WANG Lingling,LIU Aiwei,DUAN Xiurong,et al.Analysis of the Characteristics and Causes of an Extreme Squall Line Wind Event in the Sichuan Basin During Spring[J].Journal of Chengdu University of Information Technology,2026,41(02):199-208.[doi:10.16836/j.cnki.jcuit.2026.02.010]
四川盆地春季一次飑线极端大风天气特征及成因分析
- Title:
- Analysis of the Characteristics and Causes of an Extreme Squall Line Wind Event in the Sichuan Basin During Spring
- 文章编号:
- 2096-1618(2026)02-0199-10
- 分类号:
- P458.1+1
- 文献标志码:
- A
- 摘要:
- 为提高四川盆地春季强对流天气的预报预警能力,利用观测、ERA5、雷达等资料,从热力、动力、层结条件、雷达卫星等特征对四川盆地春季一次极端强对流天气进行分析。结果表明:(1)过程发生在高空低槽加深东移、动量下传增强和锋面动力抬升强烈条件下。(2)前期能量累积大,低层西南暖湿气流输送、较强垂直风切变、低层辐散高层辐合均提供了极不稳定环境条件。(3)中层干冷空气夹卷加速下沉气流,形成下击暴流,增强地面出流强度。(4)弓形回波、冷池的扩大增强了前后冷暖入流的强度和范围,利于雷暴大风组织化发展。因此,锋面动力抬升、极不稳定的环境条件、垂直风切变、动量下传、冷池扩大及干入侵均对过程发展增强有指示性。
- Abstract:
- To improve the forecasting and early warning capabilities of severe convective weather in spring in the Sichuan Basin, observations, ERA5, radar, and other data were used to analyze an extremely severe convective weather event in spring in the Sichuan Basin from the characteristics of thermodynamics, dynamics, stratification conditions, radar satellites, etc. The results indicate that:(1)the process occurs under the conditions of deepening and eastward movement of the high-altitude trough, enhanced momentum transfer, and strong frontal dynamic uplift.(2)The large accumulation of energy in the early stage, coupled with the transport of warm and humid southwest airflow in the lower layers, strong vertical wind shear, low-level divergence, and high-level convergence, all provide extremely unstable environmental conditions.(3)Middle-level dry and cold air entrainment accelerates the sinking airflow, forming a downburst and enhancing the strength of surface outflow.(4)The bow-shaped echo and the expansion of the cold pool enhance the intensity and range of the cold and warm inflow before and after, which is conducive to the organized development of thunderstorms and strong winds. Therefore, the dynamic uplift of the front, extremely unstable environmental conditions, vertical wind shear, momentum transfer, expansion of the cold pool, and dry invasion all indicate the enhancement of process development.
参考文献/References:
[1] 龙柯吉,康岚,罗辉,等.四川盆地雷暴大风雷达回波特征统计分析[J].气象,2020,46(2):212-222.
[2] 王晓娟.四川盆地南部边缘一次局地风雹天气的中尺度及雷达观测分析[J].高原山地气象研究,2016,36(2):75-81.
[3] 四川省气象局著.四川省预报员手册[M].成都:西南交通大学出版社,2014:157-165.
[4] 郑永光,陶祖钰.俞小鼎.强对流天气预报的一些基本问题[J].气象,2017,43(6):641-652.
[5] 周长青,徐冬英,徐靖宇,等.2016年春季湖南一次连续冰雹天气过程个例分析[J].气象研究与应用,2017,38(4):22-26+120.
[6] 陈云辉,许爱华,许彬,等.江西一次极端雷暴大风过程的中尺度特征与成因分析[J].暴雨灾害,2019,38(2):126-134.
[7] 王君军,王彪,周博扬.2017年4月5日贵阳一次飑线天气过程综合分析[J].中低纬山地气象,2018,42(2):36-40.
[8] 康红,费建芳,黄小刚,等.一次飑线过程的双多普勒雷达风场反演分析[J].解放军理工大学学报(自然科学版),2017,18(2):111-117.
[9] 许爱华,孙继松,许东蓓,等.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,2014,40(4):400-411.
[10] Smull B F,Houze JR R A.A mid-latitude squall line with a trailing region of stratiform rain:radar and satellite observations[J].Mon Wea Rev,1985,113(1):117-133.
[11] 王福侠,俞小鼎,裴宇杰,等.河北省雷暴大风的雷达回波特征及预报关键点[J].应用气象学报,2016,27(3):342-351.
[12] 杨新林,孙建华,鲁蓉,等.华南雷暴大风天气的环境条件分布特征[J].气象,2017,43(7):769-780.
[13] 王晓娟,邓荣耀,陈三春.四川盆地一次阵风锋触发的局地强对流天气雷达特征分析[J].高原山地气象研究,2018,38(2):62-66.
