安徽农业科学2013，Vol.41Issue(3)：1216-1219,4.
陕西榆林一次大暴雨天气的中尺度分析
Mesoscale Analysis of a Heavy Rainstorm in Yulin City of Northern Shaanxi
王云 1赵红兰 1刘裕锋 2李晓利 1张建康3
作者信息
- 1. 榆林市气象局,陕西榆林719000
- 2. 府谷县气象局,陕西府谷719400
- 3. 绥德县气象局,陕西绥德718000
- 折叠
摘要
Abstract
[Objective] The study aims at analyzing a regional rainstorm in Yulin City of northern Shaanxi. [Method] Based on conventional meteorological data, from the aspects of circulation pattern, mesoscale system, water vapor and dynamical conditions, a regional rainstorm oc-curing during July 1 - 3 , 2011 in Yulin City of northern Shaanxi was discussed. [Result] There was a small closed subtropical high near Fu-jian, around which southwest air flow existed constantly, providing water vapor for rainstorm areas for a long time; plateau trough moved eastwards, which provided dynamical field for rainstorm areas; the convergence between northeast cold air and low-level jet flow triggered this rainstorm; rainstorm areas were closely related to mesoscale low-pressure, and the storm appeared in the low-level jet flow in front of mesoscale low pressure; cloud systems in upper trough and low-level jet flow combined, increased and generated rainstorm cloud cluster, while brightness temperature on the top of clouds was below - 90 ℃. [Conclusion] The research could provide theoretical foundation for forecast of rainstorms in future.关键词
暴雨/水汽/中尺度低压Key words
Rainstorm/ Water vapor/ Mesoscale low-pressure分类
农业科技引用本文复制引用
王云,赵红兰,刘裕锋,李晓利,张建康..陕西榆林一次大暴雨天气的中尺度分析[J].安徽农业科学,2013,41(3):1216-1219,4.
