DOI: 10.1002/grl.50242
论文题名: Linking NO2 surface concentration and integrated content in the urban developed atmospheric boundary layer
作者: Dieudonné E. ; Ravetta F. ; Pelon J. ; Goutail F. ; Pommereau J.-P.
刊名: Geophysical Research Letters
ISSN: 0094-9235
EISSN: 1944-8966
出版年: 2013
卷: 40, 期: 6 起始页码: 1247
结束页码: 1251
语种: 英语
英文关键词: Nitrogen dioxide
; remote-sensing
; vertical mixing
Scopus关键词: Average concentration
; Linear relationships
; Mean concentrations
; Nitrogen dioxides
; Pollution surveys
; Surface concentration
; Vertical gradients
; Vertical mixing
; Atmospheric boundary layer
; Mixing
; Nitrogen compounds
; Optical radar
; Nitrogen oxides
; atmospheric chemistry
; boundary layer
; concentration (composition)
; data set
; nitrogen dioxide
; orography
; remote sensing
; ultraviolet radiation
; urban area
; vertical mixing
; France
; Ile de France
; Paris
; Ville de Paris
英文摘要: A statistical linear relationship between NO2 surface concentration and its integrated content in the atmospheric boundary layer (ABL) is established in urban conditions, using ABL depth as an ancillary parameter. This relationship relies on a unique data set including 20 months of observations from a ground-based UV-visible light spectrometer and from an aerosol lidar, both located in Paris inner city center. Measurements show that in all seasons, large vertical gradients of NO2 concentration exist in Paris developed ABL, explaining why the average concentration retrieved is only about 25% of NO2 surface concentration. This result shows that the commonly used hypothesis of constant mixing ratio in the ABL is not valid over urban areas, where large NOx emissions occur. Moreover, the relationship obtained is robust, and the studied area lacks of any particular orographic features, so that our results should be more widely applicable to pollution survey from space-borne observations. Key Points Paris daytime boundary layer has strong vertical gradients of NO2 concentration NO2 mean concentration in Paris daytime boundary layer is 1/4 of surface value Robust link established between NO2 integrated content and surface concentration. ©2013 American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84876942338&doi=10.1002%2fgrl.50242&partnerID=40&md5=cb16d4b0b88e71668b6d7088311cb470
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6499
Appears in Collections: 气候减缓与适应
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作者单位: LATMOS/IPSL, CNRS/UPMC, Paris, France
Recommended Citation:
Dieudonné E.,Ravetta F.,Pelon J.,et al. Linking NO2 surface concentration and integrated content in the urban developed atmospheric boundary layer[J]. Geophysical Research Letters,2013-01-01,40(6).