| 陇东异常偏早暴雨个例分析 |
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| 引用本文： | 王位泰,李锦萍,张天锋,黄斌,任继帮.陇东异常偏早暴雨个例分析[J].气象科技,2005,33(4):330-333. |
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| 作者姓名： | 王位泰 李锦萍 张天锋 黄斌 任继帮 |
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| 作者单位： | 1. 中国气象局兰州干旱气象研究所,兰州,730020;甘肃省庆阳市气象局,西峰,745000
2. 甘肃省庆阳市气象局,西峰,745000 |
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| 基金项目： | 致谢：本工作得到国家气候中心赵振国研究员指导,深表谢意. |
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| 摘 要： | 对2003年4月1日陇东庆城县暴雨过程的环流背景、动力、热力和水汽等条件诊断分析，旨在探讨陇东春季异常偏早暴雨的短期天气分析预报思路。结果表明：异常偏早暴雨过程前48h和24h，增温明显，地面的湿静力能量跃增，后期冷空气较强，中低层对流性不稳定层结显著，深厚的正涡度、低层的低涡辐合和高空的强辐散场发展是仲春季节产生异常偏早暴雨的主要影响因子。
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| 关 键 词： | 异常偏早暴雨 环流形势 影响系统 暴雨过程 异常 个例分析 陇东 不稳定层结 环流背景 诊断分析 |
| 收稿时间： | 2004-04-28 |
| 修稿时间： | 2004-07-07 |
Exceptionally Early Heavy Rain Case Study in Eastern Gansu Province |
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| Wang WeiTai;Li JinPing;Zhang TianFeng;Huang Bin;Ren JiBang.Exceptionally Early Heavy Rain Case Study in Eastern Gansu Province[J].Meteorological Science and Technology,2005,33(4):330-333. |
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| Authors: | Wang WeiTai;Li JinPing;Zhang TianFeng;Huang Bin;Ren JiBang |
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| Abstract: | A diagnostic analysis was made of the circulation background, dynamical and thermal and water vapor conditions for a heavy rain event on the 1 April 2004 over the eastern Gansu Province, aiming to find out useful forecasting hints for the sort of heavy rainfall. The results show that the main influencing factors include: temperature increased obviously 48 and 24 hours before raining; surface humid-static energy increased rapidly; there existed strong cold air activity, remarkable mid- and lower-level convection, profound positive vorticity, lower-level low-vortex convergence, and upper-level strong divergence at the end. |
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| Keywords: | exceptionally early heavy rain circulation pattern influencing system |
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