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大气科学  2007 

梅雨期暴雨个例模拟及其中小尺度结构特征分析研究

DOI: 10.3878/j.issn.1006-9895.2007.01.01

Keywords: 梅雨,中尺度对流系统,雷达回波,数值模拟

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Abstract:

利用中尺度数值模式MM5和多普勒雷达观测资料,对2002年7月22~23日发生在长江中游一次梅雨暴雨过程进行模拟和分析。模拟结果与观测资料相比基本吻合。主要研究内容包括暴雨过程α中尺度到γ中尺度的回波结构以及动力特征和云降水粒子的分布。研究结果表明:在长江中游地区存在一条东北西南走向低空切变线,切变线北侧偏东气流中回波较弱,而南侧西南气流中不断出现强对流云团发生发展、合并分裂现象,形成沿着切变线分布的α中尺度对流带。对流带中有多个东北西南向的β中尺度波列,这些波列由从西南向东北方向移动的γ中尺度回波所构成。新回波大多产生在老回波的后部。γ中尺度回波具有相应尺度的气流辐合辐散结构。各种云降水粒子与动力场相互配合,上升运动位置和强弱决定云水的位置和强弱。云发展初期降雨首先产生于低层,以暖雨过程为主,成熟期云中冰相粒子对降水非常重要。强回波区的降水会在近地面产生出流。在西南气流中,远离切变线的回波移速大于靠近切变线的回波,容易产生回波合并;强回波由于降水而产生下沉和辐散气流,易导致回波分裂。

