摘要
利用常规高空、地面观测资料和探空、雷达资料,对2001-2010年5-9月河南区域雷雨大风和区域冰雹天气发生、发展的环境条件进行了中尺度天气综合分析和物理量要素分析,揭示了河南省区域雷雨大风、冰雹及大风冰雹三类强对流天气的一些特征和规律。(1)归纳出河南强对流天气的典型特征,建立了东北低涡槽后型、华北低涡型、低槽型和副热带高压边缘西南气流型4种中尺度天气分析概念模型,给出了各流型下强天气分析的关键内容和量化参考指标。(2)在环流分型的基础上,从强对流天气发生的热力、动力及水汽等基本条件出发,讨论了不同天气形势、不同类别强对流天气、不同物理参数之间的有机联系和显著区别。通过分析寻找雷雨大风、冰雹及大风冰雹三类强对流天气的敏感物理量参数和要素特征,总结出各类强对流天气的物理量要素指标和阈值,为今后预报预警雷雨大风、冰雹等分类强对流天气提供参考。(3)分析了强天气个例雷达回波,简要归纳出各流型下强对流天气雷达回波系统的发生、发展和移动等演变特点。
Using the conventional high, surface observations, sounding and radar data, the meso-scale weather comprehensive analysis and the physical parameter analysis, the occurring and developing environ- mental conditions of thunderstorm wind and regional hail in Henan region from May to September of 2001 --2010, and the characteristics and regular patterns of three types of severe convective weather in Henan Province were studied. （1） The typical features of severe convective weather in henna are summed four conceptual models of mesoscale weather analyses are established, that is, northeast vortex at the back of vortex trough, north vortex, low trough and the southwest airflow on the edge of the subtropical high, the key elements and the quantitative reference indices of severe weather analyses under different flow pat- terns are provided. （2） On the basis of circulation classification, the organic relation and significant differ- ences of different weather situations, different types of severe convective weather and different physical pa- rameters are discussed from the thermal, dynamic, water vapour and other basic conditions of severe con- vective weather. The sensitive physical parameters and element characteristics are found by analysing three types of severe convective weather thunderstorm winds, hail and gale hail, the indicators and thresholds of physical elements of the different severe convective weathers are summed up, which provide reference for forecasting and early warning for the future thunderstorms, hail and other severe convective weather. （3） The evolution features of occurrence, development, movement and so on about the severe convective weather radar echo systems in different flow patterns are briefly concluded by analysing radar echoes of the severe weather cases.
出处
《高原气象》
CSCD
北大核心
2013年第5期1492-1502,共11页
Plateau Meteorology
基金
2009年度公益性行业(气象)科研专项(GYHY20090603)
河南省科技厅项目(112102310033)
中国气象局关键技术集成项目(CMAGJ2013M30)
河南省气象局项目(Z201201)
关键词
强对流天气
流型识别
物理量
分类特征
Severe convective weather
Flow pattern identification
Physical value
Classification feature
