| 环境场作用与西南低涡移动的初步分析 |
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| 引用本文： | 陈忠明.环境场作用与西南低涡移动的初步分析[J].高原气象,1989(4). |
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| 作者姓名： | 陈忠明 |
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| 作者单位： | 四川省自贡市气象局 |
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| 摘 要： | 本文将西南低涡视为迭加在环境场上的一个扰动,把考虑环境场和非绝热作用下的次天气尺度扰动方程组写在一个简单斜压两层模式上,根据西南低涡的特点对方程组作一些近似处理,导得了反映低层(700hPa)西南低涡移动特征的移矢诊断方程。由此分析了影响西南低涡移动的主要因子,得出了一些定性结果。最后,利用移矢诊断方程作了低涡移动的实例计算分析,其结果与实况比较一致。
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| 关 键 词： | 西南低涡 移动 环境场 诊断 |
THE PRELIMINARY STUDY OF EFFECT OF ENVIRONMENT FLOW FIELDS ON MOVEMENT OF SOUTHWEST VORTEX |
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| Chen Zhongming.THE PRELIMINARY STUDY OF EFFECT OF ENVIRONMENT FLOW FIELDS ON MOVEMENT OF SOUTHWEST VORTEX[J].Plateau Meteorology,1989(4). |
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| Authors: | Chen Zhongming |
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| Abstract: | In this paper, Southwest Vortex is regarded as a sub-synoptical scale disturbance in environment flow fields. The equations describing sub-synoptical scale disturbance are applied to a simple two layer model. According to some feature of the Southwest Vortex, the equations are simplified by making some approximations. The vector C indicating movement feature of the Southwest Vortex in lower troposphere is obtained by solving the equations. Using the diagnostic equation (35), the main factors which influence the movement of Southwest Vortex are discussed and some qualitative results are obtained. Finally, a case study of process of movement of Southwest Vortex is made by using these results. |
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| Keywords: | Southwest Vortex Movement Ambient fields Diagnosis |
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