[14] 康岚,刘炜桦,肖递祥,等.四川盆地一次极端大风天气过程成因及预报着眼点分析[J].气象,2018,44(11):1414-1423.
[15] 李淑芳,王之义,郑家骅,等.四川省短期天气预报手册[M].成都:四川省气象局,1986.
[16] 陈永仁,康岚,曹萍萍,等.四川雷暴大风的预报因子筛选及预报效果[J].高原山地气象研究,2018,38(4):45-52.
[17] 费海燕,王秀明,周小刚,等.中国强雷暴大风的气候特征和环境参数分析[J].气象,2016,42(12):1513-1521.
[18] 俞小鼎,姚秀萍,熊廷南,等.多普勒天气雷达原理和业务应用[M].北京:气象出版社,2006:166-167.
[19] 段和平,马中元,谌芸,等.江西5月飑线天气雷达回波特征分析[J].沙漠与绿洲气象,2021,15(6):75-82.
[20] 农孟松,祁丽燕,黄海洪,等.桂西北一次超级单体风暴过程的分析[J].气象,2011,37(12):1519-1525.
[21] 王彦,唐熠,赵金霞,等.天津地区雷暴大风天气雷达产品特征分析[J].气象,2009,35(5):91-96,135.
[22] 赵俊荣,郭金强,杨景辉,等.一次致灾冰雹的超级单体风暴雷达回波特征分析[J].高原气象,2011,30(6):1681-1689.
[23] 肖红茹,王佳津,肖递祥,等.四川盆地暖区暴雨特征分析[J].气象,2021,47(3):303-316.
[24] 寿绍文.天气学分析[M].北京:气象出版社,2006:38-43.
[25] 章国材.强对流天气与预报[M].北京:气象出版社,2011:94-105.
[26] 陈永仁,康岚,曹萍萍,等.四川雷暴大风的预报因子筛选及预报效果[J].高原山地气象研究,2018,38(4):45-52.
[27] 农孟松,翟丽萍,屈梅芳,等.两种雷暴大风的结构特征及其环境条件对比分析[J].气象研究与应用,2019,40(2):1-6.
[28] Przybylinski R W.The bow echo:Observations,numerical simulations,and severe weather detection methods[J].Wea Forecasting,1995,10(2):203-218.
[29] 周虹,高青云,李晓容.南充雷暴大风天气学概念模型和环境物理量分析[J].高原山地气象研究,2018,38(4):53-59.
[30] 王秀明,俞小鼎,周小刚,等.“6.3”区域致灾雷暴大风形成及维持原因分析[J].高原气象,2012,31(2):504-514.
[31] 王秀明,周小刚,俞小鼎.雷暴大风环境特征及其对风暴结构影响的对比研究[J].气象学报,2013,71(5):839-852.
[32] Mccann.WINDEX-a new index for forecasting microburst potential[J].Weather and forecasting,1994,9(4):532-541.
[33] Atkins N T,Wakimoto R M.Wet microburst activity over the southeastern United States:Implications for forecasting[J].Weaforecasting,1991,6(4):470-482.
[34] Emanuel K A,Atmospheric Convection[M].New York:Oxford University Press,1994:158-165.
[35] Markowski P,Richardson Y,Mesoscale Meteorology in Midlatitudes[M].Chichester:Wiley-Blackwell,2010:245-265.
[36] 马月枝,王新红,叶东,等.一次春季冷锋过境引起的大风天气分析[J].气象与环境科学,2010,33(3):41-47.
[37] 吴木贵,张信华,傅伟辉,等.2010年3月5日闽北经典超级单体风暴天气过程分析[J].高原气象,2013,32(1):250-267.
[38] 高晓梅,俞小鼎,王令军,等,2018.鲁中地区分类强对流天气环境参量特征分析[J].气象学报,76(2):196-212.
[39] 沈杭锋,方桃妮,蓝俊倩,等.一次强飑线过程极端大风的中尺度分析[J].气象学报,2019,77(5):806-822.
[40] Gallus Jr W A,Snook N A,Johnson E V.Spring and summer severe weather reports over the midwest as a function of convective mode:A preliminary study[J].Wea Forecasting,2008,23(1):101-113.
[41] 侯淑梅,闵锦忠,刁秀广,等.飑线发展过程中回波合并的特征分析[J].大气科学学报,2018,41(3):367-376.
[42] 高彦青,孙璐,马旭林,等.飑线结构和强度对低层湿度和环境垂直风切变的敏感性研究[J].大气科学学报,2022,45(6):938-947.
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备注/Memo
收稿日期:2024-05-29
基金项目:高原与盆地暴雨旱涝灾害四川省重点实验室科技发展基金资助项目(SCQXKJQN202209)
通信作者:刘霭薇.E-mail:495710747@qq.com