气候变化领域集成服务门户(CCPortal): Chemical Tomography in a Fresh Wildland Fire Plume: A Large Eddy Simulation (LES) Study

CCPortal

DOI	10.1029/2021JD035203
	Chemical Tomography in a Fresh Wildland Fire Plume: A Large Eddy Simulation (LES) Study
	Wang S.; Coggon M.M.; Gkatzelis G.I.; Warneke C.; Bourgeois I.; Ryerson T.; Peischl J.; Veres P.R.; Neuman J.A.; Hair J.; Shingler T.; Fenn M.; Diskin G.; Huey L.G.; Lee Y.R.; Apel E.C.; Hornbrook R.S.; Hills A.J.; Hall S.R.; Ullmann K.; Bela M.M.; Trainer M.K.; Kumar R.; Orlando J.J.; Flocke F.M.; Emmons L.K.
发表日期	2021
ISSN	2169-897X
卷号	126 期号:18
英文摘要	Wildland fires involve complicated processes that are challenging to represent in chemical transport models. Recent airborne measurements reveal remarkable chemical tomography in fresh wildland fire plumes, which remain yet to be fully explored using models. Here, we present a high-resolution large eddy simulation model coupled to chemistry to study the chemical evolution in fresh wildland fire plume. The model is configured for a large fire heavily sampled during the Fire Influence on Regional to Global Environments and Air Quality field campaign, and a variety of airborne measurements are used to evaluate the chemical heterogeneity revealed by the model. We show that the model captures the observed cross-transect variations of a number of compounds quite well, including ozone (O3), nitrous acid (HONO), and peroxyacetyl nitrate. The combined observational and modeling results suggest that the top and edges of fresh plume drive the photochemistry, while dark chemistry is also present but in the lower part of the plume. The model spatial resolution is shown to be very important as it may shift the chemical regime, leading to biases in O3 and NOx chemistry. Based on findings in this work, we speculate that the impact of small fires on air quality may be largely underestimated in models with coarse spatial resolutions. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	airborne measurements; biomass burning; large eddy simulation; nitrous acid; ozone; peroxyacetyl nitrate; wildland fire
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/237007
作者单位	Cooperative Institute for Research in Environmental Sciences (CIRES), University of Colorado, Boulder, CO, United States; National Oceanic and Atmospheric Administration (NOAA), Chemical Sciences Laboratory (CSL), Boulder, CO, United States; National Center for Atmospheric Research (NCAR), Atmospheric Chemistry Observations and Modeling Laboratory (ACOM), Boulder, CO, United States; Now at Institute of Energy and Climate Research, IEK-8: Troposphere, Forschungszentrum Jülich GmbH, Jülich, Germany; National Aeronautics and Space Administration, Langley Research Center, Hampton, VA, United States; Science Systems and Applications, Inc., Hampton, VA, United States; School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA, United States; National Center for Atmospheric Research (NCAR), Research Applications Laboratory (RAL), Boulder, CO, United States
推荐引用方式 GB/T 7714	Wang S.,Coggon M.M.,Gkatzelis G.I.,et al. Chemical Tomography in a Fresh Wildland Fire Plume: A Large Eddy Simulation (LES) Study[J],2021,126(18).
APA	Wang S..,Coggon M.M..,Gkatzelis G.I..,Warneke C..,Bourgeois I..,...&Emmons L.K..(2021).Chemical Tomography in a Fresh Wildland Fire Plume: A Large Eddy Simulation (LES) Study.Journal of Geophysical Research: Atmospheres,126(18).
MLA	Wang S.,et al."Chemical Tomography in a Fresh Wildland Fire Plume: A Large Eddy Simulation (LES) Study".Journal of Geophysical Research: Atmospheres 126.18(2021).