CAJ | 학술논문

利用常规观测资料和NCEP再分析资料,对2000—2014年盘锦地区出现的12次冰雹过程进行了详细分析.结果表明:盘锦地区出现冰雹天气的月变化特征明显,主要集中在5—11月,其中10月最多.主要天气类型可以分为3类:冷涡型、低槽型及偏西气流型.从大尺度形势特征来看,盘锦地区冰雹日各层均有动力辐合系统,并且整层系统配置近似垂直或略前倾.冰雹天气的发生并不需要较强的湿度条件,地面风场、0℃层温度、-20℃层温度、850 hPa与500 hPa温差及TT指数等对冰雹天气发生有着较好的指示意义.
이용상규관측자료화NCEP재분석자료,대2000—2014년반금지구출현적12차빙박과정진행료상세분석.결과표명:반금지구출현빙박천기적월변화특정명현,주요집중재5—11월,기중10월최다.주요천기류형가이분위3류:랭와형、저조형급편서기류형.종대척도형세특정래간,반금지구빙박일각층균유동력복합계통,병차정층계통배치근사수직혹략전경.빙박천기적발생병불수요교강적습도조건,지면풍장、0℃층온도、-20℃층온도、850 hPa여500 hPa온차급TT지수등대빙박천기발생유착교호적지시의의.
Based on conventional meteorological observation and NCEP reanalysis data,this paper analyzed the 12 times hail weather process happened in Panjin during 2000 to 2014.The results were as follows:hail weather showed significant monthly variation,it concentrated in May to November,almost of which in October.Moreover,there were three main types of weather conditions occurred in hail:cold vortex,trough and westerly flow.According to the large-scale view of the weather situation,when the hail occurs,each layer had the dynamic coupling system,and the whole system was approximate vertical or leaned forward.The occurrence of hail weather didn' t need strong humidity conditions,Surface wind field,0 ℃ layer temperature,-20℃temperature,850 hPa and 500 hPa temperature differences and TT index of hail weather had good instruction significance.