| The Generalized Energy Equation and Instability in the Two-layer Barotropic Vortex |
| |
| 作者姓名： | 张铭 赵艳玲 黄泓 梁丹青 |
| |
| 作者单位： | The Laboratory of Atmospheric Circulation and Short-range Climatological Forecasting, Institute of Meteorology, PLA University of Science and Technology, Nanjing 211101 |
| |
| 摘 要： | The linear two-layer barotropic primitive equations in cylindrical coordinates are used to derive a gen- eralized energy equation, which is subsequently applied to explain the instability of the spiral wave in the model. In the two-layer model, there are not only the generalized barotropic instability and the super high- speed instability, but also some other new instabilities, which fall into the range of the Kelvin-Helmholtz instability and the generalized baroclinic instability, when the upper and lower basic flows are different. They are perhaps the mechanisms of the generation of spiral cloud bands in tropical cyclones as well.
|
| 关 键 词： | 广义能量方程 螺旋波 两层正压涡流 不稳定性 热带气旋 |
| 收稿时间： | 2006-01-26 |
| 修稿时间： | 2006-06-15 |
The generalized energy equation and instability in the two-layer barotropic vortex |
| |
| Zhang?Ming,Zhao?Yanling,Huang?Hong,Liang?Danqing.The Generalized Energy Equation and Instability in the Two-layer Barotropic Vortex[J].Advances in Atmospheric Sciences,2007,24(1):147-151. |
| |
| Authors: | Zhang Ming Zhao Yanling Huang Hong Liang Danqing |
| |
| Institution: | The Laboratory of Atmospheric Circulation and Short-range Climatological Forecasting,
Institute of Meteorology, PLA University of Science and Technology, Nanjing 211101,The Laboratory of Atmospheric Circulation and Short-range Climatological Forecasting,
Institute of Meteorology, PLA University of Science and Technology, Nanjing 211101,The Laboratory of Atmospheric Circulation and Short-range Climatological Forecasting,
Institute of Meteorology, PLA University of Science and Technology, Nanjing 211101,The Laboratory of Atmospheric Circulation and Short-range Climatological Forecasting,
Institute of Meteorology, PLA University of Science and Technology, Nanjing 211101 |
| |
| Abstract: | The linear two-layer barotropic primitive equations in cylindrical coordinates are used to derive a generalized energy equation, which is subsequently applied to explain the instability of the spiral wave in the model. In the two-layer model, there are not only the generalized barotropic instability and the super highspeed instability, but also some other new instabilities, which fall into the range of the Kelvin-Helmholtz instability and the generalized baroclinic instability, when the upper and lower basic flows are different.They are perhaps the mechanisms of the generation of spiral cloud bands in tropical cyclones as well. |
| |
| Keywords: | two-layer barotropic vortex generalized energy equation instability spiral wave |
| 本文献已被 CNKI 维普 万方数据 SpringerLink 等数据库收录！ |
| 点击此处可从《大气科学进展》浏览原始摘要信息 |
| 点击此处可从《大气科学进展》下载免费的PDF全文 |
|
