Impact of Stratospheric Intrusions on Ozone Enhancement in the Lower Troposphere and Implication to Air Quality in Hong Kong and Other South China Regions

Zhao, Kaihui; Huang, Jianping; Wu, Yonghua; Yuan, Zibing; Wang, Yongwei; Li, Ying; Ma, Xiaodan; Liu, Xuehui; Ma, Wei; Wang, Ying; Zhang, Xiaoyan

doi:10.1029/2020jd033955

i

Impact of Stratospheric Intrusions on Ozone Enhancement in the Lower Troposphere and Implication to Air Quality in Hong Kong and Other South China Regions

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2021
By Zhao, Kaihui ; Huang, Jianping ; Wu, Yonghua ; ...

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Journal Title:

Journal of Geophysical Research: Atmospheres
Personal Author:

Zhao, Kaihui ; Huang, Jianping ; Wu, Yonghua ; Yuan, Zibing ; Wang, Yongwei ; Li, Ying ; Ma, Xiaodan ; Liu, Xuehui ; Ma, Wei ; Wang, Ying ; Zhang, Xiaoyan
NOAA Program & Office:

NWS (National Weather Service) ; CREST (Center for Earth System Sciences and Remote Sensing Technologies and Tech Center at City College of CUNY) ; EMC (Environmental Modelling Center) ; NCEP (National Centers for Environmental Prediction)
Description:

Stratospheric intrusions are an important source of ozone (O3) in the troposphere. In this study, 17 years of O3 sounding data from the Hong Kong Observatory with a weekly sampling frequency are analyzed to identify stratospheric intrusions and quantify their impact on O3 enhancement events in springtime from 2004 to 2020. 24.7% of O3 enhancement events are related to stratospheric intrusion whereas 31.7% of intrusions lead to the enhancement of O3 in the lower troposphere. Occurrences of stratospheric intrusion in springtime are closely related to tropopause folding and tropospheric convective activities in subtropical regions. The Weather Research and Forecasting model coupled with
Keywords:

Atmospheric Science Earth And Planetary Sciences (miscellaneous) Geophysics Space And Planetary Science Earth And Planetary Sciences (miscellaneous) Space And Planetary Science Earth And Planetary Sciences (miscellaneous) Space And Planetary Science
Source:

Journal of Geophysical Research: Atmospheres, 126(18)
DOI:

https://doi.org/10.1029/2020jd033955
ISSN:

2169-897X ; 2169-8996
Format:

PDF
Publisher:

American Geophysical Union (AGU)
Document Type:

Journal Article
Rights Information:

Other
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Library
Main Document Checksum:

urn:sha-512:f7f886e9ece4cf1dada501d4b3e2490ef6786b6620541157d3f463bab832bd7995b8648a0f06af8bb8afd82a0a48d16432b84c84e78854de633b1aa6af3dcdfe
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https://repository.library.noaa.gov/view/noaa/55206/noaa_55206_DS1.pdf
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[PDF - 2.98 MB ]

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