| 干侵入对"0310"暴雨形成过程的影响 |
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| 引用本文： | 王淑云,寿绍文,周连科.干侵入对"0310"暴雨形成过程的影响[J].自然灾害学报,2009,18(6). |
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| 作者姓名： | 王淑云 寿绍文 周连科 |
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| 作者单位： | 1. 河北省沧州市气象台,河北,沧州,061001
2. 南京信息工程大学,江苏,南京,210044 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 通过位涡、相对湿度与相当位温关系的讨论并结合2003年10月10-12日河北深秋时节在冀中南部发生的特大暴雨,分析了倾斜涡度发展理论.发现此次暴雨过程中存在干侵入现象,且干侵入的发生、发展对暴雨过程具有重要影响;干侵入沿相当位温高值脊向对流层低层伸展,引起对流层低层气旋性涡度的发展,使降水强度加剧.干侵入是暴雨形成的一种重要机制.
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| 关 键 词： | 暴雨 诊断分析 干侵入 位涡 |
Influence of dry intrusion on formative process of"0310"rinstorm |
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| WANG Shu-yun,SHOU Shao-wen,ZHOU Lian-ke.Influence of dry intrusion on formative process of"0310"rinstorm[J].Journal of Natural Disasters,2009,18(6). |
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| Authors: | WANG Shu-yun SHOU Shao-wen ZHOU Lian-ke |
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| Abstract: | Combined with a violent rainstorm taked place in Hebei and Shandong provinces from October 10 to 12,2003,and through a discussion on relationship among the potential vorticity,the relative humidity and the constant potential temperature,the theory about development of slantwise vortieity WaS analyzed.It is discovered that dry intrusion flow has an important influence on rainstorm course.Dry intrusion flow spreads to lower layer of troposphere along hish value spine of constant potential temperature,causes cyclone vorticity development in lower layer of troposphere,aggravates precipitation intensity and is one of the important mechanism to cause the rainstorm. |
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| Keywords: | rainstorm diagnostic analysis dry intrusion potential vortieity |
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