| 滨海新区2014-06-22强对流天气过程分析 |
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| 引用本文： | 黄纯玺,孙晓磊,侯天宇,等.滨海新区2014-06-22强对流天气过程分析[J].气象与环境科学,2016,39(3):75-81. |
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| 作者姓名： | 黄纯玺 孙晓磊 侯天宇 等 |
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| 摘 要： | 依据常规高空、地面观测及雷达资料,对2014年6月22日滨海新区的强对流天气(短时强降水、冰雹)过程进行分析。结果表明:1)500 h Pa低涡位于40°N,滨海新区上游有冷空气侵入,并且700 h Pa和850 h Pa也有切变线存在,是滨海新区地区发生强对流天气的环流背景。2)对流层低层水汽充沛,探空CAPE、SWEAT等指数指示意义较好,存在较好的不稳定能量和弱的垂直风切变,尤其是地域性的海风过程提供了触发条件和底层水汽。3)雷达回波演变上可以清晰看到出流边界(阵风锋)和海风锋共同作用触发单体回波及单体发展、旺盛、消亡演变过程。该过程中,冰雹移动路径沿滨海新区地面辐合线(海风锋)呈东北—西南向移动,该路径是滨海新区的强对流天气常有的移动路径之一。
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| 关 键 词： | 低涡 出流边界 海风锋 冰雹 |
Analysis of Strong Convection Weather in Binhai New Area on June 22, 2014 |
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| Huang Chunxi,Sun Xiaolei,Hou Tianyu,et al.Analysis of Strong Convection Weather in Binhai New Area on June 22, 2014[J].Meteorological and Environmental Sciences,2016,39(3):75-81. |
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| Authors: | Huang Chunxi Sun Xiaolei Hou Tianyu |
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| Abstract: | Based on conventional surface observations, upper air observations and radar data, a strong convection weather (short heavy rainfall and hail) of Binhai New Area on June 22, 2014 were analyzed. The results showed as followed. 1)The weather background of strong convective were 500 hPa vortex located at 40°N, cold air intruded in the upstream of Binhai New Area and shear line existed at 700 hPa and 850 hPa. 2)Abundant water vapor was in the lower troposphere, sounding CAPE, SWEAT index bring good indicative significance, good unstable energy and weak vertical wind shear existed, and regional sea breeze process especially provided the trigger condition and the underlying water vapor. 3) From the radar echo, the birth, development, maturity, subduction of the cell which incurred by the outflow boundary (gust front) and sea-breeze front can be found. In this process, hail moved northeast to southwest along the surface convergence line(the sea-breeze front)upon the Binhai New Area and the path is the way which the strong convective weather moved along. |
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| Keywords: | vortex flow boundary sea-breeze front hail |
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