Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018JD028418 |
An Extreme Rainfall Event in Coastal South China During SCMREX-2014: Formation and Roles of Rainband and Echo Trainings | |
Liu, Xi1,2; Luo, Yali2,3; Guan, Zhaoyong1,2; Zhang, Da-Lin3,4,5 | |
2018-09-16 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2018 |
卷号 | 123期号:17页码:9256-9278 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | In this study, an extreme rainfall event of 451mm in 20hr that occurred in coastal South China on 11 May 2014 during the Southern China Monsoon Rainfall Experiment is investigated using integrated observations from the dual-Doppler radar pair, polarimetric radar, extensive mesonetwork, and enhanced upper-air soundings. Results show the generation of the extreme rainfall by two consecutive mesoscale convective systems (MCSs) consisting of multiple meso--scale rainbands. The two MCSs are maintained by lifting southerly oceanic flows over a quasi-stationary mesoscale outflow boundary (MOB) along the coastline that are enhanced by convectively generated weak cold pool. Northeastward echo training of convective cells, under the influence of environmental southwesterly flows, leads to the formation of the multiple rainbands in each MCS. Their subsequent propagations in a rainband training form, together with the echo training, along the coastline account for the production of extreme rainfall. The second MCS is characterized with a leading bowing rainband showing a process of rapid splitting and reestablishment (RSRE), which contributes to the formation of the rainband training. The occurrence of the RSRE process requires ample supply of unstable upstream oceanic air mass, the quasi-stationary MOB, and a bowing rainband intersecting with the MOB. The second MCS produces more precipitation than the first one as a result of more rainbands, stronger convective intensity, and more moderate-sized raindrops with larger maximal sizes. The above findings, especially the RSRE process and its associated storm internal circulation, appear to add new Insights into the formation and maintenance of training rainbands and their roles in heavy rainfall production. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000445617500020 |
WOS关键词 | MESOSCALE CONVECTIVE SYSTEMS ; HYDROMETEOR CLASSIFICATION ALGORITHM ; SQUALL LINE ; REAR-INFLOW ; BOW ECHOES ; STRATIFORM PRECIPITATION ; PRESSURE PERTURBATIONS ; MONSOON RAINFALL ; SUMMER MONSOON ; DIURNAL CYCLE |
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/32283 |
专题 | 气候变化 |
作者单位 | 1.Nanjing Univ Informat Sci & Technol, Key Lab Meteorol Disasters, China Minist Educ, Nanjing, Jiangsu, Peoples R China; 2.Nanjing Univ Informat Sci & Technol, Collaborat Innovat Ctr Forecast & Evaluat Meteoro, Nanjing, Jiangsu, Peoples R China; 3.Chinese Acad Meteorol Sci, State Key Lab Severe Weather, Beijing, Peoples R China; 4.Univ Maryland, Dept Atmospher & Ocean Sci, College Pk, MD 20742 USA; 5.Univ Maryland, Ctr Sci Computat & Math Modeling, College Pk, MD 20742 USA |
推荐引用方式 GB/T 7714 | Liu, Xi,Luo, Yali,Guan, Zhaoyong,et al. An Extreme Rainfall Event in Coastal South China During SCMREX-2014: Formation and Roles of Rainband and Echo Trainings[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2018,123(17):9256-9278. |
APA | Liu, Xi,Luo, Yali,Guan, Zhaoyong,&Zhang, Da-Lin.(2018).An Extreme Rainfall Event in Coastal South China During SCMREX-2014: Formation and Roles of Rainband and Echo Trainings.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,123(17),9256-9278. |
MLA | Liu, Xi,et al."An Extreme Rainfall Event in Coastal South China During SCMREX-2014: Formation and Roles of Rainband and Echo Trainings".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 123.17(2018):9256-9278. |
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