DOI: 10.1016/j.atmosenv.2019.117208
论文题名: Effect of vertical parameterization of a missing daytime source of HONO on concentrations of HONO, O3 and secondary organic aerosols in eastern China
作者: Guo Y. ; Zhang J. ; An J. ; Qu Y. ; Liu X. ; Sun Y. ; Chen Y.
刊名: Atmospheric Environment
ISSN: 1352-2310
出版年: 2020
卷: 226 语种: 英语
英文关键词: Aerosols
; Air quality
; Atmospheric boundary layer
; Atmospheric chemistry
; Nitrogen oxides
; Photolysis
; Weather forecasting
; HONO
; Photolysis frequencies
; Secondary organic aerosols
; SOAs
; Theoretical calculations
; Vertical distributions
; Weather research and forecasting models
; WRF-Chem
; Inorganic acids
; nitrous acid
; ozone
; aerosol
; air quality
; boundary layer
; concentration (composition)
; nitrous acid
; parameterization
; vertical distribution
; air quality
; Article
; atmosphere
; autumn
; boundary layer
; China
; concentration (parameter)
; controlled study
; measurement
; photolysis
; priority journal
; secondary organic aerosol
; simulation
; summer
; troposphere
; winter
; China
学科: Atmospheric boundary layer
; HONO
; SOAs
; WRF-Chem
中文摘要: Unexpectedly high daytime concentrations of nitrous acid (HONO) measured by field observations cannot be explained by theoretical calculations, implying that there may be a missing source of HONO in the daytime (Pmissing). The value of Pmissing near the ground (PGmissing) is different from that measured higher in the atmosphere (PHmissing) according to previous field studies, but the contribution of the vertical Pmissing profile in the atmospheric boundary layer (ABL) to air quality remains unknown. We derived a new formula PGmissing = 0.180 × J(NO2) [ppb s−1] based on field measurements near the ground, where J(NO2) is the photolysis frequency of NO2, and used the value of PHmissing inferred from Zeppelin measurements in the troposphere to parameterize Pmissing in the ABL. This parameterization was incorporated into the Weather Research and Forecasting model with Chemistry (WRF-Chem) to quantify the vertical effects of Pmissing on the concentrations of HONO, O3 and secondary organic aerosols (SOAs) in eastern China. Our results showed that PGmissing and PHmissing together further narrowed the gap between the simulations and observations, leading to a daytime increase in HONO concentrations of about 160 ppt near the ground in summer, autumn and winter compared with PGmissing only, an increase in the daytime concentrations of O3 of 8–37 ppb within the ABL in almost all of the studied domain in summer (1–19 ppb in winter and 4–21 ppb in autumn) and the largest hourly increase in the concentration of SOAs of 22.5 (18.6) μg m−3 in winter (summer). The results indicated that HONO sources near the ground have a limited effect on the HONO concentrations in the upper ABL even in summer in the presence of strong convective activities. The HONO increase in the upper ABL can affect the concentration of HONO near the ground. When PGmissing was inserted into each model layer in the ABL, the concentrations of HONO higher in the atmosphere were substantially overestimated, suggesting that observations of the vertical distribution of HONO in the ABL are required in polluted areas. © 2020 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/160871
Appears in Collections: 气候变化与战略
There are no files associated with this item.
作者单位: State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China; College of Earth Sciences, University of the Chinese Academy of Sciences, Beijing, 100049, China; Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China; State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing, 100875, China
Recommended Citation:
Guo Y.,Zhang J.,An J.,et al. Effect of vertical parameterization of a missing daytime source of HONO on concentrations of HONO, O3 and secondary organic aerosols in eastern China[J]. Atmospheric Environment,2020-01-01,226