Analysis on the Interaction between Turbulence and Secondary Circulation of the Surface Layer at Jinta Oasis in Summer
文献类型：期刊论文
| 作者 | Han Bo; Lue Shihua; Ao Yinhuan |
| 刊名 | ADVANCES IN ATMOSPHERIC SCIENCES
 |
| 出版日期 | 2010-05-01 |
| 卷号 | 27期号:3页码:605-620 |
| 关键词 | heterogeneous atmospheric boundary layer turbulent kinetic energy equations energy conversion secondary circulation oasis effect |
| ISSN号 | 0256-1530 |
| DOI | 10.1007/s00376-009-9015-5 |
| 通讯作者 | Han Bo(hanbo_nju@163.com) |
| 英文摘要 | The kinetic energy variations of mean flow and turbulence at three levels in the surface layer were calculated by using eddy covariance data from observations at Jinta oasis in 2005 summer. It is found that when the mean horizontal flow was stronger, the turbulent kinetic energy was increased at all levels, as well as the downward mean wind at the middle level. Since the mean vertical flow on the top and bottom were both negligible at that time, there was a secondary circulation with convergence in the upper half and divergence in the lower half of the column. After consideration of energy conversion, it was found that the interaction between turbulence and the secondary circulation caused the intensification of each other. The interaction reflected positive feedback between turbulence and the vertical shear of the mean flow. Turbulent sensible and latent heat flux anomaly were also analyzed. The results show that in both daytime and at night, when the surface layer turbulence was intensified as a result of strengthened mean flow, the sensible heat flux was decreased while the latent heat flux was increased. Both anomalous fluxes contributed to the cold island effect and the moisture island effect of the oasis. |
| 收录类别 | SCI |
| WOS关键词 | ATMOSPHERIC BOUNDARY-LAYER ; MONIN-OBUKHOV SIMILARITY ; HEAT-FLUX ; 1976 ITCE ; BUDGETS ; DESERT ; SYSTEM ; ENERGY ; MODEL ; SCALE |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| WOS类目 | Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000276839600013 |
| 出版者 | SCIENCE CHINA PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2556291 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Han Bo |
| 作者单位 | Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Han Bo,Lue Shihua,Ao Yinhuan. Analysis on the Interaction between Turbulence and Secondary Circulation of the Surface Layer at Jinta Oasis in Summer[J]. ADVANCES IN ATMOSPHERIC SCIENCES,2010,27(3):605-620. |
| APA | Han Bo,Lue Shihua,&Ao Yinhuan.(2010).Analysis on the Interaction between Turbulence and Secondary Circulation of the Surface Layer at Jinta Oasis in Summer.ADVANCES IN ATMOSPHERIC SCIENCES,27(3),605-620. |
| MLA | Han Bo,et al."Analysis on the Interaction between Turbulence and Secondary Circulation of the Surface Layer at Jinta Oasis in Summer".ADVANCES IN ATMOSPHERIC SCIENCES 27.3(2010):605-620. |
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来源：寒区旱区环境与工程研究所
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