江西两次飑线对比分析
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摘要
本文利用NECP再分析资料(1°×1°)、自动站观测资料、雷达资料拼图等,对2014年7月12日—7月13日与10月30日两次飑线天气进行分析。结果表明:江西省500hPa上游均有高空低槽,槽后的冷平流与江西境内的暖平流相遇,从而触发对流天气,7月12日至7月13日为东北-西南向具有较大范围的高空槽影响,10月30日为短波槽影响。由于10月30日有冷空气介入,产生对流天气的时间较短,没有明显发展,以雷暴天气为主,而7月12日至7月13日飑线的发展高度较高,出现更明显的对流天气。
This paper used NECP reanalysis data, automatic station observation data, radar data puzzle and so on, the squall line weather of July 12-13 and October 30 were analyzed, 2014. The results show that there are high altitude trough in the upper reaches of Jiangxi Province in 500 hPa, the cold advection behind the trough meets the warm advection in Jiangxi, thus triggering the convective weather, but July 12-13 is a large-scale high-altitude trough in northeast-southwest direction, and the cold advection in the back of the trough meets the warm advection in Jiangxi Province. October 30 is the influence of short wave slot. Due to the intervention of cold air on 30 October, the time of convective weather was shorter.There is no obvious development, so the thunderstorm weather is the main, while on July 12-13, the development height of the pipeline line is high, and the more obvious convective weather appears.
This paper used NECP reanalysis data, automatic station observation data, radar data puzzle and so on, the squall line weather of July 12-13 and October 30 were analyzed, 2014. The results show that there are high altitude trough in the upper reaches of Jiangxi Province in 500 hPa, the cold advection behind the trough meets the warm advection in Jiangxi, thus triggering the convective weather, but July 12-13 is a large-scale high-altitude trough in northeast-southwest direction, and the cold advection in the back of the trough meets the warm advection in Jiangxi Province. October 30 is the influence of short wave slot. Due to the intervention of cold air on 30 October, the time of convective weather was shorter.There is no obvious development, so the thunderstorm weather is the main, while on July 12-13, the development height of the pipeline line is high, and the more obvious convective weather appears.
引文
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[3]张建军,王咏青,钟玮.飑线组织化过程对环境垂直风切变和水汽的响应[J].大气科学,2016(4):689-702.
[4]缪子青,何宏让,张云,等.一次飑线过程雷达回波特征及环境条件分析[J].气象科学,2016(1):71-79.