Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1007/s00382-018-4090-x |
Circulation structures leading to propagating and non-propagating heavy summer rainfall in central North China | |
Sun, Wei1,2; Li, Jian3; Yu, Rucong3; Yuan, Weihua2 | |
2018-11-01 | |
发表期刊 | CLIMATE DYNAMICS |
ISSN | 0930-7575 |
EISSN | 1432-0894 |
出版年 | 2018 |
卷号 | 51页码:3447-3465 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | Using 30 years of hourly rain gauge records and reanalysis data, this paper reveals two types of heavy summer rainfall in central North China (CNC): the lasting mountain (LM) rainfall and the mountain-plain (MP) rainfall, and further explains their formation mechanisms. The evolutions of the rainfall are found to be closely connected to upper-tropospheric temperature anomalies. When upper-tropospheric warm (cold) anomalies dominate North China (the Japan Sea) and stretch down to lower layers, positive (negative) geopotential anomalies, which appear above the warm (cold) anomalies governed by hydrostatic equilibrium, extend from upper to lower troposphere. In the lower layers, evident low-level easterly anomalies form to the south (north) of the positive (negative) geopotential center, controlling the downstream of CNC and making convective systems difficult to progress eastward. Correspondingly, the low-level convergence and strong convection maintain in the west, and the rainfall persists over the mountains constituting the LM process. But when upper-tropospheric cold (warm) anomalies dominate the west (east) of 110 degrees E and stretch down to lower layers, CNC is situated between an upstream trough and a downstream ridge. As the trough-ridge system progresses eastward, the low-level moisture tongue and strong convections in front of the trough move from the mountains to the plains, and the rainfall propagates downstream constituting the MP process. Results in this paper indicate that upper-tropospheric temperature has significant influence on the evolution of rainfall, and pay attention to its characteristics could provide helpful information in the analysis and forecasting of rainfall propagation. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000447366100016 |
WOS关键词 | WARM-SEASON PRECIPITATION ; NOCTURNAL SQUALL LINE ; LOW-LEVEL JET ; MESOSCALE ; CONVECTION ; GENERATION |
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/36431 |
专题 | 气候变化 |
作者单位 | 1.Chinese Acad Sci, Natl Space Sci Ctr, CAS Key Lab Microwave Remote Sensing, Beijing, Peoples R China; 2.Chinese Acad Sci, Inst Atmospher Phys, LASG, Beijing, Peoples R China; 3.China Meteorol Adm, Chinese Acad Meteorol Sci, LaSW, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | Sun, Wei,Li, Jian,Yu, Rucong,et al. Circulation structures leading to propagating and non-propagating heavy summer rainfall in central North China[J]. CLIMATE DYNAMICS,2018,51:3447-3465. |
APA | Sun, Wei,Li, Jian,Yu, Rucong,&Yuan, Weihua.(2018).Circulation structures leading to propagating and non-propagating heavy summer rainfall in central North China.CLIMATE DYNAMICS,51,3447-3465. |
MLA | Sun, Wei,et al."Circulation structures leading to propagating and non-propagating heavy summer rainfall in central North China".CLIMATE DYNAMICS 51(2018):3447-3465. |
条目包含的文件 | 条目无相关文件。 |
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