摘要
对一次较典型的东北冷涡过程 ,利用自然坐标系下的Ertel位涡守恒原理 ,分析曲率位涡和切变位涡之间的转换及分布特征 ,得出了涡旋加强或减弱的位涡动力诊断模型 。
In terms of the conservation of Ertel′s potential vorticity (PV) of natural coordinates, a typical Northeast vortex process is investigated. By analyzing the transformation between the curvature PV and sheared PV as well as their distribution, we put forward a dynamic diagnostic model for the vortex deepening and decreasing. A prediction method for Northeast cold vortex process has been advanced by a real case calculation.
出处
《气象科学》
CSCD
北大核心
2003年第4期446-451,共6页
Journal of the Meteorological Sciences
基金
<东北冷涡研究>课题资助
关键词
东北冷涡
位涡动力诊断
Northeast cold vortex Dynamic diagnosis for potential vorticity
