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南海台风登陆粤东—闽南引发漳州大暴雨的特征和概念模型
杨德南,吴建成,洪晓湘,杨锡琼,陈锦鹏,庄毅斌
0
(漳州市气象局,福建 漳州 363000)
摘要:
根据南海台风登陆粤东至闽南漳州大暴雨个例,归纳总结出3种概念模型:东高北槽型、东西两高型和东高西低型;分析3种概念模型环流特征表明,共同点是在台湾海峡中南部均存在低空偏南风急流,漳州暴雨区上空850 hPa以下是一个水汽通量强辐合区;200 hPa为强辐散区.不同点是东高西低型南风急流的强度和厚度最弱;东高北槽型有冷空气的相互作用.最大日雨量,东高北槽型最大,东高西低型最小.同时,计算了此类台风漳州地区水汽、动力、热力和不稳定条件等22个物理量指标及台风季气候平均态指标,为此类台风漳州大暴雨预报提供参考.
关键词:  海洋气象学  南海台风  大暴雨  合成分析  概念模型  中低空急流
DOI:10.3969/J.ISSN.2095-4972.2017.02.013
基金项目:中国气象局预报员专项资助项目(CMAYBY2015-034)
Severe rainfall characteristics and conceptual models for Zhangzhou rainfall induced by the typhoon landing on the east of Guangdong and south of Fujian
YANG De-nan,WU Jian-cheng,HONG Xiao-xiang,YANG Xi-qiong,CHEN Jin-peng,ZHUANG Yi-bin
(Zhangzhou Meteorological Bureau, Zhangzhou 363000,China)
Abstract:
Based on the severe rainfall study in Zhangzhou caused by South China Sea typhoon landing on the east of Guangdong and the south of Fujian Provinces, 3 conceptual models are summarized. They are east highnorth trough type, eastwest double high type and east highwest low type. Analysis shows that they are commonly characterized by lowlevel southerly jet over the south of Taiwan Strait. The storm zone over Zhangzhou below 850hPa is the zone of strong vapor flux convergence and 200hPa is the zone of strong divergence. The difference is that the strength and thickness of the type of east highwest low southerly jet is the weakest. Besides, there is interaction of cold air in east highnorth trough type. The largest maximum daily rainfall is in the east highnorth trough type and the lowest is in east highwest low type. Besides, 22 physical parameters about water vapor, power, heat and other unstable conditions and the climate mean of typhoon in Zhangzhou area are calculated for information of heavy rainfall forecast.
Key words:  marine meteorology  typhoon in South China Sea  heavy rain  composite analysis  conceptual model  mid low level jet

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