矢量分析法在福建两次飑线天气过程分析中的应用  

Application of  vector in analyzing two squall lines occurred in Fujian

作　　者：林金凎 龚振彬 吴启树 

机构地区：[1]福州市气象局,福建福州350014

出　　处：《台湾海峡》2006年第1期117-122,共6页Journal of Oceanography In Taiwan Strait

摘　　要：简要介绍了准地转Q矢量分析方法,并用NCEP 1°×1°格点资料计算了Q矢量、Q矢量散度场及Q矢量锋生函数等物理量.从Q矢量流场、Q矢量散度场水平和垂直分布,及Q矢量锋生函数场分布等方面,对2005年5月5日福建前后两次飑线天气过程进行了分析.其结果表明Q矢量分析方法对强对流天气的预报具有指示作用.This paper introduced briefly the quasi-geostrophic Q vector（→↑Q） analysis theory, calculated →↑Q vector, →↑Q vector divergence field and →↑Q vector frontogenesis function by using NCEP 1°×1° grid data. It analyzed two squall lines occurred one after another on May 5,2005 in Fujian by studying the →↑Q vector stream field, horizontal and vertical distribution of →↑Q vector divergence field and →↑Q vector frontogenesis function field distribution. The result showed that the →↑Q vector analysing theory can be taken to forecast severe convective storm.

关 键 词：气象学 飑线 →↑Q矢量分析 散度场 锋生函数 福建 

分 类 号：P444[天文地球—大气科学及气象学]