| 摘要: |
| 将螺旋度的概念引入热带气旋,对热带气旋螺旋度的结构特征及其在热带气旋发展过程中的演变过程进行了研究。结果表明,热带气旋这种具有较强螺旋性的天气系统,其发展过程也就是螺旋度增强的过程。螺旋度对热带气旋稳定过程的维持及其长久的生命期具有重要的作用。 |
| 关键词: 热带气旋 螺旋度 非线性相互作用 |
| DOI： |
| 分类号: |
| 基金项目:国家自然科学基金 |
|
| HELICITY DYNAMICS IN TROPICAL CYCLONE |
|
Chen Hua, Tan Zhemin
|
|
Department of Atmospheric, Sciences, Nanjing university, Nanjing, 210093
|
| Abstract: |
| In this paper the concept of helicity is introduced in to the tropical cyclone. The dynamical structure and evolution of helicity in the development of tropical cyclone are studied. The results show that tropical cyclone has a strong helicity. Helicity increases with the developing of tropical cyclone and plays an important role in the long life and maintenance of stable situation of tropical cyclone. |
| Key words: Tropical cyclone Helicity Non linear interaction |
