DOI: 10.1016/j.atmosenv.2020.117303
论文题名: Weekly patterns and weekend effects of air pollution in the Moscow megacity
作者: Elansky N.F. ; Shilkin A.V. ; Ponomarev N.A. ; Semutnikova E.G. ; Zakharova P.V.
刊名: Atmospheric Environment
ISSN: 1352-2310
出版年: 2020
卷: 224 语种: 英语
英文关键词: Air quality
; Atmospheric boundary layer
; Atmospheric chemistry
; Atmospheric movements
; Methane
; Nitrogen oxides
; Ozone
; Anthropogenic emissions
; Megacities
; Ozone production
; Pollutant variations
; Weekend effects
; Ozone layer
; methane
; ozone
; radical
; air quality
; anthropogenic effect
; atmospheric pollution
; boundary layer
; greenbelt
; human activity
; ozone
; surface temperature
; temperature inversion
; air monitoring
; air pollution
; air temperature
; Article
; boundary layer
; city
; comparative study
; Fourier transform
; humidity
; meteorology
; oil industry
; photochemistry
; priority journal
; Russian Federation
; seasonal variation
; surface property
; Idaho
; Moscow [Idaho]
; United States
学科: Air quality
; Anthropogenic emissions
; Megacity environment
; Ozone production
; Pollutant variations
; Weekend effect
中文摘要: The weekly cycle and weekend effect in the O3, NO, NO2, CO, CH4, SO2, NMHC, and PM10 concentrations were investigated in the Moscow megacity using in-situ measurements from January 1, 2005 to December 31, 2014 at 49 stations of the Moscow Environment Monitoring network. Daily variations in the CO, NOx, NMHC, and PM10 concentrations depend mainly on motor transport emissions and the atmospheric boundary layer vertical stratification. The characteristic feature of Moscow is the time coincidence of rush hours and surface temperature inversion during the cold season, which results in pollutant accumulation in the atmospheric surface layer. It was found that the surface concentrations of the pollutants (except ozone and methane) decrease on weekends. Weekday (Tuesday–Friday)-Sunday differences in the daytime (08:00–22:00 LT) NO, NO2, CO, SO2, NMHC, and PM10 concentrations relative to those of weekday period averaged for all stations over 2005–2014 amounted to 23.9 ± 5.8, 16.7 ± 2.8, 13.6 ± 3.3, 7.6 ± 6.5, 6.3 ± 2.2, and 14.5 ± 5.1%, respectively. The ozone concentration increased on Sunday by 16.5 ± 4.8%. The methane concentration on weekends was the same as on weekdays. The weekend effects in all pollutant concentrations were weakened within the greenbelt around Moscow. In different sectors of Moscow the pollutant weekend effects except that in SO2 were approximately the same. The vertical structure of the NO, NO2, and CO weekend effects was analyzed based on data obtained from measurements at the TV tower 500 m in height. These weekend effects decreased nonlinearly with height. Estimates obtained for basic criteria of activity of photochemical processes determining the formation of the weekly cycle and weekend effect of ozone (NMHC/NOx ratio, fraction of radical loss via NOx chemistry, concentration of Ox) show that the VOC-limited chemistry is characteristic of Moscow. © 2020 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/160483
Appears in Collections: 气候变化与战略
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作者单位: A.M. Obukhov Institute of Atmospheric Physics, Russian Academy of Sciences, Pyzhevsky Pereulok, 3, Moscow, 119017, Russian Federation; Research and Production Association “Typhoon”, Pobedy St., 4, Obninsk, 249038, Russian Federation; Lomonosov Moscow State University, Leninskie Gory, 1–2, Moscow, 119234, Russian Federation; Department for Environmental Management and Protection, Novyi Arbat, 11, Moscow, 119019, Russian Federation; Budgetary Environmental Protection Institution “MosEcoMonitoring”, Novyi Arbat, 11, Moscow, 119019, Russian Federation
Recommended Citation:
Elansky N.F.,Shilkin A.V.,Ponomarev N.A.,et al. Weekly patterns and weekend effects of air pollution in the Moscow megacity[J]. Atmospheric Environment,2020-01-01,224