全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
大气科学  2008 

引发川东暴雨的西南低涡演变特征个例分析

DOI: 10.3878/j.issn.1006-9895.2008.01.13

Keywords: 西南低涡,切变线,对流,暴雨

Full-Text   Cite this paper   Add to My Lib

Abstract:

利用NCEP格点再分析资料、观测资料和MM5模式的高分辨率输出资料,对2004年9月4~6日发生在四川盆地东部地区的大暴雨过程进行了诊断分析和数值模拟,重点分析引发这次大暴雨的西南低涡的结构和演变特征及其在暴雨发生发展过程中的作用。对低层850hPa、700hPa候平均水汽通量和各时刻整层水汽通量的分析表明,此次西南低涡暴雨的水汽主要来自于南海,水汽沿西太平洋副热带高压的西南侧经青藏高原东部流入四川盆地。在西南低涡的发展过程中,“桑达”台风向西北移动,阻断了西太平洋副热带高压的东退并切断副高,被切断的高压部分滞留在西南低涡东侧,导致低涡不能顺利东移。数值模拟研究发现,在西南低涡的发展过程中,中层400~500hPa附近一直伴有涡旋的存在,且此涡旋的发展演变过程与低层涡旋明显不同;中层涡旋的发展不像低层涡旋那样呈现单边持续地增长或衰减的特征,而是呈现明显的增长-衰减-再增长的演变特征,其最大值增长时段和低层涡旋也并不一致。分析表明这个中层涡旋实际上是中层大气里一个中尺度闭合低压造成的,这个闭合低压是由高空槽加深发展而来的。数值模拟输出结果还显示,发生在西南低涡东侧切变线里的对流垂直运动是由高空槽里的闭合低压激发出来的。

