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Reaction between CH3O2 and BrO Radicals: a new source of upper troposphere lower stratosphere hydroxyl radicals

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Reaction between CH3O2 and BrO Radicals: a new source of upper troposphere lower stratosphere hydroxyl radicals. / Shallcross, Dudley E.; Leather, Kimberley E.; Bacak, Asan et al.
In: Journal of Physical Chemistry A, Vol. 119, No. 19, 14.05.2015, p. 4618-4632.

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

Harvard

Shallcross, DE, Leather, KE, Bacak, A, Xiao, P, Lee, EPF, Ng, M, Mok, DKW, Dyke, JM, Hossaini, R, Chipperfield, MP, Khan, MAH & Percival, CJ 2015, 'Reaction between CH3O2 and BrO Radicals: a new source of upper troposphere lower stratosphere hydroxyl radicals', Journal of Physical Chemistry A, vol. 119, no. 19, pp. 4618-4632. https://doi.org/10.1021/jp5108203

APA

Shallcross, D. E., Leather, K. E., Bacak, A., Xiao, P., Lee, E. P. F., Ng, M., Mok, D. K. W., Dyke, J. M., Hossaini, R., Chipperfield, M. P., Khan, M. A. H., & Percival, C. J. (2015). Reaction between CH3O2 and BrO Radicals: a new source of upper troposphere lower stratosphere hydroxyl radicals. Journal of Physical Chemistry A, 119(19), 4618-4632. https://doi.org/10.1021/jp5108203

Vancouver

Shallcross DE, Leather KE, Bacak A, Xiao P, Lee EPF, Ng M et al. Reaction between CH3O2 and BrO Radicals: a new source of upper troposphere lower stratosphere hydroxyl radicals. Journal of Physical Chemistry A. 2015 May 14;119(19):4618-4632. Epub 2015 Mar 13. doi: 10.1021/jp5108203

Author

Shallcross, Dudley E. ; Leather, Kimberley E. ; Bacak, Asan et al. / Reaction between CH3O2 and BrO Radicals : a new source of upper troposphere lower stratosphere hydroxyl radicals. In: Journal of Physical Chemistry A. 2015 ; Vol. 119, No. 19. pp. 4618-4632.

Bibtex

@article{bbeccbd2a64b4a8d9760fabe6d2bfac6,
title = "Reaction between CH3O2 and BrO Radicals: a new source of upper troposphere lower stratosphere hydroxyl radicals",
abstract = "Over the last two decades it has emerged that measured hydroxyl radical levels in the upper troposphere are often underestimated by models, leading to the assertion that there are missing sources. Here we report laboratory studies of the kinetics and products of the reaction between CH3O2 and BrO radicals that shows that this could be an important new source of hydroxyl radicals:BrO + CH3O2 --> products (1). The temperature dependent value in Arrhenius form of k(T) is k(1) = (2.42(-0.72)(+1.02)) X 10(-14) exp[(1617 +/- 94)/T] cm(3) molecule(-1) s(-1). In addition, CH2OO and HOBr are believed to he the major products. Global model results suggest that the decomposition of H2COO to form OH could lead to an enhancement in OH of up to 20% in mid-latitudes in the upper troposphere and in the lower stratosphere enhancements OH of 2-9% are inferred from model integrations. In addition, reaction 1 aids conversion of BrO to HOBr and slows polar ozone loss in the lower stratosphere.",
keywords = "IONIZATION MASS-SPECTROMETRY, INTERMEDIATES CRI MECHANISM, ACTIVE THERMOCHEMICAL TABLES, GAS-PHASE, PRESSURE-DEPENDENCE, OZONE PHOTOCHEMISTRY, BROMINE MONOXIDE, BOUNDARY-LAYER, TRACE GAS, AB-INITIO",
author = "Shallcross, {Dudley E.} and Leather, {Kimberley E.} and Asan Bacak and Ping Xiao and Lee, {Edmond P. F.} and Maggie Ng and Mok, {Daniel K. W.} and Dyke, {John M.} and Ryan Hossaini and Chipperfield, {Martyn P.} and Khan, {M. Anwar H.} and Percival, {Carl J.}",
year = "2015",
month = may,
day = "14",
doi = "10.1021/jp5108203",
language = "English",
volume = "119",
pages = "4618--4632",
journal = "Journal of Physical Chemistry A",
issn = "1089-5639",
publisher = "AMER CHEMICAL SOC",
number = "19",

}

RIS

TY - JOUR

T1 - Reaction between CH3O2 and BrO Radicals

T2 - a new source of upper troposphere lower stratosphere hydroxyl radicals

AU - Shallcross, Dudley E.

AU - Leather, Kimberley E.

AU - Bacak, Asan

AU - Xiao, Ping

AU - Lee, Edmond P. F.

AU - Ng, Maggie

AU - Mok, Daniel K. W.

AU - Dyke, John M.

AU - Hossaini, Ryan

AU - Chipperfield, Martyn P.

AU - Khan, M. Anwar H.

AU - Percival, Carl J.

PY - 2015/5/14

Y1 - 2015/5/14

N2 - Over the last two decades it has emerged that measured hydroxyl radical levels in the upper troposphere are often underestimated by models, leading to the assertion that there are missing sources. Here we report laboratory studies of the kinetics and products of the reaction between CH3O2 and BrO radicals that shows that this could be an important new source of hydroxyl radicals:BrO + CH3O2 --> products (1). The temperature dependent value in Arrhenius form of k(T) is k(1) = (2.42(-0.72)(+1.02)) X 10(-14) exp[(1617 +/- 94)/T] cm(3) molecule(-1) s(-1). In addition, CH2OO and HOBr are believed to he the major products. Global model results suggest that the decomposition of H2COO to form OH could lead to an enhancement in OH of up to 20% in mid-latitudes in the upper troposphere and in the lower stratosphere enhancements OH of 2-9% are inferred from model integrations. In addition, reaction 1 aids conversion of BrO to HOBr and slows polar ozone loss in the lower stratosphere.

AB - Over the last two decades it has emerged that measured hydroxyl radical levels in the upper troposphere are often underestimated by models, leading to the assertion that there are missing sources. Here we report laboratory studies of the kinetics and products of the reaction between CH3O2 and BrO radicals that shows that this could be an important new source of hydroxyl radicals:BrO + CH3O2 --> products (1). The temperature dependent value in Arrhenius form of k(T) is k(1) = (2.42(-0.72)(+1.02)) X 10(-14) exp[(1617 +/- 94)/T] cm(3) molecule(-1) s(-1). In addition, CH2OO and HOBr are believed to he the major products. Global model results suggest that the decomposition of H2COO to form OH could lead to an enhancement in OH of up to 20% in mid-latitudes in the upper troposphere and in the lower stratosphere enhancements OH of 2-9% are inferred from model integrations. In addition, reaction 1 aids conversion of BrO to HOBr and slows polar ozone loss in the lower stratosphere.

KW - IONIZATION MASS-SPECTROMETRY

KW - INTERMEDIATES CRI MECHANISM

KW - ACTIVE THERMOCHEMICAL TABLES

KW - GAS-PHASE

KW - PRESSURE-DEPENDENCE

KW - OZONE PHOTOCHEMISTRY

KW - BROMINE MONOXIDE

KW - BOUNDARY-LAYER

KW - TRACE GAS

KW - AB-INITIO

U2 - 10.1021/jp5108203

DO - 10.1021/jp5108203

M3 - Journal article

VL - 119

SP - 4618

EP - 4632

JO - Journal of Physical Chemistry A

JF - Journal of Physical Chemistry A

SN - 1089-5639

IS - 19

ER -