Nighttime Chemical Transformation in Biomass Burning Plumes: A Box Model Analysis Initialized with Aircraft Observations

被引：80

作者：

Decker, Zachary C. J. ^{[1
,2
,3
]}

Zarzana, Kyle J. ^{[1
,2
,3
]}

Coggon, Matthew ^{[1
,3
]}

Min, Kyung-Eun ^{[1
,3
,7
]}

Pollack, Ilana ^{[1
,8
]}

Ryerson, Thomas B. ^{[3
]}

Peischl, Jeff ^{[1
,3
]}

Edwards, Pete ^{[4
]}

Dube, William P. ^{[1
,3
]}

Markovic, Milos Z. ^{[1
,9
]}

Roberts, James M. ^{[1
,3
]}

Veres, Patrick R. ^{[3
]}

Graus, Martin ^{[1
,10
]}

Warneke, Carsten ^{[1
,3
]}

de Gouw, Joost ^{[1
,2
]}

Hatch, Lindsay E. ^{[5
,6
]}

Barsanti, Kelley C. ^{[5
,6
]}

Brown, Steven S. ^{[2
,3
]}

机构：

[1] Univ Colorado, Cooperat Inst Res Environm Sci, Boulder, CO 80309 USA

[2] Univ Colorado, Dept Chem, Boulder, CO 80309 USA

[3] NOAA, ESRL, Div Chem Sci, Boulder, CO 80305 USA

[4] Univ York, Dept Chem, Wolfson Atmospher Chem Labs, York YO10 5DD, N Yorkshire, England

[5] Univ Calif Riverside, Dept Chem & Environm Engn, Riverside, CA 92507 USA

[6] Univ Calif Riverside, CE, CERT, Riverside, CA 92507 USA

[7] Gwangju Inst Sci & Technol, Sch Earth Sci & Environm Engn, Gwangju 61005, South Korea

[8] Colorado State Univ, Dept Atmospher Sci, Ft Collins, CO 80523 USA

[9] Picarro Inc, Santa Clara, CA 95054 USA

[10] Univ Innsbruck, Dept Atmospher & Cryospher Sci, A-6020 Innsbruck, Austria

来源：

ENVIRONMENTAL SCIENCE & TECHNOLOGY | 2019年 / 53卷 / 05期

关键词：

GAS-PHASE REACTIONS; ORGANIC AEROSOL FORMATION; BROWN CARBON; TROPOSPHERIC DEGRADATION; ATMOSPHERIC DEGRADATION; REACTIVE NITROGEN; RATE COEFFICIENTS; LIGHT-ABSORPTION; NITRATED PHENOLS; CROP RESIDUE;

D O I：

10.1021/acs.est.8b05359

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Biomass burning (BB) is a large source of reactive compounds in the atmosphere. While the daytime photochemistry of BB emissions has been studied in some detail, there has been little focus on nighttime reactions despite the potential for substantial oxidative and heterogeneous chemistry. Here, we present the first analysis of nighttime aircraft intercepts of agricultural BB plumes using observations from the NOAA WP-3D aircraft during the 2013 Southeast Nexus (SENEX) campaign. We use these observations in conjunction with detailed chemical box modeling to investigate the formation and fate of oxidants (NO3, N2O5, O-3, and OH) and BB volatile organic compounds (BBVOCs), using emissions representative of agricultural burns (rice straw) and western wildfires (ponderosa pine). Field observations suggest NO3 production was approximately 1 ppbv while NO3 and N2O5 were at or below 3 pptv, indicating rapid NO3/N2O5 reactivity. Model analysis shows that >99% of NO3/ N2O5 loss is due to BBVOC + NO3 reactions rather than aerosol uptake of N2O5. Nighttime BBVOC oxidation for rice straw and ponderosa pine fires is dominated by NO3 (72, 53%, respectively) but O-3 oxidation is significant (25, 43%), leading to roughly 5S% overnight depletion of the most reactive BBVOCs and NO2.

引用

页码：2529 / 2538

页数：10