DOI: 10.1002/jgrd.50293
论文题名: Ozone distribution in the lower troposphere over complex terrain in Central Chile
作者: Seguel R.J. ; Mancilla C.A. ; Rondanelli R. ; Leiva M.A. ; Morales R.G.E.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 7 起始页码: 2966
结束页码: 2980
语种: 英语
Scopus关键词: Air pollution
; Landforms
; Meteorological instruments
; Ozone
; Complex topographies
; Horizontal gradients
; Local environments
; Ozone concentration
; Ozone mixing ratio
; Photochemical pollution
; Southern California
; Surface observation
; Ozone layer
; atmospheric chemistry
; atmospheric pollution
; boundary layer
; complex terrain
; concentration (composition)
; mixed layer
; mixing ratio
; nitrogen oxides
; ozone
; photochemistry
; pollutant transport
; troposphere
; volatile organic compound
; Aconcagua Valley
; Chile
; Metropolitana
; Valparaiso [Chile]
英文摘要: Observations were performed in 12 communities of Central Chile in order to determine the horizontal gradients of ozone in the Santiago Basin and surrounding valleys. Higher ozone mixing ratios were found northeast of the Santiago Basin and included east of the Aconcagua Valley (∼70 km from Santiago) suggesting that photochemical pollution produced in Santiago is capable of passing through the Chacabuco mountain chain (∼1.3 km) and have impact downwind from the regions with the largest NOx and VOC emissions. To complement existing surface observations, ozonesonde and tethersonde campaigns were performed in the Santiago Basin and the Aconcagua Valley. The results suggest ozone can accumulate in layers aloft (e.g., >102 ppb at 2 km) similarly to layers observed in complex topography coastal regions like Southern California. Layers of significant ozone concentrations having a near surface origin were observed above the mixed layer and below the subsidence inversion base. We propose that the ozone in this residual layer can be transported large distances (at least to 70 km) to further penetrate into the local environment under conditions of a well-mixed boundary layer. © 2013. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63843
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: 1National Center of the Environment, Avenida Larraín 9975, CP: 7880096, La Reina, Santiago, Chile; Department of Atmospheric and Oceanic Sciences, University of California, 405 Hilgard Avenue, Los Angeles, CA 90095-1565, United States; Department of Geophysics, University of Chile, Santiago, Chile; Center for Climate and Resilience Research, Santiago, Chile; Centre for Environmental Sciences, University of Chile, Santiago, Chile
Recommended Citation:
Seguel R.J.,Mancilla C.A.,Rondanelli R.,et al. Ozone distribution in the lower troposphere over complex terrain in Central Chile[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(7)