By the same authors

From the same journal

From the same journal

Enhanced ozone loss by active inorganic bromine chemistry in the tropical troposphere

Research output: Contribution to journalArticle

Standard

Enhanced ozone loss by active inorganic bromine chemistry in the tropical troposphere. / Breton, Michael Le; Bannan, Thomas J.; Shallcross, Dudley E.; Khan, M. Anwar; Evans, Mathew J.; Lee, James; Lidster, Richard; Andrews, Stephen; Carpenter, Lucy J.; Schmidt, Johan; Jacob, Daniel; Harris, Neil R.P.; Bauguitte, Stephane; Gallagher, Martin; Bacak, Asan; Leather, Kimberley E.; Percival, Carl J.

In: Atmospheric Environment, 03.02.2017, p. 1-20.

Research output: Contribution to journalArticle

Harvard

Breton, ML, Bannan, TJ, Shallcross, DE, Khan, MA, Evans, MJ, Lee, J, Lidster, R, Andrews, S, Carpenter, LJ, Schmidt, J, Jacob, D, Harris, NRP, Bauguitte, S, Gallagher, M, Bacak, A, Leather, KE & Percival, CJ 2017, 'Enhanced ozone loss by active inorganic bromine chemistry in the tropical troposphere', Atmospheric Environment, pp. 1-20. https://doi.org/10.1016/j.atmosenv.2017.02.003

APA

Breton, M. L., Bannan, T. J., Shallcross, D. E., Khan, M. A., Evans, M. J., Lee, J., ... Percival, C. J. (2017). Enhanced ozone loss by active inorganic bromine chemistry in the tropical troposphere. Atmospheric Environment, 1-20. https://doi.org/10.1016/j.atmosenv.2017.02.003

Vancouver

Breton ML, Bannan TJ, Shallcross DE, Khan MA, Evans MJ, Lee J et al. Enhanced ozone loss by active inorganic bromine chemistry in the tropical troposphere. Atmospheric Environment. 2017 Feb 3;1-20. https://doi.org/10.1016/j.atmosenv.2017.02.003

Author

Breton, Michael Le ; Bannan, Thomas J. ; Shallcross, Dudley E. ; Khan, M. Anwar ; Evans, Mathew J. ; Lee, James ; Lidster, Richard ; Andrews, Stephen ; Carpenter, Lucy J. ; Schmidt, Johan ; Jacob, Daniel ; Harris, Neil R.P. ; Bauguitte, Stephane ; Gallagher, Martin ; Bacak, Asan ; Leather, Kimberley E. ; Percival, Carl J. / Enhanced ozone loss by active inorganic bromine chemistry in the tropical troposphere. In: Atmospheric Environment. 2017 ; pp. 1-20.

Bibtex - Download

@article{62e055efe9114a598bbb4039e0e09fdd,
title = "Enhanced ozone loss by active inorganic bromine chemistry in the tropical troposphere",
abstract = "Abstract Bromine chemistry, particularly in the tropics, has been suggested to play an important role in tropospheric ozone loss (Theys et al., 2011) although a lack of measurements of active bromine species impedes a quantitative understanding of its impacts. Recent modelling and measurements of bromine monoxide (BrO) by Wang et al. (2015) have shown current models under predict BrO concentrations over the Pacific Ocean and allude to a missing source of BrO. Here, we present the first simultaneous aircraft measurements of atmospheric bromine monoxide, BrO (a radical that along with atomic Br catalytically destroys ozone) and the inorganic Br precursor compounds HOBr, BrCl and Br2 over the Western Pacific Ocean from 0.5 to 7 km. The presence of 0.17-€“1.64 pptv BrO and 3.6-8 pptv total inorganic Br from these four species throughout the troposphere causes 10-20{\%} of total ozone loss, and confirms the importance of bromine chemistry in the tropical troposphere; contributing to a 6 ppb decrease in ozone levels due to halogen chemistry. Observations are compared with a global chemical transport model and find that the observed high levels of BrO, BrCl and HOBr can be reconciled by active multiphase oxidation of halide (Br- and Cl-ˆ’) by HOBr and ozone in cloud droplets and aerosols. Measurements indicate that 99{\%} of the instantaneous free Br in the troposphere up to 8 km originates from inorganic halogen photolysis rather than from photolysis of organobromine species.",
keywords = "Troposphere",
author = "Breton, {Michael Le} and Bannan, {Thomas J.} and Shallcross, {Dudley E.} and Khan, {M. Anwar} and Evans, {Mathew J.} and James Lee and Richard Lidster and Stephen Andrews and Carpenter, {Lucy J.} and Johan Schmidt and Daniel Jacob and Harris, {Neil R.P.} and Stephane Bauguitte and Martin Gallagher and Asan Bacak and Leather, {Kimberley E.} and Percival, {Carl J.}",
year = "2017",
month = "2",
day = "3",
doi = "10.1016/j.atmosenv.2017.02.003",
language = "English",
pages = "1--20",
journal = "Atmospheric Environment",
issn = "1352-2310",
publisher = "Elsevier Limited",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Enhanced ozone loss by active inorganic bromine chemistry in the tropical troposphere

