一次短时强对流天气的雷达产品特征分析

於慧玲; 杨宇

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一次短时强对流天气的雷达产品特征分析
於慧玲,杨宇
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(德宏州气象局云南芒市 678400)

摘要:

对2016年8月27日芒市出现的局地强对流雷达回波资料进行分析。分析结果表明：这是一次典型的对流单体和飑线系统汇合加强影响下产生的短时强对流天气,RCS剖面对流高度能直观反应出单点强对流的发展情况；飑线生成、发展壮大过程中,飑线产生的短时强降水和雷暴天气是逐步加强的,而在飑线系统与强对流风暴合并短时会导致雷暴天气加强和降雨量增大；飑线衰弱过程与雷达二次产品SS中的最大反射率所在位置高度的递减规律趋势符合,是飑线系统减弱的预报指标。这次强对流过程从天气形势上较难做出预报,希望从多普勒天气雷达产品资料分析中得出的预报特征能帮助今后能提前发布强对流天气预警。

关键词: 短时;强对流多普勒天气雷达;回波特征风暴结构产品(SS)

DOI：

投稿时间：2017-01-20修订日期：2018-04-28

基金项目:

Reader Product Characteristics Analysis of A Short - time Strong Convective Weather

yuhuiling,yang''yu

(Dehong prefecture meteorological bureau)

Abstract:

On August 27, 2016, local lum appear strong convection radar echo data for analysis. Analysis results show that this is a typical convection monomer and under the influence of the squall line systems converging to strengthen the short-term strong convective weather, RCS convection section height can intuitively reflect the development of the single point of strong convection; Squall line in the process of the generation, development, squall line produced by the heavy rain and thunderstorm weather in a short time is gradually strengthened, and in the squall line systems with strong convective storm with short leads to a thunderstorm weather strengthening and rainfall increased; Secondary products with radar SS squall line breakdown process of the location of maximum reflectivity height in the law of diminishing trend is in, is a decrease in the squall line system forecast indexes. The strong convective process from difficult to forecast the weather situation, hope from the doppler weather radar products data analysis concluded that the prediction features can help can issue strong convective weather warning in advance in the future.

Key words: A short time; Strong convective doppler weather radar; Echo characteristics of storm structure products (SS)