论文

广西“4·20”暖区飑线的形成及结构

  • 翟丽萍 ,
  • 农孟松 ,
  • 赖珍权 ,
  • 祁丽燕 ,
  • 刘日胜
展开
  • 广西壮族自治区气象台, 广西 南宁 530022

收稿日期: 2017-06-21

  网络出版日期: 2018-04-28

基金资助

国家自然科学基金项目(41461164006);广西自然科学基金项目(2016GXNSFAA380184);中国气象局预报员专项(CMAYBY2017-054)

Formation and Structure of '4·20' Warm Sector Squall Line in Guangxi Province

  • ZHAI Liping ,
  • NONG Mengsong ,
  • LAI Zhenquan ,
  • QI Liyan ,
  • LIU Risheng
Expand
  • Guangxi Zhuang Autonomous Region Meteorological Observatory, Nanning 530022, Guangxi, China

Received date: 2017-06-21

  Online published: 2018-04-28

摘要

为深入了解暖区飑线的形成机理,利用多种观测资料对2016年4月20日暖区飑线过程的环境条件、形成及飑线的结构进行深入分析。结果表明:(1)高空槽前滞留的冷温槽利于产生强的对流不稳定,飑线发生前期低层强烈暖湿平流对建立静力不稳定起主导作用;(2)探空显示广西南部的环境条件更有利于对流的强盛发展和组织化加强;(3)近地面冷池出流与低层环境风场相互作用是飑线发展和维持的主要机制,飑线朝着其前方1 h负变压中心发展。此次飑线是具有前导对流线和尾随层状云区的飑线系统,以离散性传播为主。

本文引用格式

翟丽萍 , 农孟松 , 赖珍权 , 祁丽燕 , 刘日胜 . 广西“4·20”暖区飑线的形成及结构[J]. 高原气象, 2018 , 37(2) : 568 -576 . DOI: 10.7522/j.issn.1000-0534.2017.00058

Abstract

A warm area squall line occurred in Guangxi province on 20 April 2016, bringing strong wind and heavy rainfall. For insight into the formation mechanism of the warm sector squall line, the environmental conditions, formation and structure of the squall line were further analyzed by using varieties of observation data. The results showed that the stranded cold temperature trough ahead of upper trough was beneficial to strongly convective instability. Meanwhile, the lower strong warm and moist air advection played a leading role in establishing static instability. The diagram of T-lnP indicated that the environmental conditions of the southern part of Guangxi were more conducive to the development and organizational reinforcement of convection than that of the northern part. In addition, the cold pool outflow interacting with lower environmental wind field was the main mechanism for the squall line to develop and maintain. The squall line moved and developed toward the one hour katallobaric center ahead. Moreover, the squall line was given priority to dispersive transmission, along with a guiding streamline and the trailing stratiform cloud area.

