2017—2021年冷涡背景下辽宁短时强降水时空分布及环境参数特征

doi:10.3969/j.issn.1673-503X.2025.04.004

Abstract

Abstract: Based on hourly precipitation data from automatic weather stations in Liaoning Province and ERA5 reanalysis data from 2017 to 2021,the short-duration heavy rain (CV_SDHR) with hourly rainfall no less than 20 mm under the background of the Cold Vortex (CV) was selected and divided into different quadrants based on the relative position of the automatic weather stations and the 500 hPa potential height center of the CV.The highest occurrence frequency of CV centers lies between the eastern Inner Mongolia (110°～124°E) and the northern Heilongjiang(48°N),up to 58°N when CV_SDHR occurs.The spatiotemporal distribution and environmental parameter characteristics of SDHR in different quadrants were compared.The results show that CV_SDHR accounts for 35.7% of the total SDHR.The proportion of CV_SDHR in different quadrants decreases in the following order:southeast (SE_SDHR),southwest (SW_SDHR),northeast,and northwest quadrants.CV_SDHR with large hourly rainfall and wide impact range is mainly concentrated in the southeast and southwest quadrants of CV.The central and northern parts of Liaoning is a high-risk area for CV_SDHR.The stations dominated by SE_SDHR cover the Liaohe River Basin and coastal areas,while the stations dominated by SW_SDHR are concentrated in northern part of Liaoning.CV_SDHR exhibits monthly and daily variation characteristics with unimodal distribution.It mainly appears in the afternoon to evening from July to August,but with variations in different quadrants regarding the peak proportion,occurrence time,and duration.The similarity of CV_SDHR in different quadrants is that the temperature and humidity profiles are closer,the CAPE is narrower,and the wind field is conducive to the formation of vertical wind shear.The difference is that SE_SDHR often occurs in warmer and wetter environments,and has stronger and vertical wind shear,which is more conducive to the occurrence of stronger and larger range of CV_SDHR.The SW_SDHR appears in environments with dry water vapor,strong static instability,and lower relative humidity near the ground,making it more conducive to the simultaneous occurrence of multiple severe convective weathers.

Key words: Cold Vortex, Short-duration heavy rain, Strong convective parameters

CLC Number:

P426

CAO Shiteng, YANG Lei, SUN Li, LU Juan, CHEN Yu, YANG Xue, JIANG Chao, LENG Yuxuan. The spatiotemporal distribution and environmental parameter characteristics of short-duration heavy rain in Liaoning under the background of Cold Vortex from 2017 to 2021[J]. Journal of Meteorology and Environment, 2025, 41(4): 28-38.

