UV O3 measurements made in SLC show a positive bias during smoke events, as has been suggested in some recent studies. Use the observations to conduct photochemical modeling and statistical/machine learning analyses to understand photochemistry on both smoke-influenced and non-smoke days. Implications: The Northern Wasatch Front area is one of ~50 metropolitan regions in the U.S. that do not meet the 2015 O3 standard. To better understand the causes of high O3 days in this region we conducted the Salt Lake regional Smoke, Ozone and Aerosol Study (SAMOZA) in the summer of 2022. A number of policy relevant findings are identified in the manuscript including role of smoke and NOx vs VOC sensitivity.
| Original language | English |
|---|---|
| Pages (from-to) | 163-180 |
| Number of pages | 18 |
| Journal | Journal of the Air and Waste Management Association |
| Volume | 74 |
| Issue number | 3 |
| DOIs | |
| State | Published - 2024 |
Funding
Rio Tinto Kennecott Utah Copper, LLC.Tesoro Refining and Marketing Co. Holly Frontier Woods Cross Refining LLC. Big West Oil LLC. Chevron USA Inc. The University of Washington group was also supported on this work by a grant from the National Oceanic and Atmospheric Administration (NOAA, #NA22OAR4310203) The work was supported by the Climate Program Office [NA22OAR4310203] and the Utah Division of Air Quality. SAMOZA was funded by the Utah Division of Air Quality through a Science for Solutions grant. We want to thank all UDAQ personnel for their assistance during the experiment. We would also like to thank Dr. Bob Yokelson at University of Montana for loan of the Model 211 TwoB Inc O3 analyzer. We further acknowledge financial support from several industry partners including: Rio Tinto Kennecott Utah Copper, LLC.Tesoro Refining and Marketing Co. Holly Frontier Woods Cross Refining LLC. Big West Oil LLC. Chevron USA Inc. The University of Washington group was also supported on this work by a grant from the National Oceanic and Atmospheric Administration (NOAA, #NA22OAR4310203) The Utah Division of Air Quality had input on the project plan and reviewed a preliminary version of the final project report. The industry funders had no input on the experimental design, the final project report or any of the results presented in this manuscript. SAMOZA was funded by the Utah Division of Air Quality through a Science for Solutions grant. We want to thank all UDAQ personnel for their assistance during the experiment. We would also like to thank Dr. Bob Yokelson at University of Montana for loan of the Model 211 TwoB Inc O analyzer. We further acknowledge financial support from several industry partners including: 3
| Funders | Funder number |
|---|---|
| National Oceanic and Atmospheric Administration | 22OAR4310203 |
| NA22OAR4310203 |
Keywords
- Ozone/analysis
- Smoke/analysis
- Air Pollutants/analysis
- Lakes/analysis
- Environmental Monitoring/methods
- Volatile Organic Compounds/analysis
- Aerosols/analysis
- China