气候变化领域集成服务门户(CCPortal): Impact of the 2016 Southeastern US Wildfires on the Vertical Distribution of Ozone and Aerosol at Huntsville, Alabama

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DOI	10.1029/2021JD034796
	Impact of the 2016 Southeastern US Wildfires on the Vertical Distribution of Ozone and Aerosol at Huntsville, Alabama
	Wang B.; Kuang S.; Pfister G.G.; Pour-Biazar A.; Buchholz R.R.; Langford A.O.; Newchurch M.J.
发表日期	2021
ISSN	2169897X
卷号	126 期号:9
英文摘要	We present an integrated analysis of measurements from ozonesonde, ozone (O3) Differential Absorption Lidar (DIAL), ceilometer, surface monitors, and space-borne observations in conjunction with the regional chemical transport model Weather Research and Forecast Model with Chemistry (WRF-Chem) to investigate the effect of biomass burning emissions on the vertical distribution of ozone and aerosols during an episode of the 2016 Southeastern United States wildfires. The ceilometer and DIAL measurements capture the vertical extent of the smoke plumes affecting the surface and upper air over Huntsville, AL. The model evaluation results suggest a scaling factor of 3–4 for the wildfire aerosol emissions in order to better match observed aerosol optical depth, fine particulate matter (PM2.5), and DIAL aerosol extinction. We use the scaled emissions together with WRF-Chem tendency diagnostics to quantify the fire impacts and characterize the processes affecting the vertical ozone budget downstream of the wildfires. During the daytime at Huntsville on November 12 and 13, we estimate that fire emissions contribute 12–32 μg/m3 (44%–70%) to hourly surface PM2.5 and 7–8 ppb/10 h (30%–37%) to the surface ozone increase (ΔO3), respectively. Net chemical ozone production (PO3) is the main contributor to upper-air ozone, which reaches 17–19 ppb/10 h with an estimated 14%–25% contribution from fire sources. Vertical mixing and advection are the major drivers of changes in surface ozone. Model analysis indicates that advection dominates ΔO3 due to fire emissions below 1 km on November 12, while local photochemistry dominates on November 13. These results quantify the different mechanisms through which fires can influence the vertical ozone budget and point out uncertainties in fire inventories that need to be addressed in light of the increasing role of wildfires on air quality. © 2021. American Geophysical Union. All Rights Reserved.
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185260
作者单位	Department of Earth and Environment, Boston University, Boston, MA, United States; Department of Atmospheric and Earth Science, University of Alabama in Huntsville, Huntsville, AL, United States; Earth System Science Center, University of Alabama in Huntsville, Huntsville, AL, United States; Atmospheric Chemistry Observations and Modeling Laboratory, NCAR, Boulder, CO, United States; Chemical Sciences Laboratory, NOAA Earth System Research Laboratories, Boulder, CO, United States
推荐引用方式 GB/T 7714	Wang B.,Kuang S.,Pfister G.G.,et al. Impact of the 2016 Southeastern US Wildfires on the Vertical Distribution of Ozone and Aerosol at Huntsville, Alabama[J],2021,126(9).
APA	Wang B..,Kuang S..,Pfister G.G..,Pour-Biazar A..,Buchholz R.R..,...&Newchurch M.J..(2021).Impact of the 2016 Southeastern US Wildfires on the Vertical Distribution of Ozone and Aerosol at Huntsville, Alabama.Journal of Geophysical Research: Atmospheres,126(9).
MLA	Wang B.,et al."Impact of the 2016 Southeastern US Wildfires on the Vertical Distribution of Ozone and Aerosol at Huntsville, Alabama".Journal of Geophysical Research: Atmospheres 126.9(2021).