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DOI | 10.1029/2018JD029832 |
Convection Initiation Resulting From the Interaction Between a Quasi-Stationary Dryline and Intersecting Gust Fronts: A Case Study | |
Bai, Lanqiang1,2,3; Meng, Zhiyong1; Huang, Yipeng4; Zhang, Yunji5,6; Niu, Shuzhen7; Su, Tao8 | |
2019-03-16 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2019 |
卷号 | 124期号:5页码:2379-2396 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | This study explores the convection initiation (CI) of a high-impact squall line that occurred in central eastern China on 3 June 2009 based on observations and numerical modeling. The CI occurred in a scenario in which a set of intersecting gust fronts, organized in a distinct scalloped pattern, propagated toward an area of enhanced moisture produced by a near-surface convergence line. This convergence line developed in a quasi-stationary dryline zone. The dryline primed the preconvective environment by deepening the moist layer prior to the arrival of the intersecting gust fronts. The onset of CI occurred approximately 30 min after these intersecting gust fronts passed through the CI location, which was on the dry side of the dryline. Although these gust fronts acted as a strong signal for CI potential, CI did not occur along the entire length of the scalloped pattern of the intersecting gust fronts. The exact locations of the initiated convective cells were at the vertices of the scalloped pattern. An idealized simulation using a cloud model was conducted, demonstrating that the vertex regions were characterized by more favorable dynamical conditions for CI compared to the nonvertex regions along the scalloped outflow boundary. The greater CI probability over the vertex region was attributed to the greater magnitudes and larger vertical and horizontal extents of updrafts. |
英文关键词 | convection initiation dry line gust front squall line cold vortex China |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000462139800001 |
WOS关键词 | 12 JUNE 2002 ; THUNDERSTORM OUTFLOWS ; MOIST CONVECTION ; PART I ; NUMERICAL-SIMULATION ; OKLAHOMA DRYLINE ; EVOLUTION ; DOPPLER ; VARIABILITY ; SUPERCELL |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/181665 |
专题 | 气候变化 |
作者单位 | 1.Peking Univ, Lab Climate & Ocean Atmosphere Studies, Dept Atmospher & Ocean Sci, Sch Phys, Beijing, Peoples R China; 2.Sun Yat Sen Univ, Ctr Monsoon & Environm Res, Sch Atmospher Sci, Guangzhou, Guangdong, Peoples R China; 3.Sun Yat Sen Univ, Guangdong Prov Key Lab Climate Change & Nat Disas, Guangzhou, Guangdong, Peoples R China; 4.Xiamen Meteorol Bur, Lab Straits Meteorol, Xiamen, Peoples R China; 5.Penn State Univ, Dept Meteorol & Atmospher Sci, University Pk, PA 16802 USA; 6.Penn State Univ, Ctr Adv Data Assimilat & Predictabil Tech, University Pk, PA 16802 USA; 7.Henan Meteorol Bur, Zhengzhou, Henan, Peoples R China; 8.Zhejiang Inst Meteorol Sci, Hangzhou, Zhejiang, Peoples R China |
推荐引用方式 GB/T 7714 | Bai, Lanqiang,Meng, Zhiyong,Huang, Yipeng,et al. Convection Initiation Resulting From the Interaction Between a Quasi-Stationary Dryline and Intersecting Gust Fronts: A Case Study[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2019,124(5):2379-2396. |
APA | Bai, Lanqiang,Meng, Zhiyong,Huang, Yipeng,Zhang, Yunji,Niu, Shuzhen,&Su, Tao.(2019).Convection Initiation Resulting From the Interaction Between a Quasi-Stationary Dryline and Intersecting Gust Fronts: A Case Study.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,124(5),2379-2396. |
MLA | Bai, Lanqiang,et al."Convection Initiation Resulting From the Interaction Between a Quasi-Stationary Dryline and Intersecting Gust Fronts: A Case Study".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 124.5(2019):2379-2396. |
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