干旱气象

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SWAN 雷达产品在甘肃河东地区冰雹短临预报中的应用

傅朝闫晗刘维成宋琳琳   

  1. 兰州中心气象台,甘肃兰州730020
  • 收稿日期:2012-11-19 修回日期:2012-12-17 出版日期:2013-03-30 发布日期:2013-03-01
  • 作者简介:傅朝( 1967 - ) ,男,汉族,浙江绍兴人,高级工程师,现主要中短期预报工作. E - mail: dry52889@ hotmail. com
  • 基金资助:

     中国气象局预报员专项( CMAYBY2012 - 063 ) 及西北东部短历时强降水和冰雹天气的预报预警关键技术集成应用( CMAGJ20BZ09) 资助

Application of SWAN Radar Products to Nowcasting of Hail in Hedong Region of Gansu Province

FU ZhaoYAN HanLIU WeichengSONG Linlin   

  1. Lanzhou Center Meteorological Observatory,Lanzhou 730020,China)
  • Received:2012-11-19 Revised:2012-12-17 Online:2013-03-30 Published:2013-03-01

摘要:

选取2011 年7 月发生在甘肃省河东地区的7 次冰雹个例,综合分析SWAN 系统输出的雷达产品资料的主要特征,提取冰雹天气的雷达产品资料的指标,根据这些指标利用SWAN 系统外推算法资料生成冰雹临近预报产品。通过2012 年甘肃河东地区的2 次冰雹天气过程对与其同时的临近预报产品检验结果表明,预报效果良好,具有较高的业务应用价值。

关键词: 甘肃河东地区, SWAN 雷达产品, 冰雹临近预报产品

Abstract:

A new method based on radar response was studied for hail nowcasting. The key characteristics of radar response data produced by the SWAN system were summerized by collecting 7 hail weather cases which occurred in July of 2011 in the Hedong region of Gansu. Thus,nowcasting for hail is feasible according to the key characteristics by using extrapolate data outputed from SWAN system.Comparing the nowcasting products for hail with the real condition of two hail cases which occured in 2012 in the east of Yellow River in Gansu,the results show that the new method had a significant effect for forecast and was suggested to apply in actual operation.

Key words: the east region of Yellow River in Gansu Province, SWAN radar products, hail nowcasting products

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