DOI: 10.1016/j.atmosenv.2017.04.018
Scopus记录号: 2-s2.0-85018338891
论文题名: Ozone production by corona discharges during a convective event in DISCOVER-AQ Houston
作者: Kotsakis A ; , Morris G ; A ; , Lefer B ; , Jeon W ; , Roy A ; , Minschwaner K ; , Thompson A ; M ; , Choi Y
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 161 起始页码: 13
结束页码: 17
语种: 英语
英文关键词: Corona discharge
; Lightning
; Ozone
; Ozonesonde
Scopus关键词: Electric corona
; Electric discharges
; Lightning
; Meteorological instruments
; Molecules
; NASA
; Troposphere
; Urban transportation
; Biomass burning emissions
; Chemical transport models
; Corona discharges
; Electrical discharges
; Electrically actives
; Ozone sondes
; Photochemical production
; Tropospheric chemistry
; Ozone
; nitrogen oxide
; ozone
; atmospheric convection
; biomass burning
; detection method
; lightning
; ozone
; ozonesonde
; parameterization
; profiler
; troposphere
; air quality
; Article
; biomass
; observational study
; photochemistry
; priority journal
; stratosphere
; thermodynamics
; Houston
; Texas
; United States
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: An ozonesonde launched near electrically active convection in Houston, TX on 5 September 2013 during the NASA DISCOVER-AQ project measured a large enhancement of ozone throughout the troposphere. A separate ozonesonde was launched from Smith Point, TX (∼58 km southeast of the Houston site) at approximately the same time as the launch from Houston and did not measure that enhancement. Furthermore, ozone profiles for the descent of both sondes agreed well with the ascending Smith Point profile, suggesting a highly localized event in both space and time in which an anomalously large enhancement of 70–100 ppbv appeared in the ascending Houston ozonesonde data. Compared to literature values, such an enhancement appears to be the largest observed to date. Potential sources of the localized ozone enhancement such as entrainment of urban or biomass burning emissions, downward transport from the stratosphere, photochemical production from lightning NOx, and direct ozone production from corona discharges were investigated using model simulations. We conclude that the most likely explanation for the large ozone enhancement is direct ozone production by corona discharges. Integrating the enhancement seen in the Houston ozone profile and using the number of electrical discharges detected by the NLDN (or HLMA), we estimate a production of 2.48 × 1028 molecules of ozone per flash which falls within the range of previously recorded values (9.89 × 1026–9.82 × 1028 molecules of ozone per flash). Since there is currently no parameterization for the direct production of ozone from corona discharges we propose the implementation of an equation into a chemical transport model. Ultimately, additional work is needed to further understand the occurrence and impact of corona discharges on tropospheric chemistry on short and long timescales. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82661
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Earth and Atmospheric Sciences, University of Houston, Houston, TX, United States; St. Edward's University, School of Natural Sciences, Austin, TX, United States; National Aeronautics and Space Administration Headquarters, Washington, DC, United States; New Mexico Tech, Department of Physics, Socorro, NM, United States; National Aeronautics and Space Administration, Goddard Space Flight Center, Greenbelt, MD, United States
Recommended Citation:
Kotsakis A,, Morris G,A,et al. Ozone production by corona discharges during a convective event in DISCOVER-AQ Houston[J]. Atmospheric Environment,2017-01-01,161