冬季一次次天气尺度渤海气旋的动能制造

KINETIC ENERGY PRODUCTION DURING THE DEVELOPMENT OF A SUBSYNOPTIC SCALE BOHAI CYCLONE IN WINTER

中文摘要:

      应用FGGE-Ⅲ_b资料对1979年11月24日-25日一次快速发展并造成渤海二号船翻沉事故的次天气尺度渤海气旋进行了局地动能收支分析.气旋发展期间通过垂直气柱侧边界的动能、势能净通量是辐散的,气旋发展的能源主要依赖于动能产生项、动能转换项以及网格区域不能分辨的尺度运动作用.气旋控制期间边界层风场的增强,其外部能源主要依赖于通过侧边界的动能、势能净通量辐合,内部主要依赖于动能产生项和动能转换项.与前人所研究过的天气尺度气旋相比较,这次气旋在发展阶段的动能产生和剩余源项[E]的数值都较大.

英文摘要:

      An analysis of the kinetic energy budget for a quickly developmental subsynoptic scale Bohai cyclone is made by using FGGE-Ⅲ_b data for the period 24-25 November 1979.The results show that net flux of potential energy and kinetic energy across the lateral boundary of vertical column for the area used in this study is divergent,and energy sources needed at the development stages of cyclone disturbance depend mainly on the kinetic energy generation,conversion and the larger scat processes which are not resolved with the given network point area.About wind field intensification within plant boundary layer during the cyclone control,the external energy sources depend mainly on the boundary layer kinetic,potential energy nit flux convergence,the internal energy sources depend mainly on kinetic energy Reneration and kinetic energy conversion.