郑州一次暴雨过程的多普勒雷达风廓线产品特征分析
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摘要
对2008年7月13～14日郑州市出现的一次暴雨过程中的雷达风廓线产品(VWP)特征和基于风廓线产品计算的风暴相对螺旋度特征进行分析,结果发现:(1)边界层辐合线的存在利于风暴云的生成;超低空急流的产生加强了水汽输送,为风暴云的发展提供有利条件,而底层东风气流的加强为对流的触发提供了抬升条件;(2)多部雷达的VWP产品综合分析可捕捉到直接导致对流性天气的中小尺度系统;(3)风暴相对螺旋度(SRH)的迅速增大、稳定、减弱的变化趋势与雨强的增强、维持和减弱相对应,但SRH值的大小与雨强并无一致的线性关系;(4)个例的分析应用表明新一代雷达的VWP产品提供了高时间分辨率的风场信息,为强降水的短时临近预报提供了更加丰富的参考信息。
The Doppler weather radar VWP products have been used to analysis the heavy rainstorm weather on July 13-14,2008,in Zhengzhou. The results showed that :( 1) The existence of boundary layer convergence line in favor of the formation of storm clouds; the production of super low-level jet increase the transfer of water vapor and provide the favorable conditions for the development of storm cloud; and the intensification of the easterly flow in the bottom layer provide the lifting conditions for the convection trigger;( 2) The integrated analysis of many radar VWP productions can catch the mesoscale and microscale system which conduced the convective weather;( 3) The variation tendency of storm-relative helicity( SRH) increase rapidly,stability and reduced is corresponded with the increase,maintenance and reduced of rainfall intensity,but the size of SRH values is not consistent with the rainfall intensity;( 4) The case analysis and application indicate that VWP products of radar provide high temporal resolution wind field information,and provide more extensive reference information for short term forecasting and nowcasting of severe rainfall.
The Doppler weather radar VWP products have been used to analysis the heavy rainstorm weather on July 13-14,2008,in Zhengzhou. The results showed that :( 1) The existence of boundary layer convergence line in favor of the formation of storm clouds; the production of super low-level jet increase the transfer of water vapor and provide the favorable conditions for the development of storm cloud; and the intensification of the easterly flow in the bottom layer provide the lifting conditions for the convection trigger;( 2) The integrated analysis of many radar VWP productions can catch the mesoscale and microscale system which conduced the convective weather;( 3) The variation tendency of storm-relative helicity( SRH) increase rapidly,stability and reduced is corresponded with the increase,maintenance and reduced of rainfall intensity,but the size of SRH values is not consistent with the rainfall intensity;( 4) The case analysis and application indicate that VWP products of radar provide high temporal resolution wind field information,and provide more extensive reference information for short term forecasting and nowcasting of severe rainfall.
引文
[1]田军,张云瑾,王秀春.“20070802”郑州中尺度暴雨的卫星及雷达资料分析[J].云南大学学报(自然科学版),2009,31(S2):443-450
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[3]赵海军,潘玲,王庆华,等.临沂冰雹发生规律及预警技术研究[J].气象与环境科学,2018,41(2):83-90
[4]陆大春,蒋年冲.VAD有关产品在临近预报中的应用[J].应用气象学报,2003,14(增刊):156-160
[5]李戈,武威.沙澧河流域致洪预警系统设计与应用[J].气象与环境科学,2018,41(1):138-143
[6]方标,张逸,严小冬.雷达资料在黔东北雷电预警中的应用研究[J].气象与环境科学,2017,40(3):133-137
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[11]张彩英.基于风廓线雷达资料的暴雪天气过程分析[J].气象与环境科学,2016,39(4):80-85
[12]李容,冯汉中,高细桥,等.新一代天气雷达雨量估测与实况的对比实现[J].高原山地气象研究,2010,30(1):66-68
[13]赵静,青泉,顾清源.一次对流性强降雨过程的雷达特征分析[J].高原山地气象研究,2010,30(2):46-50
