Ground-based observation of lightning-induced nitrogen oxides at a mountaintop in free troposphere

Ryuichi Wada, Y. Sadanaga, S. Kato, N. Katsumi, Hiroshi Okochi, Y. Iwamoto, K. Miura, H. Kobayashi, M. Kamogawa, Jun Matsumoto, S. Yonemura, Y. Matsumi, M. Kajino, S. Hatakeyama

研究成果: Article

抄録

Lightning is an important source of nitrogen oxides (LNO x ). The actual global production of LNO x is still largely uncertain. One of the reasons for this uncertainty is the limited available observation data. We measured the concentrations of total reactive nitrogen (NO y ), nitric oxide (NO) and nitrogen dioxides (NO 2 ) and then obtained NO x oxidation products (NO z : NO z = NO y - NO x ) at a station at the top of Mount Fuji (3776 m a.s.l.) during the summer of 2017. Increases in NO y and NO 2 were observed on 22 August 2017. These peaks were unaccompanied by increases in CO, which suggested that the observed air mass did not contain emissions from combustion. The backward trajectories of the above air mass indicated that it moved across areas where lightning occurred. The NO y concentration was also calculated by using a chemical transport model, which did not take NO x produced by lightning into account. Therefore, the NO y concentration due to lightning can be inferred by subtracting the calculated NO y from the observed NO y concentrations. The concentration of NO y at 13:00 on 22 August 2017 originating from lightning was estimated to be 1.11 ± 0.02 ppbv, which comprised 97 ± 2% of the total NO y concentration. The fractions of NO 2 and NO z in the total NO y were 0.54 ± 0.01 and 0.46 ± 0.03, respectively. The NO concentration was below the detection limit. We firstly observed increase of concentrations of NO y originating from lightning by ground-based observation and demonstrated the quantitative estimates of LNO x using model-based calculation.

元の言語English
ジャーナルJournal of Atmospheric Chemistry
DOI
出版物ステータスPublished - 2019 1 1

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Nitrogen Oxides
Troposphere
Lightning
nitric oxide
nitrogen oxides
lightning
troposphere
Nitric Oxide
air mass

ASJC Scopus subject areas

  • Environmental Chemistry
  • Atmospheric Science

これを引用

Ground-based observation of lightning-induced nitrogen oxides at a mountaintop in free troposphere. / Wada, Ryuichi; Sadanaga, Y.; Kato, S.; Katsumi, N.; Okochi, Hiroshi; Iwamoto, Y.; Miura, K.; Kobayashi, H.; Kamogawa, M.; Matsumoto, Jun; Yonemura, S.; Matsumi, Y.; Kajino, M.; Hatakeyama, S.

:: Journal of Atmospheric Chemistry, 01.01.2019.

研究成果: Article

Wada, R, Sadanaga, Y, Kato, S, Katsumi, N, Okochi, H, Iwamoto, Y, Miura, K, Kobayashi, H, Kamogawa, M, Matsumoto, J, Yonemura, S, Matsumi, Y, Kajino, M & Hatakeyama, S 2019, 'Ground-based observation of lightning-induced nitrogen oxides at a mountaintop in free troposphere', Journal of Atmospheric Chemistry. https://doi.org/10.1007/s10874-019-09391-4
Wada, Ryuichi ; Sadanaga, Y. ; Kato, S. ; Katsumi, N. ; Okochi, Hiroshi ; Iwamoto, Y. ; Miura, K. ; Kobayashi, H. ; Kamogawa, M. ; Matsumoto, Jun ; Yonemura, S. ; Matsumi, Y. ; Kajino, M. ; Hatakeyama, S. / Ground-based observation of lightning-induced nitrogen oxides at a mountaintop in free troposphere. :: Journal of Atmospheric Chemistry. 2019.
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title = "Ground-based observation of lightning-induced nitrogen oxides at a mountaintop in free troposphere",
abstract = "Lightning is an important source of nitrogen oxides (LNO x ). The actual global production of LNO x is still largely uncertain. One of the reasons for this uncertainty is the limited available observation data. We measured the concentrations of total reactive nitrogen (NO y ), nitric oxide (NO) and nitrogen dioxides (NO 2 ) and then obtained NO x oxidation products (NO z : NO z = NO y - NO x ) at a station at the top of Mount Fuji (3776 m a.s.l.) during the summer of 2017. Increases in NO y and NO 2 were observed on 22 August 2017. These peaks were unaccompanied by increases in CO, which suggested that the observed air mass did not contain emissions from combustion. The backward trajectories of the above air mass indicated that it moved across areas where lightning occurred. The NO y concentration was also calculated by using a chemical transport model, which did not take NO x produced by lightning into account. Therefore, the NO y concentration due to lightning can be inferred by subtracting the calculated NO y from the observed NO y concentrations. The concentration of NO y at 13:00 on 22 August 2017 originating from lightning was estimated to be 1.11 ± 0.02 ppbv, which comprised 97 ± 2{\%} of the total NO y concentration. The fractions of NO 2 and NO z in the total NO y were 0.54 ± 0.01 and 0.46 ± 0.03, respectively. The NO concentration was below the detection limit. We firstly observed increase of concentrations of NO y originating from lightning by ground-based observation and demonstrated the quantitative estimates of LNO x using model-based calculation.",
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T1 - Ground-based observation of lightning-induced nitrogen oxides at a mountaintop in free troposphere

