安徽农业科学2012，Vol.40Issue(4)：2240-2242,2254,4.
豫北一次区域性大暴雨过程分析
Analysis on a Regional Heavy Rainstorm Process in North Henan
王爱玲 1陈淑红1
作者信息
- 1. 河南省安阳市气象局,河南安阳455000
- 折叠
摘要
Abstract
[Objective] The research aimed to analyze a regional heavy rainstorm process in North Henan. [Method] Based on routine weather chart, rainfall station in county and town, satellite cloud chart, etc. , by using synoptic diagnostic method, the formation reason of regional heavy rainstorm weather in North Henan during 18 - 19 August, 2010 was initially analyzed from large-scale circulation background, influence system, physical quantity field and terrain influence. [Result] The strong precipitation had obvious meso-scale characteristics. The main influence systems were ground meso-scale convergence line, shear line at middle and low layers, low-level southwest jet. The low-level southwest jet transported sufficient water vapor for generation of heavy rainstorm. The ground converge line increased convergence uplifting movement and water vapor convergence. The atmospheric divergence convergence center at low layer was just in North Henan. The strong rise zone of vertical velocity was also in North Henan. It provided sufficient dynamic condition for rainstorm generation. The generation, development and movement of ground meso-scale convergence line had good indication for occurrence time and falling zone of rainstorm and short-time strong precipitation. The big-value zones of K index and θse at low layer both presented ft distribution at vertical direction, which had indicative significance for strong precipitation forecast. The strong precipitation center corresponded with fork horn terrain, and the orographic rairi characteristics were obvious. [ Conclusion] The research provided reference basis for forecast of this kind of rainstorm.关键词
豫北/区域性大暴雨/中尺度特征/地形雨/成因Key words
North Henan/ Regional heavy rainstorm/ Meso-scale characteristics/ Orographic rain/ Formation reason分类
天文与地球科学引用本文复制引用
王爱玲,陈淑红..豫北一次区域性大暴雨过程分析[J].安徽农业科学,2012,40(4):2240-2242,2254,4.
