Using the conventional detection, satellite images, T-log P and NCEP reanalyzes data (horizontal resolution 2.5°×2.5°), under the background of a cold vortex from 8 to 18 on June 2012, the route of the cold vortex and the cause of the severe convective weather in different areas of Inner Mongolia were investigated.The results show that: (1) the reasons for cold vortex's turning west were cold air from West Siberia and the transportation of vorticity to the back of the vortex.Turning west of the cold vortex is the main reason of long duration of the cold vortex, the rainstorm and continuous severe convective weather.The east region of Inner Mongolia was located in a tongue of high of potential temperature and its high gradient.(2) In the northeast of Inner Mongolian,severe convective weather happened when meso-micro scale convective systems strongly developed and consolidated,and maximum rainfall intensity happened when TBB(gradient of TBB)obviously decrease(increase), the ascending motion and water vapor convergence in the vertical direction of the windward slop were strengthened by terrain, which offer conditions for rainstorm.(3) In the southeast of Inner Mongolian,merging of several meso-micro scale convective systems continually lead the deep moisture air to the southeast of Inner Mongolian,and the water vapor was convergent strongly in the vertical direction.There also existed dry intrusion in the southeast, which provided instable condition for the severe convective weather.Low level jet and low level shear were the dynamic factor of the severe convective weather.The severe convective weather happened under the ascending branch of secondary circulation.
MA Suyan
,
HAN Jingwei
,
SI Qin
,
CHANG Yu
. Analysis of the Severe Convective Weather Caused by Long-Live Cold Vortex in Inner Mongolian[J]. Plateau Meteorology, 2015
, 34(5)
: 1435
-1444
.
DOI: 10.7522/j.issn.1000-0534.2014.00098
[1]陶诗言等.中国之暴雨[M].北京:科学出版社,1980:225.
[2]刘成歧,李贵臣,陈连友.东北冷涡移动路径的统计预报[J].大气科学,1976,1(1): 68-71.
[3]王东海,钟水新,刘英,等.东北暴雨的研究[J].地球科学进展,2007,22(6):551-560.
[4]钟水新,王东海,张人禾,等.一次东北冷涡降水过程的结构特征与影响因子分析[J].高原气象,2011,30(4):951-960.
[5]张云,雷恒池,钱贞成.一次东北冷涡衰退阶段暴雨成因分析[J].大气科学,2008,32(3):481-493.
[6]孙力.东北冷涡持续性活动的分析研究[J].大气科学,1997,21(3):298-307.
[7]乔枫雪,赵思雄,孙建华.一次引发暴雨的东北低涡的涡度和水汽收支分析[J].气候与环境研究,2007,12(3):398-412.
[8]陈力强,张立祥,周小珊.东北冷涡不稳定能量分布特征及其与降水落区的关系[J].高原气象,2008,27(2):339-348.
[9]傅慎明,孙建华,张敬萍,等.一次引发强降水的东北冷涡的演变机理及能量特征研究[J].气象,2015,41(5):554-565.
[10]郑媛媛,张雪晨,朱红芳,等.东北冷涡对江淮飑线生成的影响研究[J].高原气象,2014,331):262-269,doi:10.7522/j.issn.1000-0534.2013.00005.
[11]张立祥.东北冷涡中尺度对流系统研究[D].南京:南京信息工程大学,2008:2-7.
[12]钟水新,王东海,张人禾,等.一次冷涡发展阶段大暴雨过程的中尺度对流系统研究[J].高原气象,2013,32(2):435-445,doi:10.7522/j.issn.1000-0534.2012.00042.
[13]常煜,韩经纬.一次阻塞形势下的内蒙古暴雨过程特征分析[J].高原气象,2015,34(3):741-752,doi:10.7522/j.issn.1000-0534.2014.00033.
[14]宋桂英,李孝泽,江靖,等.2012年7月内蒙古极端降水事件及成因[J].高原气象,2015,34(1):163-172,doi:10.7522/j.issn.1000-0534.2013.00148.
[15]张仙,谌芸,王磊,等.冷涡背景下京津冀地区连续降雹统计分析[J].气象,2013,39(12):1570-1579.
[16]朱乾根,林锦瑞,寿绍文,等.天气学原理和方法[M].北京:气象出版社,2007:11-12.
[17]孙力,王琪,唐晓玲.暴雨类冷涡与非暴雨类冷涡的合成对比分析[J].气象,1994,21(3):7-10.
[18]崔胜权,张炳川,孙晓巍,等.次冷涡天气背景下的强对流天气过程分析[J].安徽农业科学,2010,38(15):7997-7999.
[19]张立祥,李泽椿.东北冷涡研究概述[J].气候与环境研究,2009,14(2):218-228.
[20]朱占云,何金海.东北冷涡的特征、影响及其可能机制的研究[J].气象与减灾研究,2010,33(4):1-8.
[21]李云静,张建春,王捷纯,等.一次冷涡背景下强对流不稳定条件的成因分析[J].气象,2013,39(2):210-217.
[22]黄士松.暴雨过程中低空急流形成的诊断分析[J].大气科学,1981,2(5):123-135.
[23]陈渭民.卫星气象学[M].第2版.北京:气象出版社,2012:345-349.
[24]王磊,谌芸,张仙,等.冷涡背景下MCS的统计分析[J].气象,2013,39(11):1385-1392.
[25]王涛,齐彦斌,王东,等.东北冷涡积层混合云系形成条件的个例分析[J].气象与环境学报,2010,26(5):7-13.
[26]易笑园,李云,朱磊磊,等.长生命史冷涡影响下持续强对流天气的环境条件[J].气象,2010,36(1):2181-2192.
[27]吴迪,姚秀萍,寿绍文.干侵入对一次东北冷涡过程的作用分析[J].高原气象,2010,29(5):1208-1217.
