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DOI | 10.1002/2016JD026247 |
Interaction between turbulent flow and sea breeze front over urban-like coast in large-eddy simulation | |
Jiang, Ping1,2; Wen, Zhiping1,2,3,4; Sha, Weiming5; Chen, Guixing1,2,3,4 | |
2017-05-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2017 |
卷号 | 122期号:10 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; Japan |
英文摘要 | Turbulent flow and its interaction with a sea breeze front (SBF) over an urban-like coast with a regular block array were investigated using a building-resolving computational fluid dynamics model. It was found that during daytime with an offshore ambient flow, streaky turbulent structures tended to grow within the convective boundary layer (CBL) over a warm urban surface ahead of the SBF. The structures were organized as streamwise streaks at an interval of a few hundred meters, which initiated at the rooftop level with strong wind shear and strengthens in the CBL with moderate buoyancy. The streaks then interacted with the onshore-propagating SBF as it made landfall. The SBF, which was initially characterized as a shallow and quasi-linear feature over the sea, developed three-dimensional structures with intensified updrafts at an elevated frontal head after landfall. Frontal updrafts were locally enhanced at intersections where the streaks merged with the SBF, which greatly increased turbulent fluxes at the front. The frontal line was irregular because of merging, tilting, and transformation effects of vorticity associated with streaky structures. Inland penetration of the SBF was slowed by the frictional effect of urban-like surfaces and turbulent flow on land. The overall SBF intensity weakened after the interaction with turbulent flow. These findings aid understanding of local weather over coastal cities during typical sea breeze conditions. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000404131500016 |
WOS关键词 | HORIZONTAL CONVECTIVE ROLLS ; ATMOSPHERIC DENSITY CURRENTS ; PLANETARY BOUNDARY-LAYER ; GRAVITY-CURRENT ; INLAND PENETRATION ; NUMERICAL-SIMULATION ; ORGANIZED STRUCTURES ; IMPROVED FORECASTS ; WRF MODEL ; PART I |
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/33842 |
专题 | 气候变化 |
作者单位 | 1.Sun Yat Sen Univ, Sch Atmospher Sci, Ctr Monsoon & Environm Res, Guangzhou, Guangdong, Peoples R China; 2.Sun Yat Sen Univ, Guangdong Prov Key Lab Climate Change & Nat Disas, Guangzhou, Guangdong, Peoples R China; 3.Beijing Normal Univ, Zhuhai Joint Innovat Ctr Climate Environm Ecosyst, Zhuhai, Peoples R China; 4.Beijing Normal Univ, Key Lab Urban Climate & Ecodynam, Zhuhai, Peoples R China; 5.Tohoku Univ, Dept Geophys, Sendai, Miyagi, Japan |
推荐引用方式 GB/T 7714 | Jiang, Ping,Wen, Zhiping,Sha, Weiming,et al. Interaction between turbulent flow and sea breeze front over urban-like coast in large-eddy simulation[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2017,122(10). |
APA | Jiang, Ping,Wen, Zhiping,Sha, Weiming,&Chen, Guixing.(2017).Interaction between turbulent flow and sea breeze front over urban-like coast in large-eddy simulation.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,122(10). |
MLA | Jiang, Ping,et al."Interaction between turbulent flow and sea breeze front over urban-like coast in large-eddy simulation".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 122.10(2017). |
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