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一次冰雹天气过程的云系发展演变及云物理特征研究
张小娟1, 陶玥2, 刘国强1, 彭宇翔1
(1.贵州省人工影响天气办公室;2.中国气象科学研究院中国气象局人工影响天气中心)
A study on the evolution of hailstorm and the characteristics of cloud physics
zhangxiaojuan1, taoyue2, liuguoqiang1, pengyuxiang1
(1.Weather modification office of Guizhou Province;2.Weather modification center, Chinese Academy of Meteorological Sciences)
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投稿时间:2017-12-05    修订日期:2018-12-21
中文摘要: 利用中尺度数值模式WRF(Weather Research and Forecasting)的数值模拟,结合NECP/FNL再分析资料、地面、探空、多普勒雷达基数据和卫星产品等观测资料,综合分析了2014年3月30日发生在贵州省西南部的一次冰雹天气过程。研究了有利于冰雹发生的环流特征和环境条件,分析了冰雹云系的发展演变特征、云微物理结构特征,初步分析了冰雹形成的云物理机制。结果表明:此次冰雹天气是典型的低压辐合线型降雹类型,地面降雹位置位于700hpa切变线和近地面辐合线附近及南侧;发生此次冰雹过程的对流云系经历了对流云系的初生阶段、合并加强阶段、成熟降雹阶段和东移阶段。贵州地区上空对流云系的微物理结构具有混合相云特征,高层为冰晶、雪,中层为云水、霰,低层为雨水、冰雹。霰和云水是形成雨水和冰雹的主要来源,霰撞冻过冷云水和霰的自动转化是冰雹形成的主要微物理机制。
中文关键词: WRF  数值模拟  云物理机制  冰雹
Abstract:In this study, a hailstorm that occurred in southwest of Guizhou Province on 30 March 2014 was simulated using the mesoscale mode WRF (Weather Research and Forecasting). Combined with NCEP/FNL reanalysis data, ground, sounding, Doppler radar data, satellite products and other observation data, this hailstorm process was comprehensively analyzed. The characteristics of the hailstorm and the environmental conditions were studied. The evolution characteristics of the hailstorm and the characteristics of the cloud microphysical structure were analyzed, and the cloud physical mechanism of the hailstorm was analyzed. The results showed that the hailstorm was a type of typical low-pressure descending hailstorm, the hail position of the ground was located at (or southern to) shear line of 700hpa and closing to the ground convergence line. The convective cloud of this process had undergone the initial stage, the consolidation stage, the mature-hail stage and the eastward shift stage. The microphysical structure of convective cloud in Guizhou Province had the characteristics of mixed phase cloud, the upper layer were ice crystal and snow, the middle layer was cloudwater and graupel, and the lower layer were rainwater and hail. The most important sources for the rainwater and hail were the graupel and cloudwater. In hail formation, the accretion between graupel and supercooled cloudwater, and the automatic conversion of graupel are the main microphysical mechanism.
文章编号:201712050528     中图分类号:    文献标志码:
基金项目:贵州省工程技术研究中心建设项目(黔科合G【2013】4001号);中国气象局气象关键技术集成与应用项目(CMAGJ2015M53);黔省专合字(2011)11号。
引用文本:
张小娟,陶玥,刘国强,彭宇翔,0.[en_title][J].Meteor Mon,():-.
zhangxiaojuan,taoyue,liuguoqiang,pengyuxiang,0.A study on the evolution of hailstorm and the characteristics of cloud physics[J].Meteor Mon,():-.