江西农业学报
江西農業學報
강서농업학보
ACTA AGRICULTURAE JIANGXI
2015年
8期
104-108
,共5页
暴雨%物理机制%天气动力学%湿位涡%诊断分析
暴雨%物理機製%天氣動力學%濕位渦%診斷分析
폭우%물리궤제%천기동역학%습위와%진단분석
Torrential rain%Physical mechanism%Synoptic dynamics%Moist potential vorticity%Diagnosis and analysis
利用Micaps实时资料和数值预报及物理量产品，对临夏州2013年“8·10”区域性暴雨、冰雹天气过程进行了动力、热力学诊断分析，结果表明：此次暴雹降水过程的大气环流形势为典型的“东高西低”型，过程前期，副高西伸北抬且稳定，进退频繁，导致较强冷空气在副高外围堆积，副高东退时爆发，促使能量释放而造成的暴雨降水过程。综合分析了“8·10”暴雨天气过程，探讨了强降水天气系统的结构特征及形成的物理机制，寻求对预报有指示意义的物理量。
利用Micaps實時資料和數值預報及物理量產品，對臨夏州2013年“8·10”區域性暴雨、冰雹天氣過程進行瞭動力、熱力學診斷分析，結果錶明：此次暴雹降水過程的大氣環流形勢為典型的“東高西低”型，過程前期，副高西伸北抬且穩定，進退頻繁，導緻較彊冷空氣在副高外圍堆積，副高東退時爆髮，促使能量釋放而造成的暴雨降水過程。綜閤分析瞭“8·10”暴雨天氣過程，探討瞭彊降水天氣繫統的結構特徵及形成的物理機製，尋求對預報有指示意義的物理量。
이용Micaps실시자료화수치예보급물리양산품，대림하주2013년“8·10”구역성폭우、빙박천기과정진행료동력、열역학진단분석，결과표명：차차폭박강수과정적대기배류형세위전형적“동고서저”형，과정전기，부고서신북태차은정，진퇴빈번，도치교강랭공기재부고외위퇴적，부고동퇴시폭발，촉사능량석방이조성적폭우강수과정。종합분석료“8·10”폭우천기과정，탐토료강강수천기계통적결구특정급형성적물리궤제，심구대예보유지시의의적물리량。
Applying the real-time data , digital forecast and physical-quantity product from Micaps , we carried out the thermo-dynamic diagnosis and analysis of the regional torrential rain and hail storm synoptic processes occurred on August 10th, 2013 in Linxia state.The results showed that the atmospheric circumfluence feature of this storm -hail precipitation process was the typical sample of “high in the east and low in the west”.In the earlier period of this process , the subtropical high stretched out in the west , lifted in the north, and was steady, but it advanced and retreated frequently , which caused the accumulation of colder air in the pe-riphery of the subtropical high .The subtropical high broke out when it retreated in the east , which promoted the energy release and led to the torrential rain process.The author comprehensively analyzed the “8· 10” torrential rain synoptic process, explored the structural characteristics of heavy precipitation synoptic system and the physical mechanism of its formation , and sought the physical quantities with indicative significance for forecast .
