| 垂直螺旋度在京津特大暴雨中的诊断分析 |
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| 引用本文： | 赵金霞,范苏丹,徐灵芝.垂直螺旋度在京津特大暴雨中的诊断分析[J].天津科技,2014(6):61-64. |
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| 作者姓名： | 赵金霞 范苏丹 徐灵芝 |
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| 作者单位： | [1]天津滨海新区气象局,天津300457 [2]南京信息工程大学,江苏南京210044 |
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| 摘 要： | 利用NCEP的1,°×1,°格点资料,计算北京和天津地区平均垂直螺旋度;配合常规观测资料及多普勒雷达资料,对2012年7月21—22日京津特大暴雨进行诊断分析,结果表明:在高空槽与低空气旋性涡旋配合的形势下,平均垂直螺旋度对特大暴雨的发生发展有很好的诊断作用。
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| 关 键 词： | 垂直螺旋度 特大暴雨 诊断分析 |
Diagnostic Analysis on Vertical Helicity in a Torrential Rainstorm That Took Place in the Beijing-Tianjin Region |
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| ZHAO Jinxia,FAN Sudan,XU Lingzhi.Diagnostic Analysis on Vertical Helicity in a Torrential Rainstorm That Took Place in the Beijing-Tianjin Region[J].Tianjin Science & Technology,2014(6):61-64. |
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| Authors: | ZHAO Jinxia FAN Sudan XU Lingzhi |
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| Institution: | 1. Meteorological Bureau of Tianjin Binhai New Area, Tianjin 300457, China; 2. Naujing Information Engineering University, Naujing 210044, China) |
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| Abstract: | The NCEP 1°×1° grid data was used in the calculation of the average vertical helicity in the Beijing-Tianjin region; based on diagnostic analysis on both conventional observation data and Doppler radar data, a diagnostic analysis on an extraordinary rainstorm took place in the Beijing-Tianjin region from July 21-22, 2012 was performed.The results showed that, with the coordination of upper-level trough and lower-level cyclonic vortex, the average vertical helicity plays an important role in the diagnosis of the development and progressing of an extraordinary rainstorm. |
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| Keywords: | vertical helicity extraordinary storm diagnostic analysis |
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