丘陵山区低空急流特性分析  

THE ANALYSIS OF THE CHARACTERISTICS OF LOW-LEVEL-JET(LLJ) IN HILLY AREA

作　　者：郝为锋[1] 王庆安[2] 苏晓冰[1] 邹爱生 

机构地区：[1]空军气象学院,21110 [2]南京大学大气科学系,210008

出　　处：《气象科学》1996年第3期256-263,共8页Journal of the Meteorological Sciences

基　　金：空司气象局资助

摘　　要：利用丘陵区边界层实测资料，分析了该地区8～9月份低空急流的特征及其演变规律；并从测站所处的地理环境、山丘地形的热力差异以及适中的风平流作用等，探讨了测站上空逆温的形成及其对低空急流的形成和维持作用；根据地形热力差异所导致的气层斜压性，研究了低空急流的生消可能机制。By using boundary layer data actually measured in hilly area,we analyse the characteristics and evolutional law of LLJ in August and September in that area;on the basis of the geographical environment where the station locates,the thermodynamic difference of hilly terrain,and the effect of medium wind-advection,etc.,we analyse the formation of hanging invertion over the station and its effects on LLJ's formation and maintenance ;according to layer's barocline resulting from terrain' s thermodynamic difference, we explore the possible essence of LLJ's genesis and disappearance.

关 键 词：低空急流 风廓线 斜压性 气流 丘陵区 

分 类 号：P421.3[天文地球—大气科学及气象学]