| 一次短时强降水暴雨天气过程成因分析 |
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| 引用本文： | 田明,王瑞军,魏清霞,余永州,闫惠玲.一次短时强降水暴雨天气过程成因分析[J].安徽农业科学,2014(9):2672-2674,2695. |
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| 作者姓名： | 田明 王瑞军 魏清霞 余永州 闫惠玲 |
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| 作者单位： | 甘肃省两当县气象局,甘肃两当,742400;甘肃省两当县气象局,甘肃两当,742400;甘肃省两当县气象局,甘肃两当,742400;甘肃省两当县气象局,甘肃两当,742400;甘肃省两当县气象局,甘肃两当,742400 |
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| 摘 要： | 利用常规气象资料、自动区域站降水资料及卫星云图资料,对2013年7月22日发生在甘肃省陇南市两当县的暴雨天气进行了分析.结果表明,此次暴雨是在东高西低的典型暴雨环流形势下,高原短波槽、副高西伸北抬及低层切变线共同作用造成的,同时,偏南气流和地面锋面也是造成暴雨的重要因子;物理量诊断分析表明水汽通量、水汽通量散度、垂直速度等物理量在相同的时间均最有利于暴雨的发生发展;卫星云图上对流云团的发展移动与TBB梯度大值区暴雨落区有很好对应关系.
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| 关 键 词： | 短时强降水 暴雨 成因分析 两当县 |
Analysis on Causes for a Short-time Heavy Rainstorm |
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| Institution: | TIAN Ming et al (Liangdang County Meteorological Bureau of Gansu Province, Liangdang, Gansu 742400) |
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| Abstract: | On the basis of conventional meteorological data, rainfall data and satellite cloud data of automatic weather stations, this paper analyzed a heavy rainstorm of Liangdang County in Longnan City of Gansu Province on July 22, 2013. The results showed that this time of rainstorm is caused jointly by typical circulation of East High and West Low, the short wave trough of Plateau, the west Pacific high extend westward and extending northward, as well as the shear line on lower layer. In addition, southerly airstream and frontal surface are also important factors. Physical diagnosis analysis indicated that the vapor flux, vapor flux divergence and the vertical velocity were the most benefit to the occurrence and development of the rainstorm. There is a high correlation between the development and movement of convective cloud and high value area gradients of TBB with the rainstorm area. |
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| Keywords: | Short-time heavy rainfall Rainstorm Analysis of causes Liangdang County |
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