参考文献

[1]Houze R A J, 1982. Cloud clusters and large-scale vertical motions in the tropics[J]. J Meteor Soc Japan, 60(1):396-410.
[2]Houze R A J, Rutledge S A, Biggerstaff M I, et al, 1989. Interpretation of Doppler weather-radar displays is midlatitude mesoscale convective systems[J]. Bull Amer Meteor Soc, 70(6):608-619.
[3]Kuo Y H, Chen G T J, 1990. The Taiwan area mesoscale experiment(TAMEX):An overview[J]. Bull Amer Meteor Soc, 71:488-503.
[4]Rotunno R, Klemp J B, Weisman M L, 1988. A theory for strong, long-lived squall lines[J]. J Atmos Sci, 45(3):463-485.
[5]Weisman M L, Klemp J B, 1984. The structure and classification of numerically simulated convective storms in directionally varying wind shears[J]. Mon Wea Rev, 112(12):2479-2498.
[6]Chen Y, Chen Y, Zhang T, et al, 2016. Characteristics analysis of warm sector rainstorms over the middle lower reaches of the Yangze River[J]. Meteor Mon, 42(6):724-731.<br/>陈玥, 谌芸, 陈涛, 等, 2016.长江中下游地区暖区暴雨特征分析[J].气象, 42(6):724-731.
[7]Chen Y Z, Yu X D, Chen X L, 2016. Characteristics of short time severe rainfall events based on weather flow and key environmental parameters in Pearl River Delta[J]. Meteor Mon, 42(2):144-155.<br/>陈元昭, 俞小鼎, 陈训来, 2016.珠江三角洲地区重大短时强降水的基本流型与环境参量特征[J].气象, 42(2):144-155.
[8]He L F, Chen T, Kong Q, 2016. A review of studies on prefrontal torrential rain in South China[J]. J App Meteor Sci, 27(5):559-569.<br/>何立富, 陈涛, 孔期, 2016.华南暖区暴雨研究进展[J].应用气象学报, 27(5):559-569.
[9]He Q Q, Lu H C, Zhang M, 1992. A mesoscale study of squall line in warm sector of Jianghuai Area[J]. Acta Meteor Sinica, 50(3):290-300.<br/>何齐强, 陆汉城, 张铭, 1992.江淮地区暖区飑线中尺度观测研究[J].气象学报, 50(3):290-300.
[10]Huang T S, 1986. Torrential Rain of Pre-flood season in South China[M]. Guangzhou:Guangdong Science and Technology Press, 94-95.<br/>黄士松, 1986.华南前汛期暴雨[M].广州:广东科技出版社, 94-95.
[11]Shou S W, Li S S, Yao X P, 2003. Mesoscale meteorology[M]. Beijing:China Meteorological Press, 197.<br/>寿绍文, 励申申, 姚秀萍, 2003.中尺度气象学[M].北京:气象出版社, 197.
[12]Sun J S, Dai J H, He L F, et al, 2014. The basic principle and technical method of strong convective weather forecast[M]. Beijing:China Meteorological Press, 83-86.<br/>孙继松, 戴建华, 何立富, 等, 2014.强对流天气预报的基本原理与技术方法[M].北京:气象出版社, 83-86.
[13]Wang B J, Kong X W, Fu C, et al, 2016. Analysis on mesoscale characteristics of a rainstorm process in Southeastern Gansu[J]. Plateau Meteor, 35(6):1551-1564. DOI:10.7522/j.issn. 1000-0534.2015.00114.<br/>王宝鉴, 孔祥伟, 傅朝, 等, 2016.甘肃陇东南一次大暴雨的中尺度特征分析[J].高原气象, 35(6):1551-1564.
[14]Wang X L, Wang H Y, Wang S S, et al, 2015. Analysis on mechanism of mesoscale rainstorm triggered by quasi-stationary dryline in boundary layer[J]. Plateau Meteor, 34(5):1310-1322. DOI:10.7522/j.issn. 1000-0534.2014.00056.<br/>王晓玲, 王海燕, 王珊珊, 等, 2015.边界层准静止干线触发的中尺度暴雨机理分析[J].高原气象, 34(5):1310-1322.
[15]Xu A H, Zhang Y, Liu X Z, 2001. Diagnosis of thermal and dynamic conditions of warm area severe convection in Jiangxi Province[J]. Meteor Mon, 27(5):30-34.<br/>许爱华, 张瑛, 刘献耀, 2001.江西"暖区"强对流天气的热力和动力条件诊断分析[J].气象, 27(5):30-34.
[16]Xu A H, Sun J S, Xu D B, et al, 2014. Basic synoptic situation classification and element character of severe convection in China[J]. Meteor Mon, 40(4):400-411.<br/>许爱华, 孙继松, 许东蓓, 等, 2014.中国中东部强对流天气的天气形势分类和基本要素配置特征[J].气象, 40(4):400-411.
[17]Xu Y, Yan J H, Wang Q Q, et al, 2013. A low-level gravity wave triggering mechanism for rainstorm of warm zone in South China[J]. Plateau Meteor, 32(4):1050-1061. DOI:10.7522/j.issn. 1000-0534.2012.00100.<br/>徐燚, 闫敬华, 王谦谦, 等, 2013.华南暖区暴雨的一种低层重力波触发机制[J].高原气象, 32(4):1050-1061.
[18]Zhang X M, Meng W G, Zhang Y X, et al, 2009. Analysis of mesoscale convective systems associated with a warm sector heavy rainfall event over South China[J]. J Trop Meteor, 25(5):551-560.<br/>张晓美, 蒙伟光, 张艳霞, 等, 2009.华南暖区暴雨中尺度对流系统的分析[J].热带气象学报, 25(5):551-560.
[19]Zhao Q Y, Fu C, Liu X W, et al, 2017. Characteristics of mesoscale system evolution of torrential rain in warm sector over Northwest China[J]. Plateau Meteor, 36(3):697-704. DOI:10.7522/j.issn. 1000-0534.2016.00140.<br/>赵庆云, 傅朝, 刘新伟, 等, 2017.西北东部暖区大暴雨中尺度系统演变特征[J].高原气象, 36(3):697-704.
[20]Zhai G Q, Yu Z X, 1992. The surface characteristics of wind field prior to the occurrence of severe convection weather[J]. Chinese Atmos Sci, 5(16):522-529.<br/>翟国庆, 俞樟孝, 1992.强对流天气发生前期地面风场特征[J].大气科学, 5(16):522-529.
[21]Zhai L P, Nong M S, Qu M F, et al, 2013. Analysis of different types of severe convective weather cases under the same large-scale circulation[J]. Torrential Rain Disasters, 32(4):346-353.<br/>翟丽萍, 农孟松, 屈梅芳, 等, 2013.相同大尺度环流背景下不同类型强对流天气个例分析[J].暴雨灾害, 32(4):346-353.
[22]Zhen Y Y, Zhang X C, Zhu H F, et al, 2014. Study of squall line genesis with northeast cold vortex[J]. Plateau Meteor, 33(1):261-269. DOI:10.7522/j.issn. 1000-0534.2013.00005.<br/>郑媛媛, 张雪晨, 朱红芳, 等, 2014.东北冷涡对江淮飑线生成的影响研究[J].高原气象, 33(1):261-269.
[23]Zhu Q G, Lin J R, Shou S W, et al, 2000. Principle of aynoptic meteorology[M]. Beijing:China Meteorological Press, 55-60.<br/>朱乾根, 林锦瑞, 寿绍文, 等, 2000.天气学原理和方法[M].北京:气象出版社, 55-60.
文章导航

/