Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/joc.4983 |
A statistical analysis of hourly heavy rainfall events over the Beijing metropolitan region during the warm seasons of 2007-2014 | |
Li, Huiqi1,2; Cui, Xiaopeng1,2,3; Zhang, Da-Lin4,5 | |
2017-09-01 | |
发表期刊 | INTERNATIONAL JOURNAL OF CLIMATOLOGY
![]() |
ISSN | 0899-8418 |
EISSN | 1097-0088 |
出版年 | 2017 |
卷号 | 37期号:11 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | A statistical analysis of the spatiotemporal characteristics of hourly heavy rainfall (HHR) events and rainstorm days, defined as greater than 20mmh(-1) and 50mmday(-1), respectively, is performed using observations at 5-min intervals from 155 automated weather stations (AWSs) over the Beijing metropolitan region (BMR) during the warm seasons of 2007-2014. Results show pronounced variability in the frequencies and rainfall amounts of both HHR events and rainstorm days across the BMR of less than 150km width from the west to east. That is, higher- (lower) frequency HHR events with more (less) accumulated rainfall amounts take place in eastern Haidian and over the BMR's northeast mountains (west and northwest mountains). Many extreme rainfall and even record-breaking events, in terms of the frequency, duration, rainfall amount and intensity, are found to occur in the regions of high-frequency HHR events and rainstorm days. The frequency of rainstorm days with HHR events accounts for more than 50% of that of total rainstorm days over the BMR's plains and near the northeast mountains. Results also show that HHR events occur most frequently in late July, and typically peak during 1600-2000 LST. A comparison of the averaged surface meteorological variables and upper-air sounding at 0800 LST between HHR and non-HHR days reveals that the occurrences of the HHR events coincide with the distribution of surface warmer and more humid air as well as organized convergence in the presence of an unstable environment with surface south- to southeasterly winds, low-level south to southwesterly flows and a deep layer of higher moisture content. These results suggest likely the positive influences of urban environment and mountain-plain circulations on the generation of the HHR events, given favourable larger-scale conditions. |
英文关键词 | hourly heavy rainfall rainstorm days extreme rainfall |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000409036800004 |
WOS关键词 | SUMMER PRECIPITATION ; DIURNAL-VARIATIONS ; EASTERN CHINA ; URBANIZATION ; INITIATION ; TAIWAN ; SYSTEM ; ISLAND |
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/37272 |
专题 | 气候变化 |
作者单位 | 1.Chinese Acad Sci, Inst Atmospher Phys, Key Lab Cloud Precipitat Phys & Severe Storms, Beijing 100029, Peoples R China; 2.Univ Chinese Acad Sci, Coll Earth Sci, Beijing, Peoples R China; 3.Nanjing Univ Informat Sci & Technol, Collaborat Innovat Ctr Forecast & Evaluat Meteoro, Nanjing, Jiangsu, Peoples R China; 4.Chinese Acad Meteorol Sci, State Key Lab Severe Weather, Beijing, Peoples R China; 5.Univ Maryland, Dept Atmospher & Ocean Sci, College Pk, MD 20742 USA |
推荐引用方式 GB/T 7714 | Li, Huiqi,Cui, Xiaopeng,Zhang, Da-Lin. A statistical analysis of hourly heavy rainfall events over the Beijing metropolitan region during the warm seasons of 2007-2014[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2017,37(11). |
APA | Li, Huiqi,Cui, Xiaopeng,&Zhang, Da-Lin.(2017).A statistical analysis of hourly heavy rainfall events over the Beijing metropolitan region during the warm seasons of 2007-2014.INTERNATIONAL JOURNAL OF CLIMATOLOGY,37(11). |
MLA | Li, Huiqi,et al."A statistical analysis of hourly heavy rainfall events over the Beijing metropolitan region during the warm seasons of 2007-2014".INTERNATIONAL JOURNAL OF CLIMATOLOGY 37.11(2017). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论