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

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)3230-3239
Number of pages10
JournalAtmospheric Environment
Issue number18
Publication statusPublished - 2006 Jun
Externally publishedYes


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

ASJC Scopus subject areas

  • Environmental Science(all)
  • Atmospheric Science


Dive into the research topics of 'Examination on photostationary state of NOx in the urban atmosphere in Japan'. Together they form a unique fingerprint.

Cite this