2016年9月密云一次飑线过程分析
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摘要
利用MICAPS常规气象探测观测资料、北京市和怀来多普勒天气雷达资料、密云地面加密自动气象站观测资料、南郊观象台探空资料等,对2016年9月4日午后至夜间发生在密云的一次飑线天气过程进行总结分析。结果表明:此次飑线天气过程是发生在高空冷涡大尺度的天气背景下的低层切变线,配合地面倒槽共同影响;飑线系统是由若干个对流单体形成组织松散的带状回波,是典型的中尺度系统,持续时间约8个小时,造成范围较大、间歇性持续时间较长的冰雹天气和短时强降水;系统过境时风速、风向、气压、气温等气象要素变化明显;低层强的垂直风切变加上较大的Cape值、和特殊的地形是此次触发飑线系统发生的机制。
Using MICAPS conventional meteorological observation data, Beijing and doppler weather radar data, offers the ground observation data encryption automatic weather station in miyun, southern observatory sounding data, etc., A squall line event occurred in the afternoon to night on 4 September 2016 in Miyun was analyzed with Micaps,doppler radar data of Beijing and Huailai, encrypted automatic weather stations data in Miyun and Southern Observatory sounding data. The results showed that this squall line event was mainly affected by the lower-level shear line under the background of upper-lever cold vortex and the ground inverted trough. The squall line which formed by several convection cell loosely organized band echo was a typical mesoscale system lasts about eight hours, causing wide, intermittent duration longer hail weather and short-time strong rainfall.when the system passed by,the wind speed and direction, air pressure, temperature and other meteorological elements changed obviously. Lower-level strong vertical wind shear and the larger Cape value, and special topography is an important mechanism of this squall line event.
Using MICAPS conventional meteorological observation data, Beijing and doppler weather radar data, offers the ground observation data encryption automatic weather station in miyun, southern observatory sounding data, etc., A squall line event occurred in the afternoon to night on 4 September 2016 in Miyun was analyzed with Micaps,doppler radar data of Beijing and Huailai, encrypted automatic weather stations data in Miyun and Southern Observatory sounding data. The results showed that this squall line event was mainly affected by the lower-level shear line under the background of upper-lever cold vortex and the ground inverted trough. The squall line which formed by several convection cell loosely organized band echo was a typical mesoscale system lasts about eight hours, causing wide, intermittent duration longer hail weather and short-time strong rainfall.when the system passed by,the wind speed and direction, air pressure, temperature and other meteorological elements changed obviously. Lower-level strong vertical wind shear and the larger Cape value, and special topography is an important mechanism of this squall line event.
引文
[1]俞小鼎,姚秀萍,熊廷南,等,《多普勒天气雷达原理与业务应用》[M].北京:气象出版社,2006.
[2]Houze R A,P V Hobbs,et al.1982.Organization and structure of precipiation cloud systems.Advance in Geophysics,24:225-315.
[3]曲晓波,王建捷,杨晓霞,等,2010.2009年6月淮河中下游三次飑线过程的对比分析.气象,36(7):151-159.
[4]姚晨,郑媛媛,张雪晨,长生命史飑线在强、弱对流降水过程中的异同点分析[J].高原气象.2012,31(5):1366-1375.
[5]丁一汇,李鸿洲,章名立,等,我国飑线发生条件的研究[J]。大气科学,1982,6(1):8-27.
[6]Bluestein H B,Jain M H.1985.Formation of mesoscale lines of precipitation:Severe squall lines in Oklahoma during the spring.J Armos Sci,42(16):1711-1732.
[7]Bluestein H B,Marx G T,Jain M H.1987.Formation of mesoscale lines of precipitation:Nonsevere squall lines in Oklahoma during the spring.Mon Wea Rev,115(11):2719-2727.
[8]Rotunno R,Klemp J B,Weisman M L.1988.A theory for stong,long-Iived squall lines.J Atmos Sci,45(3):463-485.
[9]姚叶青,俞小鼎,张义军,等,一次典型飑线过程多普勒天气雷达资料分析[J].高原气象.2008年4月,第27卷第2期.
[10]姚学翔,等,《天气预报技术与方》法.北京:气象出版社.
[11]王迎春,钱婷婷,郑永光,陶祖钰.对引发密云泥石流的局地暴雨的分析和诊断.应用气象报.
[12]梅娜,刘家峻,余运河,等,北京暴雨天气成因分析。第八届全国优秀青年气象科技工作者学术研讨论文汇编.
[13]叶彩华,姜会飞,李楠,等。2007.北京地区冰雹发生的时空分布特征。中国农业大学学报。12(5):34-40.
[14]易笑园,李泽春,李云,等。2010.长生命使冷涡背景下持续强对流天气的环境条件。气象,38(1):17-25.
[15]姚建群,戴建华,姚祖庆,2005,一次强飑线的成因及维持和加强机制分析。应用气象学报,16(6):746-753.
[2]Houze R A,P V Hobbs,et al.1982.Organization and structure of precipiation cloud systems.Advance in Geophysics,24:225-315.
[3]曲晓波,王建捷,杨晓霞,等,2010.2009年6月淮河中下游三次飑线过程的对比分析.气象,36(7):151-159.
[4]姚晨,郑媛媛,张雪晨,长生命史飑线在强、弱对流降水过程中的异同点分析[J].高原气象.2012,31(5):1366-1375.
[5]丁一汇,李鸿洲,章名立,等,我国飑线发生条件的研究[J]。大气科学,1982,6(1):8-27.
[6]Bluestein H B,Jain M H.1985.Formation of mesoscale lines of precipitation:Severe squall lines in Oklahoma during the spring.J Armos Sci,42(16):1711-1732.
[7]Bluestein H B,Marx G T,Jain M H.1987.Formation of mesoscale lines of precipitation:Nonsevere squall lines in Oklahoma during the spring.Mon Wea Rev,115(11):2719-2727.
[8]Rotunno R,Klemp J B,Weisman M L.1988.A theory for stong,long-Iived squall lines.J Atmos Sci,45(3):463-485.
[9]姚叶青,俞小鼎,张义军,等,一次典型飑线过程多普勒天气雷达资料分析[J].高原气象.2008年4月,第27卷第2期.
[10]姚学翔,等,《天气预报技术与方》法.北京:气象出版社.
[11]王迎春,钱婷婷,郑永光,陶祖钰.对引发密云泥石流的局地暴雨的分析和诊断.应用气象报.
[12]梅娜,刘家峻,余运河,等,北京暴雨天气成因分析。第八届全国优秀青年气象科技工作者学术研讨论文汇编.
[13]叶彩华,姜会飞,李楠,等。2007.北京地区冰雹发生的时空分布特征。中国农业大学学报。12(5):34-40.
[14]易笑园,李泽春,李云,等。2010.长生命使冷涡背景下持续强对流天气的环境条件。气象,38(1):17-25.
[15]姚建群,戴建华,姚祖庆,2005,一次强飑线的成因及维持和加强机制分析。应用气象学报,16(6):746-753.
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