Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/23156
Title: Impacts of the East Asian monsoon on lower tropospheric ozone over coastal South China
Authors: Zhou, D
Ding, A
Mao, H
Fu, C
Wang, T 
Chan, LY
Ding, K
Zhang, Y
Liu, J
Lu, A
Hao, N
Keywords: Asian monsoon
Climatology
Interannual variability
Tropospheric ozone
Issue Date: 2013
Publisher: Institute of Physics Publishing
Source: Environmental research letters, 2013, v. 8, no. 4, 044011 How to cite?
Journal: Environmental research letters 
Abstract: The impact of the East Asian monsoon (EAM) on climatology and interannual variability of tropospheric ozone (O3) over the coastal South China was investigated by analyzing 11 years of ozonesonde data over Hong Kong with the aid of Lagrangian dispersion modeling of carbon monoxide and calculation of an EAM index. It was found that the seasonal cycle of O3 in the lower troposphere is highly related to the EAM over the study region. Ozone enhancements in the free troposphere are associated with the monsoon-induced transport of pollutants of continental anthropogenic and biomass burning origins. Lower tropospheric O3 levels showed high interannual variability, with an annual averaged amplitude up to 61% of averaged concentrations in the boundary layer (0-1 km altitudes) and 49% below 3 km altitude. In spring and autumn, the interannual variability in boundary layer O3 levels was predominately influenced by the EAM intensity, with high O3 mixing ratios associated with northeasterly circulation anomalies.
URI: http://hdl.handle.net/10397/23156
ISSN: 1748-9318
EISSN: 1748-9326
DOI: 10.1088/1748-9326/8/4/044011
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