Wildfire-driven changes in the abundance of gas-phase pollutants in the city of Boise, ID during summer 2018

被引：7

作者：

Lill, Emily ^{[1
]}

Lindaas, Jakob ^{[1
]}

Calahorrano, Julieta F. Juncosa ^{[1
]}

Campos, Teresa ^{[2
]}

Flocke, Frank ^{[2
]}

Apel, Eric C. ^{[2
]}

Hornbrook, Rebecca S. ^{[2
]}

Hills, Alan ^{[2
]}

Jarnot, Alex ^{[3
]}

Blake, Nicola ^{[3
]}

Permar, Wade ^{[4
]}

Hu, Lu ^{[4
]}

Weinheimer, Andrew ^{[2
]}

Tyndall, Geoff ^{[2
]}

Montzka, Denise D. E. ^{[2
]}

Hall, Samuel R. ^{[2
]}

Ullmann, Kirk ^{[2
]}

Thornton, Joel ^{[5
]}

Palm, Brett B. ^{[2
,5
]}

Peng, Qiaoyun ^{[5
]}

Pollack, Ilana ^{[1
]}

Fischer, Emily, V ^{[1
]}

机构：

[1] Colorado State Univ, Dept Atmospher Sci, 3915 Laporte Ave, Ft Collins, CO 80521 USA

[2] Natl Ctr Atmospher Res, Atmospher Chem Observat & Modeling Lab, POB 3000, Boulder, CO 80307 USA

[3] Univ Calif Irvine, Dept Chem, Irvine, CA 92717 USA

[4] Univ Montana, Dept Chem & Biochem, Missoula, MT 59812 USA

[5] Univ Washington, Dept Atmospher Sci, Seattle, WA 98195 USA

来源：

ATMOSPHERIC POLLUTION RESEARCH | 2022年 / 13卷 / 01期

基金：

美国国家科学基金会;

关键词：

Wildfire; Emissions; Air quality; VOC; AIR-QUALITY; WESTERN US; HIGH-SENSITIVITY; ORGANIC AEROSOL; CLIMATE-CHANGE; UNITED-STATES; EMISSIONS; OZONE; SMOKE; IMPACTS;

D O I：

10.1016/j.apr.2021.101269

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

During summer 2018, wildfire smoke impacted the atmospheric composition and photochemistry across much of the western U.S. Smoke is becoming an increasingly important source of air pollution for this region, and this problem will continue to be exacerbated by climate change. The Western Wildfire Experiment for Cloud Chemistry, Aerosol Absorption and Nitrogen (WE-CAN) project deployed a research aircraft in summer 2018 (22 July - 31 August) to sample wildfire smoke during its first day of atmospheric evolution using Boise, ID as a base. We report on measurements of gas-phase species collected in aircraft ascents and descents through the boundary layer. We classify ascents and descents with mean hydrogen cyanide (HCN) > 300 pptv and acetonitrile (CH3CN) > 200 pptv as smoke-impacted. We contrast data from the 16 low/no-smoke and 16 smoke-impacted ascents and descents to determine differences between the two data subsets. The smoke was transported from local fires in Idaho as well as from major fire complexes in Oregon and California. During the smoke-impacted periods, the abundances of many gas-phase species, including carbon monoxide (CO), ozone (O3), formaldehyde (HCHO), and peroxyacetyl nitrate (PAN) were significantly higher than low/no-smoke periods. When compared to ground-based data obtained from the Colorado Front Range in summer 2015, we found that a similar subset of gas-phase species increased when both areas were smoke-impacted. During smoke-impacted periods, the average abundances of several Hazardous Air Pollutants (HAPs), including benzene, HCHO, and acetaldehyde, were comparable in magnitude to the annual averages in many major U.S. urban areas.

引用

页数：10