| 爆发性气旋的合成诊断及形成机制研究 |
| |
| 引用本文： | 丁治英,翟兆锋,等.爆发性气旋的合成诊断及形成机制研究[J].应用气象学报,2001,12(1):30-40. |
| |
| 作者姓名： | 丁治英 翟兆锋 |
| |
| 作者单位： | 1.南京气象学院大气科学系, 南京 210044 |
| |
| 基金项目： | 本文得到国家自然科学基金重点项目49335060(49335061)资助. |
| |
| 摘 要： | 该文对发生在太平洋和大西洋的16个爆发性气旋作了合成分折, 对强弱爆发性气旋作了对比及诊断.研究发现, 基本场上存在不少明显的差异.分析得出, 强爆发性气旋的形成与高空急流的非纬向性以及反气旋性弯曲密切相关.非纬向高空急流为爆发性气旋提供了强的辐散、斜压性、斜压不稳定场.高层强爆发性气旋前部的反气旋曲率易造成重力惯性波在能量北传时发展, 促使气旋快速加深.暖平流及非绝热加热可使反气旋曲率加强.一般情况下, 当气旋西部位涡的大值区与北部位涡的大值区叠加下沉时, 有利于气旋爆发性发展.
|
| 关 键 词： | 太平洋 大西洋 爆发性气旋 合成诊断 非纬向高空急流 |
| 收稿时间： | 1999-08-02 |
| 修稿时间： | 1999年8月2日 |
Research on Composite Diagnosis and Mechanisms of Explosive Cyclones |
| |
| Ding Zhiying,Wang Jinsong,Zhai Zhaofeng.Research on Composite Diagnosis and Mechanisms of Explosive Cyclones[J].Quarterly Journal of Applied Meteorology,2001,12(1):30-40. |
| |
| Authors: | Ding Zhiying Wang Jinsong Zhai Zhaofeng |
| |
| Institution: | 1.Nanjing Institute of Meteorology, Nanjing 2100442.National Research Center for Marine Environmental Forecasts, Beijing 100081 |
| |
| Abstract: | In this paper it is analysed for 16 explosive cyclones on Atlantic and pacific oeans.The ‘weak’and ‘strong’explosive cyclones are diagnosed and compared.It is fund that the basic fields are different at many aspects.The formation of strong explosive cyclones is relate to the non zonel upper jet of anticyclonic curvature.The jet can cause the upper divergence fields and baroclinic sites and barocl inic instability and the development of internal gtavity waves in northward.the warm advection and diabatic heating can increase the curvature.In general,when the large value centers of potential vorticity move to the centers of explosive yclones,it is advantages of explosive cyclones. |
| |
| Keywords: | Pacific Atlantic Explosive cyclone Composite diagnosis Non zonal upper jet |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《应用气象学报》浏览原始摘要信息 |
| 点击此处可从《应用气象学报》下载免费的PDF全文 |
