2010年9月河南暴雨过程Q矢量分析  

Q Vector Analysis of Torrential Rain in September 2010 in Henan

作　　者：孟祥翼 张金平 马月枝 

机构地区：[1]新乡市气象局,河南新乡453003

出　　处：《气象与环境科学》2011年第B09期105-111,共7页Meteorological and Environmental Sciences

摘　　要：应用Q矢量理论对2010年9月河南省暴雨过程进行诊断分析,结果表明:850 hPa湿Q矢量的正负散度区,分别对应下沉和上升气流区,负散度绝对值大值区与暴雨落区对应;利用850 hPa湿Q矢量散度纬向剖面图可分析出中低层低值系统的移动;Q矢量锋生函数正值区与强降水落区对应,但其值与暴雨强度并非呈线性增长关系,其值逐日演变可反映冷暖空气交汇及锋面移动。This paper uses Q vector theory to analyze the torrential rain process in September 2010 in Henan.The results show that： the positive and negative divergence area of wet Q vector at 850 hPa,are respectively corresponding to subsidence and ascending current area;the maximum absolute value of negative divergence area is corresponding to the torrential rain drop zone;using wet Q vector divergence of the zonal profile section at 850 hPa can analyze the moving of the low value system in the middle and low level;the positive value of Q vector frontogenesis function is corresponding to the torrential rain drop zone,but its value and the corresponding storm intensity is not a linear growth relationship,the daily value evolution reflects the warm-cold air intersection and frontal moving.

关 键 词：非地转Q矢量 暴雨系统诊断 Ω方程 Q矢量散度 锋生函数 

分 类 号：P458.3[天文地球—大气科学及气象学]