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Night-time measurements of HOx during the RONOCO project and analysis of the sources of HO2

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Night-time measurements of HOx during the RONOCO project and analysis of the sources of HO2. / Walker, H. M.; Stone, D.; Ingham, T. et al.
In: Atmospheric Chemistry and Physics, Vol. 15, No. 14, 23.07.2015, p. 8179-8200.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Walker, HM, Stone, D, Ingham, T, Vaughan, S, Cain, M, Jones, RL, Kennedy, OJ, McLeod, M, Ouyang, B, Pyle, J, Bauguitte, S, Bandy, B, Forster, G, Evans, MJ, Hamilton, JF, Hopkins, JR, Lee, JD, Lewis, AC, Lidster, RT, Punjabi, S, Morgan, WT & Heard, DE 2015, 'Night-time measurements of HOx during the RONOCO project and analysis of the sources of HO2', Atmospheric Chemistry and Physics, vol. 15, no. 14, pp. 8179-8200. https://doi.org/10.5194/acp-15-8179-2015

APA

Walker, H. M., Stone, D., Ingham, T., Vaughan, S., Cain, M., Jones, R. L., Kennedy, O. J., McLeod, M., Ouyang, B., Pyle, J., Bauguitte, S., Bandy, B., Forster, G., Evans, M. J., Hamilton, J. F., Hopkins, J. R., Lee, J. D., Lewis, A. C., Lidster, R. T., ... Heard, D. E. (2015). Night-time measurements of HOx during the RONOCO project and analysis of the sources of HO2. Atmospheric Chemistry and Physics, 15(14), 8179-8200. https://doi.org/10.5194/acp-15-8179-2015

Vancouver

Walker HM, Stone D, Ingham T, Vaughan S, Cain M, Jones RL et al. Night-time measurements of HOx during the RONOCO project and analysis of the sources of HO2. Atmospheric Chemistry and Physics. 2015 Jul 23;15(14):8179-8200. doi: 10.5194/acp-15-8179-2015

Author

Walker, H. M. ; Stone, D. ; Ingham, T. et al. / Night-time measurements of HOx during the RONOCO project and analysis of the sources of HO2. In: Atmospheric Chemistry and Physics. 2015 ; Vol. 15, No. 14. pp. 8179-8200.

Bibtex

@article{d92c2745c100463f8195c496c3820542,
title = "Night-time measurements of HOx during the RONOCO project and analysis of the sources of HO2",
abstract = "Measurements of the radical species OH and HO2 were made using the fluorescence assay by gas expansion (FAGE) technique during a series of night-time and daytime flights over the UK in summer 2010 and winter 2011. OH was not detected above the instrument's 1σ limit of detection during any of the night-time flights or during the winter daytime flights, placing upper limits on [OH] of 1.8 × 106 molecule cm-3 and 6.4 × 105 molecule cm-3 for the summer and winter flights, respectively. HO2 reached a maximum concentration of 3.2 × 108 molecule cm-3 (13.6 pptv) during a night-time flight on 20 July 2010, when the highest concentrations of NO3 and O3 were also recorded. An analysis of the rates of reaction of OH, O3, and the NO3 radical with measured alkenes indicates that the summer night-time troposphere can be as important for the processing of volatile organic compounds (VOCs) as the winter daytime troposphere. An analysis of the instantaneous rate of production of HO2 from the reactions of O3 and NO3 with alkenes has shown that, on average, reactions of NO3 dominated the night-time production of HO2 during summer and reactions of O3 dominated the night-time HO2 production during winter.",
author = "Walker, {H. M.} and D. Stone and T. Ingham and S. Vaughan and M. Cain and Jones, {R. L.} and Kennedy, {O. J.} and M. McLeod and B. Ouyang and J. Pyle and S. Bauguitte and B. Bandy and G. Forster and Evans, {M. J.} and Hamilton, {J. F.} and Hopkins, {J. R.} and Lee, {J. D.} and Lewis, {A. C.} and Lidster, {R. T.} and S. Punjabi and Morgan, {W. T.} and Heard, {D. E.}",
year = "2015",
month = jul,
day = "23",
doi = "10.5194/acp-15-8179-2015",
language = "English",
volume = "15",
pages = "8179--8200",
journal = "Atmospheric Chemistry and Physics",
issn = "1680-7316",
publisher = "Copernicus GmbH (Copernicus Publications) on behalf of the European Geosciences Union (EGU)",
number = "14",

