CAJ | 학술논문

利用常规观测资料和NCEP/NCAR再分析资料等,对2009年6月6日鄂北冰雹天气发生前的抬升、水汽及不稳定条件进行了诊断分析。结果表明：地面中尺度辐合线为冰雹天气发生提供了抬升条件,促进强对流天气爆发;垂直水汽分布上,中低层干盖的形成有效地抑制了边界层对流的发展,为不稳定能量的积聚创造了有利条件;地面干线的形成,增加了大气的潜在斜压性,促进了次级环流的发展,增加了大气不稳定性。多普勒天气雷达资料以及闪电定位等监测数据分析表明：雷达回波组合反射率强度、回波顶高和垂直液态水含量的迅速跃增,对降雹预报有较好的指示意义;10 min闪电频次在降雹前出现了20次以上峰值,可以发布冰雹预警信号。
이용상규관측자료화NCEP/NCAR재분석자료등,대2009년6월6일악북빙박천기발생전적태승、수기급불은정조건진행료진단분석。결과표명：지면중척도복합선위빙박천기발생제공료태승조건,촉진강대류천기폭발;수직수기분포상,중저층간개적형성유효지억제료변계층대류적발전,위불은정능량적적취창조료유리조건;지면간선적형성,증가료대기적잠재사압성,촉진료차급배류적발전,증가료대기불은정성。다보륵천기뢰체자료이급섬전정위등감측수거분석표명：뢰체회파조합반사솔강도、회파정고화수직액태수함량적신속약증,대강박예보유교호적지시의의;10 min섬전빈차재강박전출현료20차이상봉치,가이발포빙박예경신호。
Based on the conventionally observational data and the NCEP/NCAR reanalysis data,a hail weather process on June 6,2009 in the northern Hubei province was analyzed,and the lifting trigger,water vapor and unstable conditions before this process were diagnosed.The results indicated that the surface meso-scale convergence line is the uplifting conditions of this hail process,which leads to the severe convective weather.A dry layer in the middle and low level effectively inhibits the development of convection in the boundary layer and creates favorable conditions for the accumulation of unstable energy.The formation of surface dry line increases potential atmospheric baroclinicity and promotes the development of the secondary circulation,thus atmospheric instability is increased.The analysis based on Doppler weather radar and lightning location data shows that reflectivity intensity of radar echo,echo top heights and vertical integrated liquid water（VIL） increase rapidly,and it is indicative to hail weather.Moreover,the peak values of lightning frequency during 10 min are important to hail warning if they appear more than 20 times ahead of hail occurrence.