DOI: 10.1016/j.atmosenv.2014.10.057
Scopus记录号: 2-s2.0-84910002478
论文题名: Spatiotemporal inhomogeneity in NO2 over Fukuoka observed by ground-based MAX-DOAS
作者: Takashima H ; , Kanaya Y ; , Irie H
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 100 起始页码: 117
结束页码: 123
语种: 英语
英文关键词: Boundary layer
; Japan
; Land-sea breeze
; MAX-DOAS
; Nitrogen dioxide
Scopus关键词: Absorption spectroscopy
; Boundary layers
; Urban transportation
; Continuous observation
; Differential optical absorption spectroscopy
; Japan
; Land-sea breeze
; MAX-DOAS
; Nitrogen dioxides
; Profile observations
; Spatial in-homogeneity
; Nitrogen oxides
; nitrogen dioxide
; azimuth
; boundary layer
; homogeneity
; nitrogen dioxide
; pollutant transport
; sea breeze
; spatiotemporal analysis
; spectroscopy
; surface wind
; timescale
; urban area
; absorption spectroscopy
; air monitoring
; air pollution
; algorithm
; altitude
; Article
; boundary layer
; chemoluminescence
; circadian rhythm
; controlled study
; Japan
; limit of detection
; measurement accuracy
; multi axis differential optical absorption spectroscopy
; optical depth
; seasonal variation
; spatiotemporal analysis
; surface property
; time series analysis
; urban area
; Fukuoka [Kyushu]
; Japan
; Kyushu
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: Continuous NO2 profile observations have been made using ground-based Multi-Axis Differential Optical Absorption Spectroscopy (MAX-DOAS) at Fukuoka (33.55°N, 130.36°E), an urban area in Japan. Throughout the year, NO2 variations measured by MAX-DOAS (0-100m) are in good agreement with in situ surface NO2 measurements on several-day, week-to-week, and seasonal timescales. We investigated the spatiotemporal inhomogeneity in NO2 over Fukuoka by observing at two azimuth angles: the Tenjin (towards the city center) and Itoshima (away from the city center) directions. In terms of diurnal variations, NO2 in both directions show clear morning maxima, on account of local emissions in the morning and the development of a boundary layer. The concentrations in the early morning are nearly the same in both directions, but they are higher in the Tenjin direction during most of the daytime on average. Variability in both directions, as well as spatial inhomogeneity, is large during most of the daytime except for in the morning. The diurnal maximum for 0-1km between 10 and 13LT is sometimes observed in the Tenjin direction; in some cases, 1h after this maximum, a maximum is also observed in the Itoshima direction. The NO2 maxima for the upper level (1-2km) in both directions are also delayed from the maximum in the Tenjin direction for 0-1km. Analysis of the surface wind field indicates that the NO2 inhomogeneity is strongly related to vertical/horizontal transport of high concentrations of NO2 from the city center, and to horizontal transport of low concentrations from the ocean via a land-sea breeze. Three-dimensional continuous observations by MAX-DOAS are potentially a powerful tool for increasing our understanding of pollutant transport and mixing in urban areas. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82141
Appears in Collections: 气候变化事实与影响
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作者单位: Faculty of Science, Fukuoka University, Fukuoka, Japan; Department of Environmental Geochemical Cycle Research, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokohama, Japan; Center for Environmental Remote Sensing (CEReS), Chiba University, Chiba, Japan
Recommended Citation:
Takashima H,, Kanaya Y,, Irie H. Spatiotemporal inhomogeneity in NO2 over Fukuoka observed by ground-based MAX-DOAS[J]. Atmospheric Environment,2015-01-01,100