| DOI: | 10.1016/j.atmosenv.2014.07.054
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| Scopus记录号: | 2-s2.0-84905407791
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| 论文题名: | Deviations from the O3-NO-NO2 photo-stationary state in Delhi, India |
| 作者: | Chate D; M; , Ghude S; D; , Beig G; , Mahajan A; S; , Jena C; , Srinivas R; , Dahiya A; , Kumar N
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| 刊名: | Atmospheric Environment
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| ISSN: | 0168-2563
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| EISSN: | 1573-515X
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| 出版年: | 2014
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| 卷: | 96 | | 起始页码: | 353
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| 结束页码: | 358
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| 语种: | 英语
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| 英文关键词: | Leighton ratio
; Nitrogen oxides
; Ozone
; Photo-stationary state
; SAFAR
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| Scopus关键词: | Air quality
; Atmospheric chemistry
; Mixing
; Ozone
; Air quality forecasting
; Diurnal variation
; Leighton ratio
; Negative deviations
; Photo-stationary state
; SAFAR
; Stationary state
; Weather monitoring
; Nitrogen oxides
; nitrogen oxide
; ozone
; peroxy radical
; air quality
; atmospheric chemistry
; diurnal variation
; estimation method
; metropolitan area
; mixing ratio
; ozone
; air quality
; article
; atmosphere
; circadian rhythm
; concentration (parameters)
; forecasting
; human
; India
; measurement
; meteorology
; ozone layer
; photo stationary state
; photochemistry
; priority journal
; Delhi
; India
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| Scopus学科分类: | Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
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| 英文摘要: | A network of air quality and weather monitoring stations was set-up across Delhi, India, under the System of Air quality Forecasting And Research (SAFAR) project. The objective of this network was to enable better understanding of air quality in terms of atmospheric chemistry, emissions and forecasting in Delhi, one of the largest metropolises in the world. In this study, we focus on the O3-NO-NO2-triad Photo Stationary State (PSS), and investigate site-specific deviations in the Leighton Ratio (Φ) during a short period in 2012 (1-31 December). Large variations were observed in the NO (<1ppbv to a peak of 295ppbv), NO2 (<2ppbv-47ppbv) and O3 (4ppbv-95ppbv) mixing ratios, all of which showed strong diurnal variation. The Φ values showed large deviations from unity over the measurement period, with mostly negative deviations (Φ<1), showing that the air masses were dominated by local sources of NOx and that the PSS was not achieved. Positive deviations (Φ>1) were also observed occasionally, and these data were used to estimate the total peroxy radical (PO2) mixing ratios. This is the first estimate of PO2 reported for the city of Delhi and compares well with the results in the literature. © 2014 Elsevier Ltd. |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/81044
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| Appears in Collections: | 气候变化事实与影响
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作者单位: | Indian Institute of Tropical Meteorology, Pune, India; TERI University, Delhi, India
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| Recommended Citation: | |
Chate D,M,, Ghude S,et al. Deviations from the O3-NO-NO2 photo-stationary state in Delhi, India[J]. Atmospheric Environment,2014-01-01,96
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