鹰潭一次局地对流性大暴雨过程的成因分析

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Abstract In order to do a good job in the forecast and early warning of heavy rain,this paper uses FNL1°×1°,MICAPS,encrypted automatic weather station,radar echo and other observation data to analyze the local heavy rain process in Yingtan on July 2,2020.The results show that:1) the high specific humidity area of 925 hPa and the surface convergence line are very conducive to the occurrence of convective rainstorm in Yingtan.The good water vapor transport and accumulation,the deep upward movement formed by the coupling of the high and low level jets,and the strong convective instability at the low level provide good water vapor,dynamic and thermal conditions for the convective heavy rain in Yingtan.2) The location of heavy precipitation corresponds well with the location of surface cold outflow.The heavy precipitation mainly occurs in the front of the surface convergence line formed by cold outflow and ambient wind and the surface warm zone.3)The heavy rainstorm is mainly affected by the continuous influence of multiple strong echo systems.The echo has obvious development and strengthening in Yingtan,which is mainly due to the northerly airflow formed by the cold outflow,the southwesterly airflow and the easterly prevailing wind direction caused by the eastern corridor.The above results provide an analysis basis for the forecast and early warning service of Yingtan heavy rain.

Key words： heavy rain echo system cold outflow convergence line

Received: 17 March 2023

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	Yuan Dongmei
	Ma Zhongyuan
	Zheng Jiangwei
	Yang Jie

Cite this article:

Yuan Dongmei,Ma Zhongyuan,Zheng Jiangwei等. Cause analysis of a local convective heavy rain process in Yingtan[J]. Meteorological Hydrological and Marine Instrument, 2023, 40(3): 8-11.

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http://www.qxswhy.com/EN/ OR http://www.qxswhy.com/EN/Y2023/V40/I3/8

[1]	廖移山,冯新,石燕,等.2008年“7.22”襄樊特大暴雨的天气学机理分析及地形的影响[J].气象学报,2011,69(6):945-955.
[2]	杨秀庄,牟克林.贵州2011年9月17日一次中β尺度局地特大暴雨特征分析[J].贵州气象,2012,36(4):6-9.
[3]	何立富,陈涛,周庆亮,等.北京“7.10”暴雨β-中尺度对流系统分析[J].应用气象学报,2007(5):655-665.
[4]	张晓茹,陈豫英,姚姗姗,等.贺兰山东麓一次局地强对流暴雨的中尺度特征[J].气象,2022,48(7):801-812.
[5]	邹德全,邹承立,熊凯,等.近36 a遵义市暴雨洪涝灾害变化特征及成因分析[J].中低纬山地气象,2022,46(5):76-79.
[6]	邱双.雅安一次极端强降水的超级单体风暴特征及成因分析[J].中低纬山地气象,2022,46(2):55-62.
[7]	周林,乔琪,王君军.2017年6月12日贵阳地区暴雨成因分析[J].中低纬山地气象,2018,42(1):48-56.
[8]	曾妮,方鹏,李启芬,等.安顺市大暴雨的时空分布特征与物理量分析[J].中低纬山地气象,2020,44(06):66-70.
[9]	付世军,竹利,李晓容.动力相似法在一次大暴雨过程中的应用[J].中低纬山地气象,2018,42(3):68-72.