Surface Ozone Pattern in Hong Kong
Open Access
- 1 October 1998
- journal article
- Published by American Meteorological Society in Journal of Applied Meteorology and Climatology
- Vol. 37 (10) , 1153-1165
- https://doi.org/10.1175/1520-0450(1998)037<1153:sopihk>2.0.co;2
Abstract
Surface ozone (O3) and its precursors in rural and urban areas of Hong Kong are analyzed through the seasonal, temporal, and spatial variation patterns. The seasonal O3 shows a unique pattern with a major peak in autumn and a trough in summer. The spring and winter seasons are the transition periods with a relatively small peak in spring. The seasonal alternation of the prevailing oceanic and continental air masses, plus the climate system associated with the Asian monsoon system, are the governing factors for the temporal O3 pattern in Hong Kong. The O3 imported by these air masses is found to be the dominating factor for the fluctuation of ambient O3 in Hong Kong. The aged air masses associated with the continental outflow from China carry with them anthropogenic air pollutants emitted from the blooming industrial and urban neighborhoods north of Hong Kong in Guangdong Province, China. Under favorable meteorological conditions for photochemical O3 formation in southeast China, the O3 level reac... Abstract Surface ozone (O3) and its precursors in rural and urban areas of Hong Kong are analyzed through the seasonal, temporal, and spatial variation patterns. The seasonal O3 shows a unique pattern with a major peak in autumn and a trough in summer. The spring and winter seasons are the transition periods with a relatively small peak in spring. The seasonal alternation of the prevailing oceanic and continental air masses, plus the climate system associated with the Asian monsoon system, are the governing factors for the temporal O3 pattern in Hong Kong. The O3 imported by these air masses is found to be the dominating factor for the fluctuation of ambient O3 in Hong Kong. The aged air masses associated with the continental outflow from China carry with them anthropogenic air pollutants emitted from the blooming industrial and urban neighborhoods north of Hong Kong in Guangdong Province, China. Under favorable meteorological conditions for photochemical O3 formation in southeast China, the O3 level reac...Keywords
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