Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JAS-D-16-0276.1 |
Dynamics of Reversed Urban Breeze Circulation | |
Seo, Jaemyeong Mango1; Ganbat, Gantuya1,2; Baik, Jong-Jin1 | |
2017-04-01 | |
发表期刊 | JOURNAL OF THE ATMOSPHERIC SCIENCES |
ISSN | 0022-4928 |
EISSN | 1520-0469 |
出版年 | 2017 |
卷号 | 74期号:4 |
文章类型 | Article |
语种 | 英语 |
国家 | South Korea; Mongolia |
英文摘要 | The urban breeze circulation (UBC) is a thermally forced mesoscale circulation that is characterized by low-level inward flow toward the urban center, updrafts near the urban center, upper-level outward flows, and weak down-drafts outside the urban area. Previous numericalmodeling studies indicate that in the early morning the direction of the UBC can be reversed. Here, the dynamics of a reversed UBC is studied in the context of the response of the atmosphere to specified thermal forcing, which represents diurnally varying urban heating. For this, a linearized, twodimensional, hydrostatic, Boussinesq airflow system in a rotating frame with specified thermal forcing is solved using the Fourier transform method. The occurrence of a reversed UBC in the early morning is confirmed. The Coriolis parameter affects the strength and vertical structure of the UBC, whose role is similar to that of the coefficient of Rayleigh friction and Newtonian cooling. The occurrence condition, strength, and vertical structure of a reversed UBC are examined. The Coriolis force as well as urban heating alters the occurrence time of the reversed UBC. For a strongly viscous system, a reversed UBC occurs only in high latitudes with low occurrence possibility. A simple oscillation-type model for the horizontal velocity is constructed to get some dynamical insights into a reversed UBC. The analysis results also show that the Coriolis force alters the occurrence time of the reversed UBC. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000399333700019 |
WOS关键词 | HEAT-ISLAND ; LAND ; FLOW ; CITY |
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/29316 |
专题 | 地球科学 |
作者单位 | 1.Seoul Natl Univ, Sch Earth & Environm Sci, Seoul, South Korea; 2.Informat & Res Inst Meteorol Hydrol & Environm, Ulaanbaatar, Mongolia |
推荐引用方式 GB/T 7714 | Seo, Jaemyeong Mango,Ganbat, Gantuya,Baik, Jong-Jin. Dynamics of Reversed Urban Breeze Circulation[J]. JOURNAL OF THE ATMOSPHERIC SCIENCES,2017,74(4). |
APA | Seo, Jaemyeong Mango,Ganbat, Gantuya,&Baik, Jong-Jin.(2017).Dynamics of Reversed Urban Breeze Circulation.JOURNAL OF THE ATMOSPHERIC SCIENCES,74(4). |
MLA | Seo, Jaemyeong Mango,et al."Dynamics of Reversed Urban Breeze Circulation".JOURNAL OF THE ATMOSPHERIC SCIENCES 74.4(2017). |
条目包含的文件 | 条目无相关文件。 |
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