| 冬季海上爆发性气旋成因的动力学研究 |
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| 引用本文： | 张永刚,孙成志,吕美仲,欧阳子济. 冬季海上爆发性气旋成因的动力学研究[J]. 海洋预报, 2000, 17(3): 28-36 |
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| 作者姓名： | 张永刚 孙成志 吕美仲 欧阳子济 |
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| 作者单位： | 1. 海军大连舰艇学院海洋气象教研室,大连
2. 空军气象学院动力气象教研室,南京 |
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| 摘 要： | 本文对１９７９年１月和４月发生于西北太平洋地区的两个爆发性气旋和一个非爆发性气旋，应用位势涡度和Ｅ－Ｐ通量等进行了诊断分析。分析揭示，爆发性气旋发生与发展，不同于普通气旋的动力机制，它是由于平流层底的涡度异常增大南侵和下旋对对流层扰动、上层冷空气下传表成的上下偶合垂直结构的发展性气旋。其动力主要来自上层强和下层的水汽输送产生的大量而集中的凝结潜热。
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| 关 键 词： | 爆发性气旋 海洋 E－P通量 动力学 |
| 修稿时间： | 2000-04-01 |
A DYNAMIC STUDY OF OCEAN EXPLOSIVE CYCLOGENESIS DEVELOPMENTS |
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| Zhang Yonggang,Shun Chengzhi,LU Meizhong,Ouyang Ziji. A DYNAMIC STUDY OF OCEAN EXPLOSIVE CYCLOGENESIS DEVELOPMENTS[J]. Marine Forecasts, 2000, 17(3): 28-36 |
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| Authors: | Zhang Yonggang Shun Chengzhi LU Meizhong Ouyang Ziji |
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| Affiliation: | Zhang Yonggang,Shun Chengzhi;(Dalian Naval Academy Ocean Weather Center, Datian);LU Meizhong,Ouyang Ziji;(Force Weather Academy Dynamic Weather Center, Nanjing) |
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| Abstract: | A diagnostic analysis of both two explosive cyclogenesis and a general cyclone over western-northern pacific ocean in 1979 is studied by both potential vorticity and E-P flux.The analysis results demonstrate that explosive cyclogenesis development mechanism is stratosphere lower-level abnormal increase cold vorticity moving to southern and disturbance convective layer baroclinic band, and upper-level colder air flow down, upper-lower couple developing. The main dynamic mechanism is upper-layer force action and lowerlayer aqueous vapour transports production laege-convergence condensation latent heat. |
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| Keywords: | explosive cyclogenesis potential vorticity, E-P flux diagnostic analysis |
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