Influence of topography and large-scale forcing on the occurrence of katabatic flow jumps in Antarctica: Idealized simulations
文献类型：期刊论文
| 作者 | Yu, Ye; Cai, Xiaoming; Qie, Xiushu |
| 刊名 | ADVANCES IN ATMOSPHERIC SCIENCES
 |
| 出版日期 | 2007-09-01 |
| 卷号 | 24期号:5页码:819-832 |
| 关键词 | Antarctic katabatic jump numerical simulation RAMS |
| ISSN号 | 0256-1530 |
| DOI | 10.1007/s00376-007-0819-x |
| 通讯作者 | Yu, Ye(yy@1zb.ac.cn) |
| 英文摘要 | The Regional Atmospheric Modeling System (RAMS), which is a non-hydrostatic numerical model, has been used to investigate the impact of terrain shape and large-scale forcing on the Antarctic surface-wind regime, focusing on their roles in establishing favorable flow conditions for the formation of katabatic flow jumps. A series of quasi-21) numerical simulations were conducted over idealized slopes representing the slopes of Antarctica during austral winter conditions. Results indicate that the steepness and variations of the underlying slope play a role in the evolution of near-surface flows and thus the formation of katabatic flow jumps. However, large-scale forcing has a more noticeable effect on the occurrence of this small-scale phenomenon by establishing essential upstream and downstream flow conditions, including the upstream supercritical flow, the less stably stratified or unstable layer above the cold katabatic layer, as well as the cold-air pool located near the foot of the slope through an interaction with the underlying topography. Thus, the areas with steep and abrupt change in slopes, e.g. near the coastal areas of the eastern Antarctic, are preferred locations for the occurrence of katabatic flow jumps, especially under supporting synoptic conditions. |
| 收录类别 | SCI |
| WOS关键词 | TERRA-NOVA BAY ; WIND REGIME ; ADELIE LAND ; NUMERICAL SIMULATIONS ; SURFACE WINDS ; COATS LAND ; ICE SHELF ; DYNAMICS ; ATMOSPHERE ; CONTINENT |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| WOS类目 | Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000249569100007 |
| 出版者 | SCIENCE CHINA PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2555961 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Yu, Ye |
| 作者单位 | 1.Univ Birmingham, Sch Geog Earth & Environm Sci, Birmingham B15 2TT, W Midlands, England 2.Chinese Acad Sci, Dept Plateau Atmospher Phys, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China 3.Chinese Acad Sci, Inst Atmospher Phys, Lab Middle Atmosphere & Global Environm Observ, LAGEO, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yu, Ye,Cai, Xiaoming,Qie, Xiushu. Influence of topography and large-scale forcing on the occurrence of katabatic flow jumps in Antarctica: Idealized simulations[J]. ADVANCES IN ATMOSPHERIC SCIENCES,2007,24(5):819-832. |
| APA | Yu, Ye,Cai, Xiaoming,&Qie, Xiushu.(2007).Influence of topography and large-scale forcing on the occurrence of katabatic flow jumps in Antarctica: Idealized simulations.ADVANCES IN ATMOSPHERIC SCIENCES,24(5),819-832. |
| MLA | Yu, Ye,et al."Influence of topography and large-scale forcing on the occurrence of katabatic flow jumps in Antarctica: Idealized simulations".ADVANCES IN ATMOSPHERIC SCIENCES 24.5(2007):819-832. |
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来源：寒区旱区环境与工程研究所
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