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| DOI | 10.1016/j.atmosenv.2020.117871 |
| Urban wind field analysis from the Jack Rabbit II Special Sonic Anemometer Study | |
| Pirhalla M.; Heist D.; Perry S.; Hanna S.; Mazzola T.; Arya S.P.; Aneja V. | |
| 发表日期 | 2020 |
| ISSN | 1352-2310 |
| 卷号 | 243 |
| 英文摘要 | The Jack Rabbit II Special Sonic Anemometer Study (JRII-S), a field project designed to examine the flow and turbulence within a systematically arranged mock-urban environment constructed from CONEX shipping containers, is described in detail. The study involved the deployment of 35 sonic anemometers at multiple heights and locations, including a 32 m tall, unobstructed tower located about 115 m outside the building array to document the approach wind flow characteristics. The purpose of this work was to describe the experimental design, analyze the sonic data, and report observed wind flow patterns within the urban canopy in comparison to the approaching boundary layer flow. We show that the flow within the building array follows a tendency towards one of three generalized flow regimes displaying channeling over a wide range of wind speeds, directions, and stabilities. Two or more sonic anemometers positioned only a few meters apart can have vastly different flow patterns that are dictated by the building structures. Within the building array, turbulence values represented by normalized vertical velocity variance (σw2) are at least two to three times greater than that in the approach flow. There is also little evidence that σw2 measured at various heights or locations within the JRII array is a strong function of stability type in contrast to the approach flow. The results reinforce how urban areas create complicated wind patterns, channeling effects, and localized turbulence that can impact the dispersion of an effluent release. These findings can be used to inform the development of improved wind flow algorithms to better characterize pollutant dispersion in fast-response models. © 2020 |
| 关键词 | Building wakesJack rabbit IIMicroscale meteorologySonic anemometryTurbulenceUrban dispersion |
| 语种 | 英语 |
| scopus关键词 | Anemometers; Atmospheric thermodynamics; Boundary layer flow; Boundary layers; Flow patterns; Turbulence; Building structure; Channeling effect; Pollutant dispersions; Shipping containers; Sonic anemometer; Urban environments; Vertical velocity; Wind-flow pattern; Structural design; algorithm; boundary layer; building; effluent; equipment; experimental design; project design; turbulence; urban area; wind velocity; anemometry; Article; atmospheric dispersion; boundary layer; building; canopy; field study; geometry; meteorology; priority journal; urban area; wind; wind speed; Lepus |
| 来源期刊 | ATMOSPHERIC ENVIRONMENT
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| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/248905 |
| 作者单位 | US EPA ORD/CESER/HSMMD/DCB, 109 T.W. Alexander Dr, MD E343-06, Research Triangle ParkNC, United States; US EPA ORD/CEMM/AESMD/ESAB, 109 T.W. Alexander Dr, MD 81, Research Triangle ParkNC, United States; Hanna Consultants, 7 Crescent Ave, KennebunkportME, United States; SAIC, 8211 Terminal Rd, Lorton, VA, United States; North Carolina State University (NCSU), Marine, Earth, and Atmospheric Sciences Department (MEAS), 2800 Faucette Drive, Jordan Hall, Raleigh, NC 1125, United States |
| 推荐引用方式 GB/T 7714 | Pirhalla M.,Heist D.,Perry S.,et al. Urban wind field analysis from the Jack Rabbit II Special Sonic Anemometer Study[J],2020,243. |
| APA | Pirhalla M..,Heist D..,Perry S..,Hanna S..,Mazzola T..,...&Aneja V..(2020).Urban wind field analysis from the Jack Rabbit II Special Sonic Anemometer Study.ATMOSPHERIC ENVIRONMENT,243. |
| MLA | Pirhalla M.,et al."Urban wind field analysis from the Jack Rabbit II Special Sonic Anemometer Study".ATMOSPHERIC ENVIRONMENT 243(2020). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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