Examination on photostationary state of NOx in the urban atmosphere in Japan

Jun Matsumoto; Naohiro Kosugi; Ayaka Nishiyama; Ryoko Isozaki; Yasuhiro Sadanaga; Shungo Kato; Hiroshi Bandow; Yoshizumi Kajii

doi:10.1016/j.atmosenv.2006.02.002

Examination on photostationary state of NO_x in the urban atmosphere in Japan

Jun Matsumoto, Naohiro Kosugi, Ayaka Nishiyama, Ryoko Isozaki, Yasuhiro Sadanaga, Shungo Kato, Hiroshi Bandow, Yoshizumi Kajii

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

Abstract

To investigate the photostationary state (PSS) of nitrogen oxides (NO_x), fast and precise measurements of related compounds were simultaneously carried out in the urban atmosphere. A PSS parameter φ including the observed peroxy radical (RO_x) was examined. Consequently, φ was not significantly different from unity in many cases. Observed NO_x, O₃, J_NO2 and RO_x could reasonably elucidate the PSS of NO_x. Meanwhile, in some cases with large RO_x/O₃, φ was significantly less than unity. It was suggested that the reaction rate coefficients of RO_x with NO could be critical for the PSS in the urban atmosphere. It was confirmed that the LIF instrument is promising to observationally approach the PSS of NO_x.

Original language	English
Pages (from-to)	3230-3239
Number of pages	10
Journal	Atmospheric Environment
Volume	40
Issue number	18
DOIs	https://doi.org/10.1016/j.atmosenv.2006.02.002
Publication status	Published - 2006 Jun 1
Externally published	Yes

Keywords

Laser-induced fluorescence (LIF)
Nitrogen oxides
Peroxy radicals
Photostationary state (PSS)
Reaction rate coefficients

ASJC Scopus subject areas

Environmental Science(all)
Atmospheric Science

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title = "Examination on photostationary state of NOx in the urban atmosphere in Japan",

abstract = "To investigate the photostationary state (PSS) of nitrogen oxides (NOx), fast and precise measurements of related compounds were simultaneously carried out in the urban atmosphere. A PSS parameter φ including the observed peroxy radical (ROx) was examined. Consequently, φ was not significantly different from unity in many cases. Observed NOx, O3, JNO2 and ROx could reasonably elucidate the PSS of NOx. Meanwhile, in some cases with large ROx/O3, φ was significantly less than unity. It was suggested that the reaction rate coefficients of ROx with NO could be critical for the PSS in the urban atmosphere. It was confirmed that the LIF instrument is promising to observationally approach the PSS of NOx.",

keywords = "Laser-induced fluorescence (LIF), Nitrogen oxides, Peroxy radicals, Photostationary state (PSS), Reaction rate coefficients",

author = "Jun Matsumoto and Naohiro Kosugi and Ayaka Nishiyama and Ryoko Isozaki and Yasuhiro Sadanaga and Shungo Kato and Hiroshi Bandow and Yoshizumi Kajii",

year = "2006",

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doi = "10.1016/j.atmosenv.2006.02.002",

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T1 - Examination on photostationary state of NOx in the urban atmosphere in Japan

AU - Matsumoto, Jun

AU - Kosugi, Naohiro

AU - Nishiyama, Ayaka

AU - Isozaki, Ryoko

AU - Sadanaga, Yasuhiro

AU - Kato, Shungo

AU - Bandow, Hiroshi

AU - Kajii, Yoshizumi

PY - 2006/6/1

Y1 - 2006/6/1

N2 - To investigate the photostationary state (PSS) of nitrogen oxides (NOx), fast and precise measurements of related compounds were simultaneously carried out in the urban atmosphere. A PSS parameter φ including the observed peroxy radical (ROx) was examined. Consequently, φ was not significantly different from unity in many cases. Observed NOx, O3, JNO2 and ROx could reasonably elucidate the PSS of NOx. Meanwhile, in some cases with large ROx/O3, φ was significantly less than unity. It was suggested that the reaction rate coefficients of ROx with NO could be critical for the PSS in the urban atmosphere. It was confirmed that the LIF instrument is promising to observationally approach the PSS of NOx.

AB - To investigate the photostationary state (PSS) of nitrogen oxides (NOx), fast and precise measurements of related compounds were simultaneously carried out in the urban atmosphere. A PSS parameter φ including the observed peroxy radical (ROx) was examined. Consequently, φ was not significantly different from unity in many cases. Observed NOx, O3, JNO2 and ROx could reasonably elucidate the PSS of NOx. Meanwhile, in some cases with large ROx/O3, φ was significantly less than unity. It was suggested that the reaction rate coefficients of ROx with NO could be critical for the PSS in the urban atmosphere. It was confirmed that the LIF instrument is promising to observationally approach the PSS of NOx.

KW - Laser-induced fluorescence (LIF)

KW - Nitrogen oxides

KW - Peroxy radicals

KW - Photostationary state (PSS)

KW - Reaction rate coefficients

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