The importance of NO2 and volatile organic compounds in the urban air from the viewpoint of the OH reactivity

Y. Sadanaga, A. Yoshino, S. Kato, A. Yoshioka, K. Watanabe, Y. Miyakawa, I. Hayashi, M. Ichikawa, Jun Matsumoto, A. Nishiyama, N. Akiyama, Y. Kanaya, Y. Kajii

Research output: Contribution to journalArticle

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Abstract

Total OH reactivity was measured in the suburban area, Tokyo, in July and August 2003, by use of a laser-induced pump and probe technique. More than 90% of the measured data of the OH loss rates were higher than the calculated values with simultaneously measured concentrations of various trace species. The maximum difference between the measured and calculated values is 34.3%. However, this difference was reduced to be 24.6% when using the rate coefficient of the OH + NO2 reaction recommended by IUPAC 1997, which is 40% larger than the most recently recommended value (JPL 2002). We concluded that this disagreement is due to the uncertainty of the OH + NO2 rate coefficient as well as existence of unmeasured VOCs. VOCs were quantitatively important as contribution to the OH loss processes.

Original languageEnglish
JournalGeophysical Research Letters
Volume31
Issue number8
DOIs
Publication statusPublished - 2004 Apr 28
Externally publishedYes

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volatile organic compounds
volatile organic compound
reactivity
air
suburban areas
suburban area
coefficients
pump
laser
probe
pumps
probes
lasers
rate
loss

ASJC Scopus subject areas

  • Earth and Planetary Sciences (miscellaneous)

Cite this

The importance of NO2 and volatile organic compounds in the urban air from the viewpoint of the OH reactivity. / Sadanaga, Y.; Yoshino, A.; Kato, S.; Yoshioka, A.; Watanabe, K.; Miyakawa, Y.; Hayashi, I.; Ichikawa, M.; Matsumoto, Jun; Nishiyama, A.; Akiyama, N.; Kanaya, Y.; Kajii, Y.

In: Geophysical Research Letters, Vol. 31, No. 8, 28.04.2004.

Research output: Contribution to journalArticle

Sadanaga, Y, Yoshino, A, Kato, S, Yoshioka, A, Watanabe, K, Miyakawa, Y, Hayashi, I, Ichikawa, M, Matsumoto, J, Nishiyama, A, Akiyama, N, Kanaya, Y & Kajii, Y 2004, 'The importance of NO2 and volatile organic compounds in the urban air from the viewpoint of the OH reactivity', Geophysical Research Letters, vol. 31, no. 8. https://doi.org/10.1029/2004GL019661
Sadanaga, Y. ; Yoshino, A. ; Kato, S. ; Yoshioka, A. ; Watanabe, K. ; Miyakawa, Y. ; Hayashi, I. ; Ichikawa, M. ; Matsumoto, Jun ; Nishiyama, A. ; Akiyama, N. ; Kanaya, Y. ; Kajii, Y. / The importance of NO2 and volatile organic compounds in the urban air from the viewpoint of the OH reactivity. In: Geophysical Research Letters. 2004 ; Vol. 31, No. 8.
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AU - Miyakawa, Y.

AU - Hayashi, I.

AU - Ichikawa, M.

AU - Matsumoto, Jun

AU - Nishiyama, A.

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