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Title

Impact of Afternoon Thunderstorms on the Land-Sea Breeze in the Taipei Basin during Summer: An Experiment*.

Authors

Chen, Tsing-Chang; Yen, Ming-Cheng; Tsay, Jenq-Dar; Liao, Chi-Chang; Takle, Eugene S.

Abstract

Environmental conditions for the roughly three million people living in the Taipei basin of Taiwan are greatly affected by the land-sea breeze and afternoon thunderstorm activities. A new perspective on the land-sea breeze life cycle and how it is affected by afternoon thunderstorm activity in the Taipei basin during the dry season is provided. During the summer monsoon break-revival phase, about 75% of rainfall in the Taipei basin is produced by afternoon thunderstorms triggered by sea-breeze interactions with the mountains to the south of this basin. Because the basic characteristics of the land-sea breeze and the changes it undergoes through the influence of afternoon thunderstorms have not been comprehensively analyzed/documented, a mini-field experiment was conducted during the summers of 2004 and 2005 to explore these aspects of the land-sea breeze in this basin. Thunderstorm rainfall is found to change not only the basin's land-sea-breeze life cycle, but also its ventilation mechanism. On the nonthunderstorm day, the sea breeze supplies the open-sea fresh air for about 8 h during the daytime, but the land breeze persists on the thunderstorm day from afternoon to the next morning, acting to sweep polluted urban air out of the basin.

Subjects

THUNDERSTORMS; LAND breeze; SEA breeze; AIR quality research; MUNICIPAL water supply

Publication

Journal of Applied Meteorology & Climatology, 2014, Vol 53, Issue 7, p1714

ISSN

1558-8424

Publication type

Academic Journal

DOI

10.1175/JAMC-D-13-098.1

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