References

[1]  Moteki Q,Uyeda H,Masesaka T,et al.Structure and development of two merged rainbands observed over the East China Sea during X-BAIU-99.Parts II:Meso-α-scale structure and build-up process of convergence in the Baiu frontal region.J.Meteor.Soc.Japan,2004,82 (1):45~65
[2]  Ninomiya K,Akiyama T,Ikawa M.Evolution and fine structure of a long-lived meso-α-scale convective system in Baiu frontal zone.Part II:Evolution and meso-γ-scale characteristics of precipitation.J.Meteor.Soc.Japan,1988,66 (2):351~371
[3]  斯公望.东亚梅雨锋暴雨研究进展.地球科学进展,1994,9 (2):11~17 Si Gongwang.Advances in studies of the heavy rainfall associated with the Mei-yu front over East Asia.Advance in Earth Sciences (in Chinese),1994,9 (2):11~17
[4]  陶诗言.中国之暴雨.北京:科学出版社,1980.225pp Tao Shiyan.The Heavy Rain in China (in Chinese).Beijing:Science Press,1980.225pp
[5]  Akiyama T.Large synoptic and mesoscale variations of the Baiu front during July 1982.Part II:Frontal structure and disturbances.J.Meteor.Soc.Japan,1990,68 (5):557~574
[6]  Akiyama T.Large synoptic and mesoscale variations of the Baiu front during July 1982.Part III:Space-time scale and structure of frontal disturbances.J.Meteor.Soc.Japan,1990,68 (6):705~727
[7]  Yoshizaki M,Kato T,Muroi C,et al.Recent activities of field observations on mesoscale convective systems (MCSs) over East China Sea and Kyushu in the Baiu Season and over the Japan Sea in winter.Int.Conf.Mesoscale Convective Systems and Heavy Rainfall/Snowfall in East Asia,Tokyo,Japan,2002.80~85
[8]  倪允琪,周秀骥.中国长江中下游梅雨锋暴雨形成机理以及监测与预测理论和方法研究.气象学报,2004,62 (5):647~662 Ni Yunqi,Zhou Xiuji.Study for formation mechanism of heavy rainfall within the Meiyu front along the middle and downstream of Yangtze River and theories and methods of their detection and prediction.Acta Meteor.Sinica (in Chinese),2004,62 (5):647~662
[9]  Takahashi N,Uyeda H,Kikuchi K,et al.Mesoscale and convective scale features of heavy rainfall events in late period of the Baiu season in July 1988,Nagasaki Prefecture.J.Meteor.Soc.Japan,1996,74 (4):539~561
[10]  Shibagaki Y,Yamanaka M D,Shimizu S,et al.Meso-β to -γ-scale wind circulations associated with precipitating clouds near Baiu front observed by the MU and meteorological radars.J.Meteor.Soc.Japan,2000,78 (1):69~91
[11]  程麟生,冯伍虎."987" 突发大暴雨及中尺度低涡结构的分析和数值模拟.大气科学,2001,25 (4):465~478 Cheng Linsheng,Feng Wuhu.Analyses and numerical simulation on an abrupt heavy rainfall and structure of a mesoscale vortex during July 1998.Chinese Journal of Atmospheric Sciences (in Chinese).2001,25 (4):465~478
[12]  翟国庆,王智,何斌.长江中下游梅雨期中小尺度涡旋族发生演变分析.气象学报,2003,61 (6):661~672 Zhai Guoqing,Wang Zhi,He Bin.Formation and evolution analysis of the mesoscale vortex group in the middle and lower reaches during Meiyu of the Yangtze River.Acta Meteor.Sinica (in Chinese),2003,61 (6):661~672
[13]  王建捷,李泽椿.1998年一次梅雨锋暴雨中尺度对流系统的模拟和诊断分析.气象学报,2004,60 (2):146~155 Wang Jianjie,Li Zechun.Numerical simulation and diagostic analysis on mesoscale convective system of a torrential rain case in Meiyu period of 1998.Acta Meteor.Sinica (in Chinese),2004,60 (2):146~155
[14]  孙建华,张小玲,齐琳琳,等.2002年中国暴雨试验期间一次低涡切变线上发生发展的中尺度对流系统研究.大气科学,2004,28 (5):675~691 Sun Jianhua,Zhang Xiaoling,Qi Linlin,et al.A study of vortex and its mesoscale convective system during China heavy rainfall experiment and study in 2002.Chinese Journal of Atmospheric Sciences (in Chinese).2004,28 (5):675~691
[15]  Yamada H,Geng B,Reddy K K.Three-dimensional structure of a mesoscale convective system in a baiu-frontal depression generated in the downstream region of the Yangtze River.J.Meteor.Soc.Japan,2003,81 (5):1243~1271
[16]  贝耐芳,赵思雄.1998年 "二度梅" 期间突发强暴雨系统的中尺度分析.大气科学,2002,26 (4):526~540 Bei Naifang,Zhao Sixiong.Mesoscale analysis of severe local heavy rainfall during the second stage of the 1998 Meiyu season.Chinese Journal of Atmospheric Sciences (in Chinese),2002,26 (4):526~540
[17]  孙建华,张小玲,齐琳琳,等.2002 年6 月20~24 日梅雨锋中尺度对流系统发生发展分析.气象学报,2004,62 (4):423~438 Sun Jianhua,Zhang Xiaoling,Qi Linlin,et al.An analysis on MCSs in meiyu front during 20-24 June 2002.Acta Meteor.Sinica (in Chinese),2004,62 (4):423~438
[18]  赵思雄,陶祖钰,孙建华,等.长江流域梅雨锋暴雨机理的分析研究.北京:气象出版社,2005.281pp Zhao Sixiong,Tao Zuyu,Sun Jianhua,et al.Study on Mechanism of Formation and Development of Heavy Rainfalls on Meiyu Front in Yangtze River (in Chinese).Beijing:China Meteorological Press,2005.281pp
[19]  刘黎平,阮征,覃丹宇.长江流域梅雨锋暴雨过程的中尺度结构个例分析.中国科学(D辑),2004,34 (12):1193~1201 Liu Liping,Ruan Zheng,Qin Danyu.A case analysis on mesoscale structure during Meiyu front heavy rainfall in Yangtze River.Scientia Sinica (Series D) (in Chinese),2004,34 (12):1193~1201
[20]  楼小凤.MM5模式的新显式云物理方案的建立和耦合及原微物理方案的对比分析.北京大学博士学位论文,2002.127pp Lou Xiaofeng.Development and implementation of a new explicit microphysical scheme and comparisons of original schemes of MM5.Ph.D.Dissertation.Peking University,2002.127pp
[21]  Wang Pengyun,Yang Jing.Observation and numerical simulation of cloud physical processes associated with torrential rain of the Mei-yu front.Adv.Atmos.Sci.,2003,20 (1):77~96
[22]  Ninomiya K,Akiyama T,Ikawa M.Evolution and fine structure of a long-lived meso-α-scale convective system in Baiu frontal zone Part I:Evolution and meso-β-scale characteristics.J.Meteor.Soc.Japan,1988,66 (2):331~350
[23]  Takahashi T,Yamaguchi N,Kawano T.Videosonde observation of torrential rain during Baiu season.J.Meteor.Soc.Japan,2001,58 (3):205~228

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