Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/joc.4917 |
Characteristics of mesoscale convective systems in central East China and their reliance on atmospheric circulation patterns | |
He, Zhiwei1; Zhang, Qinghong1,2; Bai, Lanqiang1; Meng, Zhiyong1 | |
2017-06-15 | |
发表期刊 | INTERNATIONAL JOURNAL OF CLIMATOLOGY |
ISSN | 0899-8418 |
EISSN | 1097-0088 |
出版年 | 2017 |
卷号 | 37期号:7 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | Based on mosaics of composite radar reflectivity for a 4-year period from July 2007 to June 2011, a total of 354 mesoscale convective systems (MCSs) over central East China were identified and their characteristics were investigated. Using the objective classification method of obliquely rotated principal analysis in T mode, the atmospheric circulation patterns over central East China were classified into nine typical types based on the geopotential height fields at 850 hPa. It was found that 62.2% of daytime MCSs and 67.7% of nocturnal MCSs occurred in meridional atmospheric circulations, which were associated with the Western North Pacific Subtropical High (WNPSH) to the east and a low-pressure system to the west. The relationship between atmospheric circulation types and characteristics of MCSs was also investigated. Composite analyses revealed two different atmospheric circulation patterns at 500 hPa in meridional atmospheric circulations, the pre-short-trough pattern and the cold vortex pattern. The former featured relatively stronger vertical wind shear, warm advection, and convergence at the exit region of low-level jets (LLJs), while the latter was associated with relatively stronger frontal zones and frontogenesis process. Numbers of MCSs decreased significantly from 2008 to 2010, which might be attributed to changes in the location of WNPSH, the trough to the west and LLJs between the two systems. |
英文关键词 | MCSs central East China objective classification large-scale atmospheric circulation |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000404851400017 |
WOS关键词 | WARM-SEASON PRECIPITATION ; EXTREME RAIN EVENTS ; UNITED-STATES ; ORGANIZATIONAL MODES ; DIURNAL-VARIATION ; SOUTHEAST CHINA ; HEAVY-RAINFALL ; YELLOW SEA ; SCALE ; COMPLEXES |
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/37672 |
专题 | 气候变化 |
作者单位 | 1.Peking Univ, Sch Phys, Dept Atmospher & Ocean Sci, Lab Climate & Ocean Atmosphere Studies, Beijing, Peoples R China; 2.NUIST, Collaborat Innovat Ctr Forecast & Evaluat Meteoro, Nanjing, Jiangsu, Peoples R China |
推荐引用方式 GB/T 7714 | He, Zhiwei,Zhang, Qinghong,Bai, Lanqiang,et al. Characteristics of mesoscale convective systems in central East China and their reliance on atmospheric circulation patterns[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2017,37(7). |
APA | He, Zhiwei,Zhang, Qinghong,Bai, Lanqiang,&Meng, Zhiyong.(2017).Characteristics of mesoscale convective systems in central East China and their reliance on atmospheric circulation patterns.INTERNATIONAL JOURNAL OF CLIMATOLOGY,37(7). |
MLA | He, Zhiwei,et al."Characteristics of mesoscale convective systems in central East China and their reliance on atmospheric circulation patterns".INTERNATIONAL JOURNAL OF CLIMATOLOGY 37.7(2017). |
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