}

RIS

TY - JOUR

T1 - Night-time measurements of HOx during the RONOCO project and analysis of the sources of HO2

AU - Walker, H. M.

AU - Stone, D.

AU - Ingham, T.

AU - Vaughan, S.

AU - Cain, M.

AU - Jones, R. L.

AU - Kennedy, O. J.

AU - McLeod, M.

AU - Ouyang, B.

AU - Pyle, J.

AU - Bauguitte, S.

AU - Bandy, B.

AU - Forster, G.

AU - Evans, M. J.

AU - Hamilton, J. F.

AU - Hopkins, J. R.

AU - Lee, J. D.

AU - Lewis, A. C.

AU - Lidster, R. T.

AU - Punjabi, S.

AU - Morgan, W. T.

AU - Heard, D. E.

PY - 2015/7/23

Y1 - 2015/7/23

N2 - Measurements of the radical species OH and HO2 were made using the fluorescence assay by gas expansion (FAGE) technique during a series of night-time and daytime flights over the UK in summer 2010 and winter 2011. OH was not detected above the instrument's 1σ limit of detection during any of the night-time flights or during the winter daytime flights, placing upper limits on [OH] of 1.8 × 106 molecule cm-3 and 6.4 × 105 molecule cm-3 for the summer and winter flights, respectively. HO2 reached a maximum concentration of 3.2 × 108 molecule cm-3 (13.6 pptv) during a night-time flight on 20 July 2010, when the highest concentrations of NO3 and O3 were also recorded. An analysis of the rates of reaction of OH, O3, and the NO3 radical with measured alkenes indicates that the summer night-time troposphere can be as important for the processing of volatile organic compounds (VOCs) as the winter daytime troposphere. An analysis of the instantaneous rate of production of HO2 from the reactions of O3 and NO3 with alkenes has shown that, on average, reactions of NO3 dominated the night-time production of HO2 during summer and reactions of O3 dominated the night-time HO2 production during winter.

AB - Measurements of the radical species OH and HO2 were made using the fluorescence assay by gas expansion (FAGE) technique during a series of night-time and daytime flights over the UK in summer 2010 and winter 2011. OH was not detected above the instrument's 1σ limit of detection during any of the night-time flights or during the winter daytime flights, placing upper limits on [OH] of 1.8 × 106 molecule cm-3 and 6.4 × 105 molecule cm-3 for the summer and winter flights, respectively. HO2 reached a maximum concentration of 3.2 × 108 molecule cm-3 (13.6 pptv) during a night-time flight on 20 July 2010, when the highest concentrations of NO3 and O3 were also recorded. An analysis of the rates of reaction of OH, O3, and the NO3 radical with measured alkenes indicates that the summer night-time troposphere can be as important for the processing of volatile organic compounds (VOCs) as the winter daytime troposphere. An analysis of the instantaneous rate of production of HO2 from the reactions of O3 and NO3 with alkenes has shown that, on average, reactions of NO3 dominated the night-time production of HO2 during summer and reactions of O3 dominated the night-time HO2 production during winter.

U2 - 10.5194/acp-15-8179-2015

DO - 10.5194/acp-15-8179-2015

M3 - Journal article

VL - 15

SP - 8179

EP - 8200

JO - Atmospheric Chemistry and Physics

JF - Atmospheric Chemistry and Physics

SN - 1680-7316

IS - 14

ER -