| 2005年江西一次秋季暴雨天气过程诊断分析 |
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| 引用本文： | 郑婧,朱星球,肖安.2005年江西一次秋季暴雨天气过程诊断分析[J].气象与减灾研究,2007,30(2):60-64. |
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| 作者姓名： | 郑婧 朱星球 肖安 |
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| 作者单位： | 江西省气象台,江西,南昌,330046 |
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| 摘 要： | 利用天气图、T213物理量场以及相关实况资料,综合分析了2005年11月8—11日江西一次暴雨天气过程的主要天气系统和行星尺度环流背景。分析结果表明,副高异常偏强且位置适中,孟加拉湾低槽偏强,中高纬度“双阻”形势以及东北冷涡异常偏强,导致了这次超历史强度的连续暴雨过程;高空低槽、西南气流、低层切变、地面倒槽和静止锋是主要天气系统;暴雨区始终集中在急流以北风速辐合最大处和地面静止锋的北侧。通过对物理量的比较分析发现,此次过程的热力条件和水汽条件均低于汛期,但动力抬升条件则明显强于汛期。
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| 关 键 词： | 秋季暴雨 环流特征 天气系统 物理量。 |
| 文章编号： | 1007-9033（2007）02-0060-05 |
| 修稿时间： | 2006-11-102007-02-15 |
Diagnosis Analysis of a Heavy Rainfall in the Autumn of 2005 in Jiangxi Province |
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| ZHENG Jing,ZHU Xing-qiu,XIAO An.Diagnosis Analysis of a Heavy Rainfall in the Autumn of 2005 in Jiangxi Province[J].Meteorology and Disaster Reduction Research,2007,30(2):60-64. |
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| Authors: | ZHENG Jing ZHU Xing-qiu XIAO An |
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| Institution: | Jiangxi Provincial Meteorological Observatory, Nanchang 330046, China |
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| Abstract: | A heavy rainfall happened during November 8th to 11th in 2005 in Jiangxi province is analyzed with synoptic charts,physical variables of T213 and some daily observational data.The main influencing systems and circulation situations are also discussed.The results indicate that,the subtropical high pressure being located properly,"double blocking" in mid-high latitude,trough at the Bay of Bengal,the extremely strong subtropical high pressure and the cold vortex in northeast China led to the unusual continuous heavy rainfall.The main direct influencing systems come from the upper trough,southwest current,low-level shear line,and the inverse trough and stationary front on the ground.And the heavy rainfall region was at the north of stationary front and the northern region of jet stream with the largest wind speed.By comparing,we can find that the thermal and vapor condition is weaker,but the dynamic condition is stronger than those of flood season. |
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| Keywords: | Continuous heavy rainfall in autumn Circulation situations Synaptic systems Physical variables |
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