References

[1] Doswell III C A,Brooks H E,Maddox R A.Flash flood forecasting:an ingredients-based methodology[J].Weather and Forecasting,1996,11(4):560-581.
[2] 俞小鼎,郑永光.中国当代强对流天气研究与业务进展[J].气象学报,2020,78(3):391-418.
[3] 孙继松.短时强降水和暴雨的区别与联系[J].暴雨灾害,2017,36(6):498-506.
[4] 田付友,郑永光,张涛,等.我国中东部不同级别短时强降水天气的环境物理量分布特征[J].暴雨灾害,2017,36(6):518-526.
[5] 田付友,张小玲,曹艳察,等.中国中低海拔地区三类强对流天气环境条件的基本气候特征[J].高原气象,2022,41(6):1446-1459.
[6] 石娟,蒋贤玲,柯元惠,等.2012—2021年海南岛极端短时强降水特征及其成因分析[J].气象与环境学报,2023,39(2):62-70.
[7] Luo Y L,Wu M,Ren F,et al.Synoptic Situations of Extreme Hourly Precipitation over China[J].Journal of Climate,2016,29(24):8703-8719.
[8] 黄艳,俞小鼎,陈天宇,等.南疆短时强降水概念模型及环境参数分析[J].气象,2018,44(8):1033-1041.
[9] 段云霞,李得勤,纪永明,等.东北冷涡背景下沈阳地区一次强降水过程分析[J].气象与环境学报,2022,38(4):1-10.
[10] 李崇,吉曹翔,夏传栋,等.沈阳地区强对流天气潜势预报环境参数特征分析[J].气象与环境学报,2016,32(6):43-51.
[11] Chen J,Zheng Y G,Zhang X L,et al.Distribution and diurnal variation of warm-season short-duration heavy rainfall in relation to the MCSs in China[J].Journal of Meteorological Research,2013,27(6):868-888.
[12] Wang G L,Zhang D L,Sun J S.A multiscale analysis of a nocturnal extreme rainfall event of 14 July 2017 in Northeast China[J].Monthly Weather Review,2021,149(1):173-187.
[13] 李燕,赛瀚,刘静,等.辽宁省短时强降水气候特征分析[J].气象与环境学报,2017,33(4):56-63.
[14] 杨磊,郑永光,袁子鹏,等.2019年8月16日沈阳极端降水事件的低空γ中尺度涡旋观测特征分析[J].气象学报,2023,81(1):19-39.
[15] 祁璇,平凡,沈新勇.云微物理对一次吉林暖区降水过程的影响[J].大气科学,2021,45(5):943-964.
[16] Luo Y L,Wu M W,Ren F M,et al.Synoptic situations of extreme hourly precipitation over China[J].Journal of Climate,2016,29(24):8703-8719.
[17] 刘金卿,刘红武,徐靖宇.西南涡引发的强对流天气特征[J].高原气象,2021,40(3):525-534.
[18] 何晗,谌芸,肖天贵,等.冷涡背景下短时强降水的统计分析[J].气象,2015,41(12):1466-1476.
[19] 李爽,丁治英,刘云桦,等.东北冷涡下辽宁省短时强降水统计与合成分析[J].气象科学,2017,37(1):70-77.
[20] 陈相甫,赵宇.冷涡背景下东北地区短时强降水统计特征[J].高原气象,2021,40(3):510-524.
[21] 俞小鼎.短时强降水临近预报的思路与方法[J].暴雨灾害,2013,32(3):202-209.
[22] 郑永光,宋敏敏.冷涡影响中国对流性大风与冰雹的分布特征[J].热带气象学报,2021,37(5/6):710-720.
[23] 杨磊,郑永光.东北地区雷暴大风观测特征及其与东北冷涡的关系研究[J].气象学报,2023,81(3):416-429.
[24] 孙力,郑秀雅,王琪.东北冷涡的时空分布特征及其与东亚大型环流系统之间的关系[J].应用气象学报,1994,5(3):297-303.
[25] 黄丽君,崔晓鹏.2000—2019年东北冷涡统计特征及其影响期间的降水分布[J].大气科学, 2023,47(6):1925-1938.
[26] 俞小鼎,郑永光.中国当代强对流天气研究与业务进展[J].气象学报,2020,78(3):391-418.
[27] 樊李苗,俞小鼎.中国短时强对流天气的若干环境参数特征分析[J].高原气象,2013,32(1):156-165.
[28] 孙继松,陶祖钰.强对流天气分析与预报中的若干基本问题[J].气象,2012,38(2):164-173.
[29] 王秀明,周小刚,俞小鼎.短时强降水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.
[30] Johns R H,Doswell III C A.Severe local storms forecasting[J].Weather and Forecasting,1992,7(4):588-612.
[31] Weisman M L,Klemp J B.The dependence of numerically simulated convective storms on vertical wind shear and buoyancy [J].Monthly Weather Review,1982,110(6):504-520.
[32] Nielsen E R,Schumacher R S.Dynamical insights into extreme short-term precipitation associated with supercells and mesovortices[J].Journal of the Atmospheric Sciences,2018,75(9):2983-3009.
[33] Nielsen E R,Schumacher R S.Observations of extreme short-term precipitation associated with supercells and mesovortices[J].Monthly Weather Review,2020,148(1):159-182.

The spatiotemporal distribution and environmental parameter characteristics of short-duration heavy rain in Liaoning under the background of Cold Vortex from 2017 to 2021

