“2013.3.19”飑线天气过程分析

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Abstract By using routine synoptic data,physical quantity,Web GIS radar mosaic products,and precipitation elements from AWS,adopting methods of mesoscale analysis and feature extraction,the squall line process caused large scale hail storm on 19-20th March 2013 in Jiangxi is analyzed.The results show that the interaction of weather system leads to this squall line process.The large unstable energy,500 hPa dry layer,severe vertical wind shear in low level,wind direction veering with height,low 0 ℃ and -20 ℃ heights cause the hail storm.The reasons why there is no fresh gale are heave thermal inversion layer,low range of temperature between surface and upper air.Thin wet layer,severe vertical wind shear in middle level,unusual dry middle layer and high cape decrease the quantity of heave precipitation.

Key words： hail squall line vertical wind shear range of temperature between surface and upper air unusual dry cold layer

Received: 09 May 2014

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	Articles by authors
	Liu Shouyu
	Ma Zhongyuan
	Chen Baofa
	Lu Qiufang
	Su Limin
	Wang Xuan

Cite this article:

Liu Shouyu,Ma Zhongyuan,Chen Baofa等. Analysis of squall line process on 19th March 2013[J]. Meteorological Hydrological and Marine Instrument, 2014, 31(3): 28-32.

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http://www.qxswhy.com/EN/ OR http://www.qxswhy.com/EN/Y2014/V31/I3/28

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