A diagnostic case study on the comparison between the frontal and non-frontal convective systems
文献类型：期刊论文
| 作者 | Zhang Xiaohui1,2; Ni Yunqi3 |
| 刊名 | Acta meteorologica sinica
 |
| 出版日期 | 2010-02-01 |
| 卷号 | 24期号:1页码:66-77 |
| 关键词 | South china Mesoscale convective system (mcs) Convective instability Inertial instability Convective-symmetric instability Moist potential vorticity (mpv) |
| ISSN号 | 0894-0525 |
| 通讯作者 | Zhang xiaohui(zhangxiaoh09b@mails.gucas.ac.cn) |
| 英文摘要 | Two major mesoscale convective clusters of different characters occurred during the heavy rainfall event in guangxi region and guangdong province on 20 june 2005, and they are preliminarily identified as a frontal mesoscale convective system (mcs1; a frontal cloud cluster) and a non-frontal mcs (mcs2; a warm sector cloud cluster). comparative analyses on their convective intensity, maintenance mechanism, and moist potential vorticity (mpv) structure were further performed. the convective intensity analysis suggests that the ascending motion in both the frontal mcs1 and the warm sector mcs2 was strong, so it is hard to conclude whether the intensity of the frontal convective cluster was stronger than that of the non-frontal convective cluster, and their difference in precipitation might result from differences in their moisture conditions. the comparative analysis of the maintenance mechanisms of matured mcs1 and mcs2 show that in mcs1 there were strong northerly inflows at middle and upper levels, and the convection was mainly maintained through convective-symmetric instability; while in mcs2, the water vapor was abundant, and the convection was maintained by moist, convective instability. the structural analysis of mpv indicates that (1) the two clusters were both potentially symmetric unstable at middle and low levels; (2) there were interactions between the cold/dry air and the warm/wet air in the frontal mcs1, and the interactions between the upper- and low-level jets in the warm sector mcs2; (3) the high- and low-level jets and moisture condition nearby the convective clusters exerted different impacts on the two types of convective systems, respectively. |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| WOS类目 | Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000278908500006 |
| 出版者 | ACTA METEOROLOGICA SINICA PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2408830 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Zhang Xiaohui |
| 作者单位 | 1.Nanjing Univ, Coll Atmospher Sci, Nanjing 210093, Peoples R China 2.Chinese Acad Sci, Grad Univ, Coll Earth Sci, Beijing 100049, Peoples R China 3.CAMS, State Key Lab Severe Weather, Beijing 100081, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang Xiaohui,Ni Yunqi. A diagnostic case study on the comparison between the frontal and non-frontal convective systems[J]. Acta meteorologica sinica,2010,24(1):66-77. |
| APA | Zhang Xiaohui,&Ni Yunqi.(2010).A diagnostic case study on the comparison between the frontal and non-frontal convective systems.Acta meteorologica sinica,24(1),66-77. |
| MLA | Zhang Xiaohui,et al."A diagnostic case study on the comparison between the frontal and non-frontal convective systems".Acta meteorologica sinica 24.1(2010):66-77. |
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来源：中国科学院大学
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