AU - Wada, Ryuichi

AU - Sadanaga, Y.

AU - Kato, S.

AU - Katsumi, N.

AU - Okochi, Hiroshi

AU - Iwamoto, Y.

AU - Miura, K.

AU - Kobayashi, H.

AU - Kamogawa, M.

AU - Matsumoto, Jun

AU - Yonemura, S.

AU - Matsumi, Y.

AU - Kajino, M.

AU - Hatakeyama, S.

PY - 2019/1/1

Y1 - 2019/1/1

N2 - Lightning is an important source of nitrogen oxides (LNO x ). The actual global production of LNO x is still largely uncertain. One of the reasons for this uncertainty is the limited available observation data. We measured the concentrations of total reactive nitrogen (NO y ), nitric oxide (NO) and nitrogen dioxides (NO 2 ) and then obtained NO x oxidation products (NO z : NO z = NO y - NO x ) at a station at the top of Mount Fuji (3776 m a.s.l.) during the summer of 2017. Increases in NO y and NO 2 were observed on 22 August 2017. These peaks were unaccompanied by increases in CO, which suggested that the observed air mass did not contain emissions from combustion. The backward trajectories of the above air mass indicated that it moved across areas where lightning occurred. The NO y concentration was also calculated by using a chemical transport model, which did not take NO x produced by lightning into account. Therefore, the NO y concentration due to lightning can be inferred by subtracting the calculated NO y from the observed NO y concentrations. The concentration of NO y at 13:00 on 22 August 2017 originating from lightning was estimated to be 1.11 ± 0.02 ppbv, which comprised 97 ± 2% of the total NO y concentration. The fractions of NO 2 and NO z in the total NO y were 0.54 ± 0.01 and 0.46 ± 0.03, respectively. The NO concentration was below the detection limit. We firstly observed increase of concentrations of NO y originating from lightning by ground-based observation and demonstrated the quantitative estimates of LNO x using model-based calculation.

AB - Lightning is an important source of nitrogen oxides (LNO x ). The actual global production of LNO x is still largely uncertain. One of the reasons for this uncertainty is the limited available observation data. We measured the concentrations of total reactive nitrogen (NO y ), nitric oxide (NO) and nitrogen dioxides (NO 2 ) and then obtained NO x oxidation products (NO z : NO z = NO y - NO x ) at a station at the top of Mount Fuji (3776 m a.s.l.) during the summer of 2017. Increases in NO y and NO 2 were observed on 22 August 2017. These peaks were unaccompanied by increases in CO, which suggested that the observed air mass did not contain emissions from combustion. The backward trajectories of the above air mass indicated that it moved across areas where lightning occurred. The NO y concentration was also calculated by using a chemical transport model, which did not take NO x produced by lightning into account. Therefore, the NO y concentration due to lightning can be inferred by subtracting the calculated NO y from the observed NO y concentrations. The concentration of NO y at 13:00 on 22 August 2017 originating from lightning was estimated to be 1.11 ± 0.02 ppbv, which comprised 97 ± 2% of the total NO y concentration. The fractions of NO 2 and NO z in the total NO y were 0.54 ± 0.01 and 0.46 ± 0.03, respectively. The NO concentration was below the detection limit. We firstly observed increase of concentrations of NO y originating from lightning by ground-based observation and demonstrated the quantitative estimates of LNO x using model-based calculation.

KW - Ground-based observation

KW - Lightning-induced nitrogen oxides

KW - LNO

KW - Mountain

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U2 - 10.1007/s10874-019-09391-4

DO - 10.1007/s10874-019-09391-4

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JO - Journal of Atmospheric Chemistry

JF - Journal of Atmospheric Chemistry

SN - 0167-7764

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