| 一次高空槽在青藏高原上诱发切变线的Q矢量分析 |
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| 引用本文： | 郁淑华.一次高空槽在青藏高原上诱发切变线的Q矢量分析[J].应用气象学报,1994,5(1):109-113. |
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| 作者姓名： | 郁淑华 |
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| 作者单位： | 1.成都高原气象研究所 |
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| 摘 要： | 通过对1982年6月1—6日一次高空槽在青藏高原上诱发切变线的过程进行了Q矢量分析，发现高原切变线产生、维持在明显的呈东西向的500 hPa Q矢量辐合带内，而且低层500 hPa ▽·Q0。这说明宽广的上升运动的存在和加强，是产生、维持切变线的重要机制。高原切变线的产生、维持还与锋生情况有一定的关系。
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| 关 键 词： | Q矢量 切变线 高空槽 |
A Q-vector Analysis of the Process of Shear Line on Qinghai-Xizang Plateau Triggered form Moving Trough Aloft |
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| Yu Shuhua.A Q-vector Analysis of the Process of Shear Line on Qinghai-Xizang Plateau Triggered form Moving Trough Aloft[J].Quarterly Journal of Applied Meteorology,1994,5(1):109-113. |
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| Authors: | Yu Shuhua |
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| Affiliation: | 1.(Chengdu Institute of Plateau Meteorology, Chengdu 610072) |
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| Abstract: | By using Q-vector analysis of the process of shear line formation over the Qinghai-Xizang Plateau on 1—6 June 1982, which is triggered from a moving trough aloft, it is found that the favorable situations are: (1) the shear line on the Plateau is formed and maintained in a convergent zone extending from east to west at the 500 hPa Q-vector field where ▽? Q＜0, and at 200 hPa ▽? Q＞0; (2) a wide area of ascent current is an important role of formation and maintenance of the shear line; (3) the formation and existance of shear line over the Plateau is connected with frontogenesis to certain extent. |
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| Keywords: | Q-vector Shear line Convergence Upper trough |
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