[14]田密,张剑秋,张杰.C波段多普勒雷达观测暴雨灾害过程的分析[J].高原山地气象研究,2012,32(3):22-27
[15]吴莉娟,江智全,肖天贵,等.凉山山地强降雨型泥石流灾害雷达短临预警技术研究[J].高原山地气象研究,2013,33(1):86-89
[16]王丽荣,胡志群,匡顺四.应用雷达产品计算风暴相对螺旋度[J].气象,2006,32(4):45-51
[17]徐芬,夏文梅,胡志群,等.多普勒天气雷达风场产品在螺旋度计算中的应用[J].气象科学,2007,27(5):495-500
[18]刘淑媛,郑永光,陶祖钰.利用风廓线雷达资料分析低空急流的脉动与暴雨关系[J].热带气象学报,2003,19(3):285-290
[19]俞小鼎,姚秀萍,熊廷南,等.多普勒天气雷达原理与业务应用[M].北京:气象出版社,2006:216-217
[20]Lilly D K.The structure,energetics and propagation of rotating convective storms,PartⅠ:Energy exchange with the mean flow[J]. J Atoms Sci,1986,43:113-125
[21]Lilly D K.The structure,energetics and propagation of rotating convective storms,PartⅡ:Helicity and storm stabilization[J]. J Atoms Sci.1986,43:126-140
[22]Preston W.Leftwich Jr.1990.On the use of helicity in assessment of severe local storm potential[C].Preprints,16th of Conf.on Severe Local Strom,Am Meteor Soc,306-310
[23]伍荣生,谈哲敏.广义涡度与位势涡度守恒定律及应用[J].气象学报,1989,47(4):436-442
[24]Woodall G R.1990.Qualitative analysis and forecasting of tornadic activity using storm-relative helicity[C].Preprints,16th of Conf. on Severe Local Strom,Am Meteor Soc,311-315
[25]Davies-Jones R.Burgess D,Foster M.Test of helicity as a tornado forecast parameter[C]. Preprints,16th Conf. on Severe Local Storms,Amer. Meteor. Soc. 1990:588-592
[2]赵蕾,吴坤悌,陈明. 2016年6月海南一次龙卷过程分析[J].气象与环境科学,2018,41(2):69-75
[3]赵海军,潘玲,王庆华,等.临沂冰雹发生规律及预警技术研究[J].气象与环境科学,2018,41(2):83-90
[4]陆大春,蒋年冲.VAD有关产品在临近预报中的应用[J].应用气象学报,2003,14(增刊):156-160
[5]李戈,武威.沙澧河流域致洪预警系统设计与应用[J].气象与环境科学,2018,41(1):138-143
[6]方标,张逸,严小冬.雷达资料在黔东北雷电预警中的应用研究[J].气象与环境科学,2017,40(3):133-137
[7]金巍,曲岩,姚秀萍,等.一次大暴雨过程中低空急流演变与强降水的关系[J].气象,2007,33(12):31-38
[8]张伟,罗昌荣,郑辉.双雷达反演闽南地区一次暴雨过程三维风场结构特征研究[J].气象与环境科学,2017,40(4):76-82
[9]张一平,孙景兰,牛淑贞,等.河南区域暴雨的若干雷达回波特征[J].气象与环境科学,2015,38(3):25-36
[10]叶爱芬.多普勒雷达VWP产品在一次大暴雨过程中的特征[J].广东气象,2007,29(1):19-21
[11]张彩英.基于风廓线雷达资料的暴雪天气过程分析[J].气象与环境科学,2016,39(4):80-85
[12]李容,冯汉中,高细桥,等.新一代天气雷达雨量估测与实况的对比实现[J].高原山地气象研究,2010,30(1):66-68
[13]赵静,青泉,顾清源.一次对流性强降雨过程的雷达特征分析[J].高原山地气象研究,2010,30(2):46-50
[14]田密,张剑秋,张杰.C波段多普勒雷达观测暴雨灾害过程的分析[J].高原山地气象研究,2012,32(3):22-27
[15]吴莉娟,江智全,肖天贵,等.凉山山地强降雨型泥石流灾害雷达短临预警技术研究[J].高原山地气象研究,2013,33(1):86-89
[16]王丽荣,胡志群,匡顺四.应用雷达产品计算风暴相对螺旋度[J].气象,2006,32(4):45-51
[17]徐芬,夏文梅,胡志群,等.多普勒天气雷达风场产品在螺旋度计算中的应用[J].气象科学,2007,27(5):495-500
[18]刘淑媛,郑永光,陶祖钰.利用风廓线雷达资料分析低空急流的脉动与暴雨关系[J].热带气象学报,2003,19(3):285-290
[19]俞小鼎,姚秀萍,熊廷南,等.多普勒天气雷达原理与业务应用[M].北京:气象出版社,2006:216-217
[20]Lilly D K.The structure,energetics and propagation of rotating convective storms,PartⅠ:Energy exchange with the mean flow[J]. J Atoms Sci,1986,43:113-125
[21]Lilly D K.The structure,energetics and propagation of rotating convective storms,PartⅡ:Helicity and storm stabilization[J]. J Atoms Sci.1986,43:126-140
[22]Preston W.Leftwich Jr.1990.On the use of helicity in assessment of severe local storm potential[C].Preprints,16th of Conf.on Severe Local Strom,Am Meteor Soc,306-310
[23]伍荣生,谈哲敏.广义涡度与位势涡度守恒定律及应用[J].气象学报,1989,47(4):436-442
[24]Woodall G R.1990.Qualitative analysis and forecasting of tornadic activity using storm-relative helicity[C].Preprints,16th of Conf. on Severe Local Strom,Am Meteor Soc,311-315
[25]Davies-Jones R.Burgess D,Foster M.Test of helicity as a tornado forecast parameter[C]. Preprints,16th Conf. on Severe Local Storms,Amer. Meteor. Soc. 1990:588-592