AU - Breton, Michael Le

AU - Bannan, Thomas J.

AU - Shallcross, Dudley E.

AU - Khan, M. Anwar

AU - Evans, Mathew J.

AU - Lee, James

AU - Lidster, Richard

AU - Andrews, Stephen

AU - Carpenter, Lucy J.

AU - Schmidt, Johan

AU - Jacob, Daniel

AU - Harris, Neil R.P.

AU - Bauguitte, Stephane

AU - Gallagher, Martin

AU - Bacak, Asan

AU - Leather, Kimberley E.

AU - Percival, Carl J.

PY - 2017/2/3

Y1 - 2017/2/3

N2 - Abstract Bromine chemistry, particularly in the tropics, has been suggested to play an important role in tropospheric ozone loss (Theys et al., 2011) although a lack of measurements of active bromine species impedes a quantitative understanding of its impacts. Recent modelling and measurements of bromine monoxide (BrO) by Wang et al. (2015) have shown current models under predict BrO concentrations over the Pacific Ocean and allude to a missing source of BrO. Here, we present the first simultaneous aircraft measurements of atmospheric bromine monoxide, BrO (a radical that along with atomic Br catalytically destroys ozone) and the inorganic Br precursor compounds HOBr, BrCl and Br2 over the Western Pacific Ocean from 0.5 to 7 km. The presence of 0.17-€“1.64 pptv BrO and 3.6-8 pptv total inorganic Br from these four species throughout the troposphere causes 10-20% of total ozone loss, and confirms the importance of bromine chemistry in the tropical troposphere; contributing to a 6 ppb decrease in ozone levels due to halogen chemistry. Observations are compared with a global chemical transport model and find that the observed high levels of BrO, BrCl and HOBr can be reconciled by active multiphase oxidation of halide (Br- and Cl-ˆ’) by HOBr and ozone in cloud droplets and aerosols. Measurements indicate that 99% of the instantaneous free Br in the troposphere up to 8 km originates from inorganic halogen photolysis rather than from photolysis of organobromine species.

AB - Abstract Bromine chemistry, particularly in the tropics, has been suggested to play an important role in tropospheric ozone loss (Theys et al., 2011) although a lack of measurements of active bromine species impedes a quantitative understanding of its impacts. Recent modelling and measurements of bromine monoxide (BrO) by Wang et al. (2015) have shown current models under predict BrO concentrations over the Pacific Ocean and allude to a missing source of BrO. Here, we present the first simultaneous aircraft measurements of atmospheric bromine monoxide, BrO (a radical that along with atomic Br catalytically destroys ozone) and the inorganic Br precursor compounds HOBr, BrCl and Br2 over the Western Pacific Ocean from 0.5 to 7 km. The presence of 0.17-€“1.64 pptv BrO and 3.6-8 pptv total inorganic Br from these four species throughout the troposphere causes 10-20% of total ozone loss, and confirms the importance of bromine chemistry in the tropical troposphere; contributing to a 6 ppb decrease in ozone levels due to halogen chemistry. Observations are compared with a global chemical transport model and find that the observed high levels of BrO, BrCl and HOBr can be reconciled by active multiphase oxidation of halide (Br- and Cl-ˆ’) by HOBr and ozone in cloud droplets and aerosols. Measurements indicate that 99% of the instantaneous free Br in the troposphere up to 8 km originates from inorganic halogen photolysis rather than from photolysis of organobromine species.

KW - Troposphere

U2 - 10.1016/j.atmosenv.2017.02.003

DO - 10.1016/j.atmosenv.2017.02.003

M3 - Article

SP - 1

EP - 20

JO - Atmospheric Environment

T2 - Atmospheric Environment

JF - Atmospheric Environment

SN - 1352-2310

ER -