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.
出处
《气象科学》
CSCD
北大核心
1996年第3期256-263,共8页
Journal of the Meteorological Sciences
基金
空司气象局资助
关键词
低空急流
风廓线
斜压性
气流
丘陵区
Low level jet
Wind profile
Hanging invertion
Barocline feature
