Daytime Oxidized Reactive Nitrogen Partitioning in Western U.S. Wildfire Smoke Plumes
Daytime Oxidized Reactive Nitrogen Partitioning in Western U.S. Wildfire Smoke Plumes
复制标题
美国西部野火烟羽中的白天氧化活性氮分配
DOI：
10.1029/2020jd033484
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Pierce, Jeffrey R.
中科院分区：
文献类型：
--
作者：
Juncosa Calahorrano, Julieta F.;Lindaas, Jakob;O'Dell, Katelyn;Palm, Brett B.;Peng, Qiaoyun;Flocke, Frank;Pollack, Ilana B.;Garofalo, Lauren A.;Farmer, Delphine K.;Pierce, Jeffrey R.
云化学、气溶胶吸收和氮的西部野火实验（WE-CAN）于2018年夏天在美国西部部署了NSF/NCAR C-130飞机，在野火烟雾的最初几天进行大气演变采样。我们提出了一个子集的反应性氧化态氮物种（NOy）在羽流采样的伪拉格朗日时尚的总结。氮氧化物（NOx= NO + NO2）和亚硝酸（HONO）的排放迅速转化为更氧化的形式。在4小时内，约86%的硝酸盐以过氧酰基硝酸盐（PAN）（约37%）、颗粒硝酸盐（pNO 3）（约27%）和气相有机硝酸盐（pNO 3（g））（约23%）的形式存在。NOx的平均折叠时间和距离分别为约90 min和约40 km。在以伪拉格朗日方式采样的羽流中几乎没有观察到硝酸（HNO 3）的增加，这意味着HNO 3限制硝酸铵（NH 4 NO3）的形成，有一个值得注意的例外，我们强调作为案例研究。我们还总结了NOin在我们可以拦截的所有烟雾样品中观察到的分区。在海拔3 km以上的烟尘样品中，PANs和pNO 3对CONOy的贡献随海拔升高而增大。我们还可以在加州中央谷采集多起火灾产生的烟雾和人为排放物的混合样本。我们区分样品的人为氮氧化物排放似乎导致氮氧化物丰度增加了四倍，并有助于额外的PAN形成。
The Western Wildfire Experiment for Cloud Chemistry, Aerosol Absorption, and Nitrogen (WE‐CAN) deployed the NSF/NCAR C‐130 aircraft in summer 2018 across the western U.S. to sample wildfire smoke during its first days of atmospheric evolution. We present a summary of a subset of reactive oxidized nitrogen species (NOy) in plumes sampled in a pseudo‐Lagrangian fashion. Emissions of nitrogen oxides (NOx= NO + NO2) and nitrous acid (HONO) are rapidly converted to more oxidized forms. Within 4 h, ∼86% of the ΣNOyis in the form of peroxy acyl nitrates (PANs) (∼37%), particulate nitrate (pNO3) (∼27%), and gas‐phase organic nitrates (Org N(g)) (∼23%). The averagee‐folding time and distance for NOxare ∼90 min and ∼40 km, respectively. Nearly no enhancements in nitric acid (HNO3) were observed in plumes sampled in a pseudo‐Lagrangian fashion, implying HNO3‐limited ammonium nitrate (NH4NO3) formation, with one notable exception that we highlight as a case study. We also summarize the observed partitioning of NOyin all the smoke samples intercepted during WE‐CAN. In smoke samples intercepted above 3 km above sea level (ASL), the contributions of PANs andpNO3to ΣNOyincrease with altitude. WE‐CAN also sampled smoke from multiple fires mixed with anthropogenic emissions over the California Central Valley. We distinguish samples where anthropogenic NOxemissions appear to lead to an increase in NOxabundances by a factor of four and contribute to additional PAN formation.
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影响因子：
6.3
作者：
Huihui Wu;Jonathan W. Taylor;K. Szpek;J. Langridge;P. Williams;M. Flynn;J. Allan;S. Abel;J. Pitt;M. Cotterell;C. Fox;Nicholas W. Davies;J. Haywood;H. Coe
通讯作者：
Huihui Wu;Jonathan W. Taylor;K. Szpek;J. Langridge;P. Williams;M. Flynn;J. Allan;S. Abel;J. Pitt;M. Cotterell;C. Fox;Nicholas W. Davies;J. Haywood;H. Coe
DOI：
10.1029/2004jd004974
发表时间：
2004-12
期刊：
Journal of Geophysical Research: Atmospheres
影响因子：
--
作者：
R. Hudman;D. Jacob;O. Cooper;M. J. Evans;C. Heald;R. Park;F. Fehsenfeld;F. Flocke;J. Holloway;G. Hübler;K. Kita;M. Koike;Y. Kondo;A. Neuman;Jonathan Nowak;S. Oltmans;D. Parrish;J. Roberts;T. Ryerson
通讯作者：
R. Hudman;D. Jacob;O. Cooper;M. J. Evans;C. Heald;R. Park;F. Fehsenfeld;F. Flocke;J. Holloway;G. Hübler;K. Kita;M. Koike;Y. Kondo;A. Neuman;Jonathan Nowak;S. Oltmans;D. Parrish;J. Roberts;T. Ryerson
影响因子：
5
作者：
H. Singh;B. Anderson;W. Brune;C. Cai;R. Cohen;J. Crawford;M. Cubison;E. Czech;L. Emmons;H. Fuelberg;G. Huey;D. Jacob;J. Jimenez;A. Kaduwela;Y. Kondo;J. Mao;J. Olson;G. Sachse;S. Vay;A. Weinheimer;P. Wennberg;A. Wisthaler
通讯作者：
H. Singh;B. Anderson;W. Brune;C. Cai;R. Cohen;J. Crawford;M. Cubison;E. Czech;L. Emmons;H. Fuelberg;G. Huey;D. Jacob;J. Jimenez;A. Kaduwela;Y. Kondo;J. Mao;J. Olson;G. Sachse;S. Vay;A. Weinheimer;P. Wennberg;A. Wisthaler
2015 年夏季，古老的野火烟雾对科罗拉多州前沿山脉大气成分和臭氧的影响
DOI：
--
发表时间：
2017
期刊：
影响因子：
--
作者：
J. Lindaas;D. Farmer;I. Pollack;A. Abeleira;F. Flocke;Rob Roscioli;S. Herndon;E. Fischer
通讯作者：
E. Fischer
影响因子：
6.3
作者：
Alvarado, M. J.;Logan, J. A.;Le Sager, P.
通讯作者：
Le Sager, P.