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Metrics

Comments

Recommended 0

[1]	Xuxuan JIA, Yongming JI, Yunxia DUAN, Xiaochu LIU, Jun LIANG. Comparative analysis of two thunderstorm gale events triggered by wet microbursts over the Liaodong Peninsula [J]. Journal of Meteorology and Environment, 2024, 40(6): 1-9.
[2]	Liman CUI,Xiujie GU,Le XI,Yachun ZHANG,Ziyue XUE. Causes analysis of extreme snowstorm and lightning in He'nan province in March of 2023 [J]. Journal of Meteorology and Environment, 2024, 40(4): 10-18.
[3]	Qingyuan GAO,Wei JIN,Qingquan GAO,Qingzhe XU,Lu TIAN,Dongxia LIU,Guojing HAN. Diagnostic analysis of the extreme rain-snow process in Liaoning province from November 7-9, 2021 [J]. Journal of Meteorology and Environment, 2024, 40(2): 1-8.
[4]	Shuyang MA,Yongsheng LI,Jin BAN,Jiaying ZHAO,Ying WANG. Characteristics of climate impact of Northeast China Cold Vortex during spring sowing period in Heilongjiang province from 1961 to 2021 [J]. Journal of Meteorology and Environment, 2024, 40(2): 34-40.
[5]	Lili SHEN,Jiangbo LI,Xiuming WANG,Qi ZHONG,Wenqing LI,Zhuo SUN. Comparative analysis of the environmental characteristics of short-duration heavy rainfall in the warm season in the Beijing-Tianjin-Hebei region [J]. Journal of Meteorology and Environment, 2024, 40(1): 37-46.
[6]	Tingting ZHAO, Xin MENG, Lingfeng GAO, Zewen ZHOU, Hailong LIU, Jing GAO. Diagnosis and analysis of the extreme blizzard in Liaoning province from 6 to 9, November, 2021 [J]. Journal of Meteorology and Environment, 2023, 39(6): 10-17.
[7]	Pengyu HU,Shuang XU,Shibo GENG,Chuanlei CHEN,Chang SU,Shengyuan CHEN. Characteristic analysis of thunderstorm gale process in Shenyang under a background of cold vortex [J]. Journal of Meteorology and Environment, 2023, 39(5): 9-18.
[8]	Shiteng CAO, Lei YANG, Yu CHEN, Li SUN, Yuxuan LENG, Chao JIANG, Xue YANG. Characteristics of spatio-temporal distribution and environmental parameters of Cold Vortex thunderstorm gales in Liaoning province from 2017 to 2021 [J]. Journal of Meteorology and Environment, 2023, 39(4): 65-73.
[9]	Yu CHEN, Shi-teng CAO, Chuan-lei CHEN, Ying WANG, Yei YANG, Chao YUAN, Xue YANG, Chao JIANG, Qi-lin ZHANG, Man-li WU. Analysis of the formation and evolution of super tornado occurred in Kaiyuan of Liaoning province on July 3, 2019 [J]. Journal of Meteorology and Environment, 2023, 39(2): 11-19.
[10]	Li REN, Chen LUAN, Xiao-xue WANG, Yue ZHANG. Causes and characteristics of a persistent rainstorm event in warm front of a cold vortex [J]. Journal of Meteorology and Environment, 2022, 38(3): 37-44.
[11]	Qi YAN, Shuang LI, Jing-long LU, Fang-da TENG. Characteristics of the continuous cold vortex over Northeast China from 1979 to 2019 [J]. Journal of Meteorology and Environment, 2022, 38(2): 40-45.
[12]	Yi-he FANG,Chun-yu ZHAO,Yang LI,Ting-ting GUO,Jing-wei LI,Yi-tong LIN,Mei-ou QIN,Yi-qiu YU. A review on climatological research of cold vortex in Northeast China [J]. Journal of Meteorology and Environment, 2022, 38(1): 92-99.
[13]	Xue-qiang WANG,Hui-jie DONG. Local dust weather process caused by a mesoscale convective storm in Inner Mongolia Autonomous Region [J]. Journal of Meteorology and Environment, 2021, 37(6): 11-19.
[14]	Peng-yu HU, Chuan-lei CHEN, Hai-feng LIN, Shuang XU, Ling-jun KONG, Qing LIU, Yong-ming JI, Zi-qi ZHAO. Definition and characteristics analysis of the intensity of Northeast Cold Vortex [J]. Journal of Meteorology and Environment, 2021, 37(6): 100-105.
[15]	Jin-guang ZHANG, Shu-hui ZHAO, Yang LIU, Li SUN, Nan SHAN, Tie-ning ZHANG, Meng-jia ZHANG. Observations and analysis of vertical structure of cloud and precipitation caused by a cold vortex in Northeast China [J]. Journal of Meteorology and Environment, 2021, 37(4): 1-8.