Case Study of a Morning Convective Rainfall Event over Southwestern Taiwan in the Mei-Yu Season under Weak Synoptic Conditions

Journal of the Meteorological Society of Japan

George Tai-Jen CHEN¹  Chung-Chieh WANG²  Chi-Hong NGAI³ 

[1] Department of Atmospheric Sciences, National Taiwan University, Taiwan;Department of Earth Sciences, National Taiwan Normal University, Taiwan;Institute for Space-Earth Environmental Research, Nagoya University, Nagoya, Japan

关键词: nocturnal convection;    land breeze;    topographic effect;    cloud resolving simulation;    mei-yu season;    Taiwan;   

DOI  :  10.2151/jmsj.2018-051

学科分类：大气科学

来源: Meteorological Society of Japan

【 摘 要 】

 There exists a minor, secondary early-morning peak in mei-yu rainfall along the western coast of Taiwan, and this work investigates one such event on June 8, 2012 in southwestern Taiwan under weak synoptic conditions through both observational analysis and numerical modeling, with the main focus on the triggering mechanism of the convection. Observations indicate that the convection developed offshore around midnight near the leading edge of a moderate low-level southwesterly wind surge of 15-20 kts and intensified and moved onshore to produce rainfall. The cold outflow from precipitation also led to new cell development at the backside, and the rain thus lasted for several hours until approximately 07:00 LST.

【 授权许可】

Unknown