亚热带资源与环境学报
亞熱帶資源與環境學報
아열대자원여배경학보
JOURNAL OF SUBTROPICAL RESOURCES AND ENVIRONMENT
2012年
3期
32-37
,共6页
黄娟%潘钦财%赵璐%沈翊%王芳
黃娟%潘欽財%趙璐%瀋翊%王芳
황연%반흠재%조로%침익%왕방
强降水%冰雹%雷达回波%“穹隆”%浙江
彊降水%冰雹%雷達迴波%“穹隆”%浙江
강강수%빙박%뢰체회파%“궁륭”%절강
heavy rainfall%hail%radar echo%the "vault"%Zhejiang
强对流天气是浙江省主要的灾害性天气之一.利用常规观测资料,Micaps、多普勒雷达等资料,对浙江省2011年梅雨期2次强对流过程进行对比分析,结果表明:6月9日强对流,主要表现为冰雹和雷雨大风;6月18日强对流,主要表现为短时强降水.天气形势上,前者为西风槽型,后者为大陆高压型,2次过程都对应一支西南急流,显然后者的强度更大.探空和对流指数上,前者上干下湿,不稳定条件和对流指数优于后者.雷达回波图上,前者中高层强回波悬垂,出现"穹隆"结构,强回波平均高度和垂直积分液态含水量明显高于后者,后者为回波结构致密,低质心高效率的强降水回波.
彊對流天氣是浙江省主要的災害性天氣之一.利用常規觀測資料,Micaps、多普勒雷達等資料,對浙江省2011年梅雨期2次彊對流過程進行對比分析,結果錶明:6月9日彊對流,主要錶現為冰雹和雷雨大風;6月18日彊對流,主要錶現為短時彊降水.天氣形勢上,前者為西風槽型,後者為大陸高壓型,2次過程都對應一支西南急流,顯然後者的彊度更大.探空和對流指數上,前者上榦下濕,不穩定條件和對流指數優于後者.雷達迴波圖上,前者中高層彊迴波懸垂,齣現"穹隆"結構,彊迴波平均高度和垂直積分液態含水量明顯高于後者,後者為迴波結構緻密,低質心高效率的彊降水迴波.
강대류천기시절강성주요적재해성천기지일.이용상규관측자료,Micaps、다보륵뢰체등자료,대절강성2011년매우기2차강대류과정진행대비분석,결과표명:6월9일강대류,주요표현위빙박화뇌우대풍;6월18일강대류,주요표현위단시강강수.천기형세상,전자위서풍조형,후자위대륙고압형,2차과정도대응일지서남급류,현연후자적강도경대.탐공화대류지수상,전자상간하습,불은정조건화대류지수우우후자.뢰체회파도상,전자중고층강회파현수,출현"궁륭"결구,강회파평균고도화수직적분액태함수량명현고우후자,후자위회파결구치밀,저질심고효솔적강강수회파.
Using conventional observation meteorological data,MICAPS data and Doppler radar data,etc.,the two severe convective events in Zhejiang during the Meiyu period of 2011 were analyzed.The first event took place on 9th June accompanying hail with intense gust,and the other took place on 18th June with short-time heavy rainfall.The results showed that the two events differed greatly from each other in the circulation pattern.In addition,the lower southwest jet conduced more to the occurrence of the 18th June event,but the radiosond,convective indexes,the average strong echo height with reflectivity and VlL values conduced more to the occurrence of the 9th June event.Besides,the radar data showed the details of vault structures and strong echo tendency on the middle-high levels for the 9th June event,and showed the details of dense structure,high efficiency and low-quality strong precipitation echo for the 18th June event.