摘要
选取１９９１年７月长江中下游地区一次梅雨涡旋暴雨过程，对实测资料用Ｂａｌｅｎｓ尺度分离方法经自适应技术处理后，应用动能相互作用方程组，计算得出发展阶段和成熟阶段涡旋区内对流层高、中、低各层次天气尺度和次天气尺度系统的动能源汇以及相互作用过程，尤其看到两种尺度流场和质量场之间相互作用所制造的动能向两种尺度系统转换，故它是一个促使系统发生发展的能量学标志。
Observational data of a selected heavy rain by the Mei-yu vortex in the middle and lower reaches of the Yangtze River in July 1991 are put through a self-adaptive treatment by use of the method of Barens' stale separation. A set of equations for niteractions of kinetic energy is then used to describe the sources (sinks) and interactive processes for synoptic and sub-synoptic stale systems at layers of the troposphere within the area of the vortex in both the developing and maturing stages. The results show that the kinetic energy produced by interaction between wind and mass fields of both scales transforms into the synoptic arid mesoscale systems. It is a sing of energetics for a developing system.
出处
《热带气象学报》
CSCD
1996年第1期91-96,共6页
Journal of Tropical Meteorology
基金
国家自然科学基金
关键词
动能收支
梅雨
涡旋
暴雨
环境场
相互作用
Stale interaction Kinetic energy budgets Mei-Yu vorticity Heavy rainfalls
