Photochemical trajectory modeling of ozone concentrations in Hong Kong

H.R. Cheng; Sam Saunders; H. Guo; P.K.K. Louie; F. Jiang

doi:10.1016/j.envpol.2013.04.039

Photochemical trajectory modeling of ozone concentrations in Hong Kong

H.R. Cheng, Sam Saunders, H. Guo, P.K.K. Louie, F. Jiang

School of Molecular Sciences

Research output: Contribution to journal › Article › peer-review

27 Citations (Scopus)

Abstract

In this study, tropical cyclones over the East and South China Seas were found to be the most predominant weather conditions associated with the occurrence of high ozone (O3) episodes in Hong Kong in 2005-2009. A photochemical trajectory model coupled with Master Chemical Mechanism (MCM) was adapted to simulate the O3 concentrations during two O3 pollution episodes. The results agreed well with the observed data. A representative backward air mass trajectory was used to determine the contribution of each volatile organic compound (VOC) to the O3 levels. After taking into account both reactivity and mass emission of each VOC, 10 species were found to be the key O3 precursors in Hong Kong. Further analysis identified solvent related products accounting for 70% of the modeled O3 concentration in Hong Kong. The results highlight the importance of considering together reactivity and source sector emissions in developing targeted VOC reduction for O3 abatement strategies. © 2013 Elsevier Ltd. All rights reserved.

Original language	English
Pages (from-to)	101-110
Journal	Environmental Pollution
Volume	180
DOIs	https://doi.org/10.1016/j.envpol.2013.04.039
Publication status	Published - 2013

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title = "Photochemical trajectory modeling of ozone concentrations in Hong Kong",

abstract = "In this study, tropical cyclones over the East and South China Seas were found to be the most predominant weather conditions associated with the occurrence of high ozone (O3) episodes in Hong Kong in 2005-2009. A photochemical trajectory model coupled with Master Chemical Mechanism (MCM) was adapted to simulate the O3 concentrations during two O3 pollution episodes. The results agreed well with the observed data. A representative backward air mass trajectory was used to determine the contribution of each volatile organic compound (VOC) to the O3 levels. After taking into account both reactivity and mass emission of each VOC, 10 species were found to be the key O3 precursors in Hong Kong. Further analysis identified solvent related products accounting for 70% of the modeled O3 concentration in Hong Kong. The results highlight the importance of considering together reactivity and source sector emissions in developing targeted VOC reduction for O3 abatement strategies. {\textcopyright} 2013 Elsevier Ltd. All rights reserved.",

author = "H.R. Cheng and Sam Saunders and H. Guo and P.K.K. Louie and F. Jiang",

year = "2013",

doi = "10.1016/j.envpol.2013.04.039",

language = "English",

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journal = "Environmental Pollution",

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T1 - Photochemical trajectory modeling of ozone concentrations in Hong Kong

AU - Cheng, H.R.

AU - Saunders, Sam

AU - Guo, H.

AU - Louie, P.K.K.

AU - Jiang, F.

PY - 2013

Y1 - 2013

N2 - In this study, tropical cyclones over the East and South China Seas were found to be the most predominant weather conditions associated with the occurrence of high ozone (O3) episodes in Hong Kong in 2005-2009. A photochemical trajectory model coupled with Master Chemical Mechanism (MCM) was adapted to simulate the O3 concentrations during two O3 pollution episodes. The results agreed well with the observed data. A representative backward air mass trajectory was used to determine the contribution of each volatile organic compound (VOC) to the O3 levels. After taking into account both reactivity and mass emission of each VOC, 10 species were found to be the key O3 precursors in Hong Kong. Further analysis identified solvent related products accounting for 70% of the modeled O3 concentration in Hong Kong. The results highlight the importance of considering together reactivity and source sector emissions in developing targeted VOC reduction for O3 abatement strategies. © 2013 Elsevier Ltd. All rights reserved.

AB - In this study, tropical cyclones over the East and South China Seas were found to be the most predominant weather conditions associated with the occurrence of high ozone (O3) episodes in Hong Kong in 2005-2009. A photochemical trajectory model coupled with Master Chemical Mechanism (MCM) was adapted to simulate the O3 concentrations during two O3 pollution episodes. The results agreed well with the observed data. A representative backward air mass trajectory was used to determine the contribution of each volatile organic compound (VOC) to the O3 levels. After taking into account both reactivity and mass emission of each VOC, 10 species were found to be the key O3 precursors in Hong Kong. Further analysis identified solvent related products accounting for 70% of the modeled O3 concentration in Hong Kong. The results highlight the importance of considering together reactivity and source sector emissions in developing targeted VOC reduction for O3 abatement strategies. © 2013 Elsevier Ltd. All rights reserved.

U2 - 10.1016/j.envpol.2013.04.039

DO - 10.1016/j.envpol.2013.04.039

M3 - Article

C2 - 23747818

SN - 0269-7491

VL - 180

SP - 101

EP - 110

JO - Environmental Pollution

JF - Environmental Pollution

ER -

Photochemical trajectory modeling of ozone concentrations in Hong Kong

Abstract

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