References

[1]  中国气象局预测减灾司.2005年全国重大天气过程总结和预报技术经验交流会论文摘要汇编.北京,2005.1~88 Department of Forecasting Services and Disaster Mitigation of China Meteorological Administration.The Compilation of Abstracts of the Conference on Summing-up and Intercommunication of Severe Weather in 2005.Beijing,2005.1~88
[2]  矫梅燕,李川,李延香.一次川东大暴雨过程的中尺度分析.应用气象学报,2005,16(3):699~704 Jiao Meiyan,Li Chuan,Li Yanxiang.Mesoscale analyses of Sichuan heavy rainfall.Journal of Applied Meteorological Science (in Chinese),2005,16 (3):699~704
[3]  王春国,肖红茹,谌贵珣.四川盆地东北部2004年"9.3"大暴雨天气过程浅析.四川气象,2005,1:10~13 Wang Chunguo,Xiao Hongru,Chen Guixun.The analysis of 2004 "9.3" heavy rain in north-east of Sichuan Basin.Sichuan Meteorology (ni Chinese),2005,1:10~13
[4]  陶诗言.中国之暴雨.北京:科学出版社,1980.225pp Tao Shiyan.Rainstorm in China (in Chinese).Beijing:Science Press,1980.225pp
[5]  卢敬华.西南低涡概论.北京:气象出版社,1986.275pp Lu Jinghua.The Conspectus of Southwest Vortex (in Chinese).Beijing:China Meteorological Press,1986.275pp
[6]  高守亭.流场配置及地形对西南低涡形成的动力作用.大气科学,1987,11(3):263~271 Gao Shouting.The dynamic action of the disposition of the fluid fields and the topography on the formation of the Southwest Vortex.Chinese Journal of Atmospheric Sciences (Scientia Atmospherica Sinica) (in Chinese),1987,11 (3):263~271
[7]  赵平,卢敬华.一次西南低涡形成机制的数值试验.低伟高原天气,1990,3:48~53 Zhao Ping,Lu Jinghua.Numerical simulation of the formation mechanism of Southwest Vortex.Weather Over Low Latitude Plateau (in Chinese),1990,3:48~53
[8]  钱正安,顾弘道,颜宏.四川"81.7"特大暴雨和西南涡的数值模拟.气象学报,1990,48(4):415~423 Qian Zheng\'an,Gu Hongdao,Yan Hong.Numerical simulation of extremely intense rainstorm and Southwest Vortex over Sichuan in July 1981.Acta Meteorologica Sinica (in Chinese),1990,48 (4):415~423
[9]  李国平,万军,卢敬华.暖性西南低涡生成的一种可能机制.应用气象学报,1991,2(1):91~99 Li Guoping,Wan Jun,Lu Jinghua.A potential mechanism of the warm vortex genesis in Southwest China.Quarterly Journal of Applied Meteorology (in Chinese),1991,2 (1):91~99
[10]  孙淑清,田生春,杜长萱.中尺度低涡发展时高层流场特征及能量学研究.大气科学,1993,17(2):137~147 Sun Shuqing,Tian Shengchun,Du Changxuan.The features of flow pattern in upper level and energy conversion during the development of meso-scale vortex.Chinese Journal of Atmospheric Sciences (Scientia Atmospherica Sinica) (in Chinese),1993,17 (2):137~147
[11]  覃丹宇,方宗义,江吉喜.典型梅雨暴雨系统的云系及其相互作用.大气科学,2006,30(4):578~586 Qin Danyu,Fang Zongyi,Jiang Jixi.The cloud systems of heavy rainfall in the typical Meiyu period and their interactions.Chinese Journal of Atmospheric Sciences (in Chinese),2006,30 (4):578~586
[12]  Kuo Y H,Cheng L H,Anthes R A.Mesoscale analyses of the Sichuan flood catastrophe 11-15 July 1981.Mon.Wea.Rew.,1986,114:1984~2003
[13]  黄福均.西南低涡的合成分析.大气科学,1986,10(4):402~408 Huang Fujun.A composite analysis of the Southwest Vortex.Chinese Journal of Atmospheric Sciences (Scientia Atmospherica Sinica) (in Chinese),1986,10 (4):402~408
[14]  陈忠明,缪强,闵文彬.一次强烈发展西南低涡的中尺度结构分析.应用气象学报,1998,9(3):273~282 Chen Zhongming,Miao Qiang,Min Wenbin.A case analysis on mesoscale structure of severe Southwest Vortex.Quarterly Journal of Applied Meteorology (in Chinese),1998,9(3):273~282
[15]  程麟生,郭英华."81.7"四川暴雨期西南涡生成和发展的涡源诊断.大气科学,1988,12(1):18~26 Cheng Linsheng,Guo Yinghua.The diagnosis of vorticity source of Southwest Vortex in the initial and mature stages during the Sichuan rainstorm in July 1981.Chinese Journal of Atmospheric Sciences (Scientia Atmospherica Sinica) (in Chinese),1988,12 (1):18~26
[16]  陈忠明,闵文彬,缪强,等.高原涡与西南涡耦合作用的个例分析.高原气象,2004,23(1):75-80 Chen Zhongming,Min Wenbin,Miao Qiang,et al.A case study on coupling interaction between plateau and Southwest Vortex.Plateau Meteorology (in Chinese),2004,23 (1):75-80
[17]  Liang Ping,LI Wei,Chen Longxun,et al.Features and sources of the anomalous moisture transport for the severe summer rainfall over the upper reaches of the Yangtze River.Acta Meteorologica Sinica,2005,19 (4):202~215
[18]  张金善,钟中,黄瑾.中尺度大气模式MM5简介.海洋预报,2005,22(1):31~40 Zhang Jinshan,Zhong Zhong,Huang Jin.An introduction to mesoscale model MM5.Marine Forecasts (in Chinese),2005,22(1):31~40
[19]  张大林.各种非绝热物理过程在中尺度模式中的作用.大气科学,1998,22(4):548~561 Zhang Dalin.The role of all kinds of non-adiabatic physical processes in mesoscale model.Chinese Journal of Atmospheric Sciences (Scientia Atmospherica Sinica) (in Chinese),1998,22 (4):548~561
[20]  Anthes R A.A cumulus parameterization scheme utilizing a one-dimensional cloud model.Mon.Wea.Rev.,1977,105:270~286
[21]  Grell G A.Prognostic evolution of assumption used by cumulus parameterizations.Mon.Wea.Rev.,1993,121:764~787
[22]  Arakawa A,Schubert W H.Interaction of a cloud ensemble with the large-scale environment.Part Ⅰ.J.Atmos.Sci.,1974,31:674~701
[23]  Fritsch J M,Chappell C F.Numerical prediction of convectively driven mesoscale pressure system.Part Ⅰ:Convective parameterization.J.Atmos.Sci.,1980,37:1722~1733
[24]  Kain J S,Fritsch J M.A one-dimensional entraining/detraining plume model and its application in convective parameterization.J.Atmos.Sci.,1990,47:2784~2802
[25]  陈栋,李跃清,黄荣辉.在"鞍"型大尺度环流背景下西南低涡发展的物理过程分析及其对川东暴雨发生的作用.大气科学,2007,31(2):185~201 Chen Dong,Li Yueqing,Huang Ronghui.The physical process analyses of the southwest vortex development and its effect on heavy rainfall in eastern Sichuan under the saddle pattern background of large-scale circulations.Chinese Journal of Atmospheric Sciences (in Chinese),2007,31 (2):185~201

Full-Text

Contact Us

[email protected]

QQ:3279437679

WhatsApp +8615387084133