Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018GL081714 |
General Features of Radar-Observed Boundary Layer Convergence Lines and Their Associated Convection Over a Sharp Vegetation-Contrast Area | |
Huang, Yipeng1,2; Meng, Zhiyong2; Li, Wanbiao2; Bai, Lanqiang3,4; Meng, Xuefeng5 | |
2019-03-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
卷号 | 46期号:5页码:2865-2873 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | Boundary layer convergence lines (boundaries), an important trigger of convective storms, can be produced by land surface contrasts. This study explored a five-year summertime radar climatology of boundaries and their associated convection in response to vegetation contrast around the bend of the Yellow River in North China. A total of 323 boundaries were identified with 44% being convection-associated. The boundaries especially the convective boundaries were more frequent over the arid area than those over the vegetated area and tended to have an orientation parallel to the vegetation contrast line. The boundary activities collocated well with the diurnal variation in surface temperature difference across the vegetation contrast. Compared with the nonconvective boundaries, the convective boundaries formed earlier and moved faster into the inner arid area, obtained maximum length around midday, and then initiated convection. Vegetation contrast might also affect the high-frequency location and magnitude of boundary-associated convective precipitation. Plain Language Summary Boundary layer convergence lines (boundaries) have long been known as an important precursor for convective storms. This study performed a five-year summertime radar climatology of boundaries and their associated convection in response to vegetation contrast (especially irrigation-desert contrast) around the bend of the Yellow River in North China. The results showed that the vegetation contrast significantly impacted the boundary characteristics in terms of location, orientation, maximum length, motion, and diurnal cycle, and might potentially impact the high-frequency location and magnitude of the boundary-associated convective precipitation as well. Compared with the nonconvective boundaries, the convective boundaries showed higher occurrence frequency in arid area, more apparently orientated along the dominant vegetation contrast line, formed and obtained their maximum length earlier, and moved faster into the inner arid area. These features may aid forecasters in evaluating the potential of a boundary in triggering convection. |
英文关键词 | boundary vegetation contrast convection initiation Hetao Irrigation District diurnal variation convective precipitation |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000462612900059 |
WOS关键词 | THUNDERSTORM INITIATION ; STORM INITIATION |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/181649 |
专题 | 气候变化 |
作者单位 | 1.Xiamen Meteorol Bur, Lab Straits Meteorol, Xiamen, Peoples R China; 2.Peking Univ, Lab Climate & Ocean Atmosphere Studies, Dept Atmospher & Ocean Sci, Sch Phys, Beijing, Peoples R China; 3.Sun Yat Sen Univ, Ctr Monsoon & Environm Res, Sch Atmospher Sci, Guangzhou, Guangdong, Peoples R China; 4.Sun Yat Sen Univ, Guangdong Prov Key Lab Climate Change & Nat Disas, Guangzhou, Guangdong, Peoples R China; 5.Inner Mongolia Autonomous Reg Meteorol Observ, Hohhot, Peoples R China |
推荐引用方式 GB/T 7714 | Huang, Yipeng,Meng, Zhiyong,Li, Wanbiao,et al. General Features of Radar-Observed Boundary Layer Convergence Lines and Their Associated Convection Over a Sharp Vegetation-Contrast Area[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(5):2865-2873. |
APA | Huang, Yipeng,Meng, Zhiyong,Li, Wanbiao,Bai, Lanqiang,&Meng, Xuefeng.(2019).General Features of Radar-Observed Boundary Layer Convergence Lines and Their Associated Convection Over a Sharp Vegetation-Contrast Area.GEOPHYSICAL RESEARCH LETTERS,46(5),2865-2873. |
MLA | Huang, Yipeng,et al."General Features of Radar-Observed Boundary Layer Convergence Lines and Their Associated Convection Over a Sharp Vegetation-Contrast Area".GEOPHYSICAL RESEARCH LETTERS 46.5(2019):2865-2873. |
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