Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2016JD025914 |
The characteristics of weakly forced mountain-to-plain precipitation systems based on radar observations and high-resolution reanalysis | |
Xiao, Xian1,2,3; Sun, Juanzhen4; Chen, Mingxuan2; Qie, Xiushu1,3; Wang, Yingchun5; Ying, Zhuming4 | |
2017-03-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2017 |
卷号 | 122期号:6 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | The metropolis of Beijing in China is located on a plain adjacent to high mountains to its northwest and the gulf of the Bohai Sea to its southeast. One of the most challenging forecast problems for Beijing is to predict whether thunderstorms initiating over the mountains will propagate to the adjacent plains and intensify. In this study, 18 warm season convective cases between 2008 and 2013 initiating on the mountains and intensifying on the plains under weak synoptic forcing were analyzed to gain an understanding of their characteristics. The statistical analysis was based on mosaic reflectivity data from six operational Doppler radars and reanalysis data produced by the Four-Dimensional Variational Doppler Radar Analysis System (VDRAS). The analysis of the radar reflectivity data shows that convective precipitation strengthened on the plains at certain preferred locations. To investigate the environmental conditions favoring the strengthening of the mountain-to-plain convective systems, statistical diagnoses of the rapid-update (12min) 3km reanalyses from VDRAS for the 18 cases were performed by computing the horizontal and temporal means of convective available potential energy, convective inhibition, vertical wind shear, and low-level wind for the plain and mountain regions separately. The results were compared with those from a baseline representing the warm season average and from a set of null cases and found considerable differences in these fields between the three data sets. The mean distributions of VDRAS reanalysis fields were also examined. The results suggest that the convergence between the low-level outflows associated with cold pools and the south-southeasterly environmental flows corresponds well with the preferred locations of convective intensification on the plains. |
英文关键词 | mountain-to-plain precipitation systems convection radar observations cold pool high-resolution reanalysis statistical characteristics |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000399655200002 |
WOS关键词 | FORECAST DEMONSTRATION PROJECT ; WARM-SEASON PRECIPITATION ; SQUALL LINE ; CLOUD MODEL ; MICROPHYSICAL RETRIEVAL ; LIGHTNING ACTIVITY ; CELL REGENERATION ; DIURNAL CYCLE ; NORTH CHINA ; PART II |
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/32364 |
专题 | 气候变化 |
作者单位 | 1.Chinese Acad Sci, Inst Atmospher Phys, Key Lab Middle Atmosphere & Global Environm Obser, Beijing, Peoples R China; 2.China Meteorol Adm, Inst Urban Meteorol, Beijing, Peoples R China; 3.Univ Chinese Acad Sci, Beijing, Peoples R China; 4.Natl Ctr Atmospher Res, POB 3000, Boulder, CO 80307 USA; 5.China Meteorol Adm, Beijing Meteorol Serv, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | Xiao, Xian,Sun, Juanzhen,Chen, Mingxuan,et al. The characteristics of weakly forced mountain-to-plain precipitation systems based on radar observations and high-resolution reanalysis[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2017,122(6). |
APA | Xiao, Xian,Sun, Juanzhen,Chen, Mingxuan,Qie, Xiushu,Wang, Yingchun,&Ying, Zhuming.(2017).The characteristics of weakly forced mountain-to-plain precipitation systems based on radar observations and high-resolution reanalysis.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,122(6). |
MLA | Xiao, Xian,et al."The characteristics of weakly forced mountain-to-plain precipitation systems based on radar observations and high-resolution reanalysis".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 122.6(2017). |
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