A numerical modeling study on desert oasis self-supporting mechanisms
文献类型：期刊论文
| 作者 | Chu, PC; Lu, SH; Chen, YC |
| 刊名 | JOURNAL OF HYDROLOGY
 |
| 出版日期 | 2005-10-10 |
| 卷号 | 312期号:1-4页码:256-276 |
| 关键词 | oasis self-supporting mechanism oasis breeze circulation atmospheric static stability wet-cold island lift index |
| ISSN号 | 0022-1694 |
| DOI | 10.1016/j.jhydrol.2005.02.043 |
| 通讯作者 | Chu, PC(pcchu@nps.edu) |
| 英文摘要 | Oasis self-supporting mechanisms due to oasis breeze circulation (OBC) are proposed and simulated numerically in this study using a coupled mesoscale and land-surface model. Excessive evaporation from the oasis makes the oasis surface colder than the surrounding desert surface. The sensible heat-flux gradient from oasis to surrounding desert drives the OBC with downdraft over the oasis and updraft over the desert. The horizontal length-scale of the OBC is around four times as large as the oasis scale. This secondary circulation creates two mechanisms to reduce heat and moisture exchange between the oasis and the surrounding desert: (1) the updraft over the desert reduces low-level hot, dry air flowing from the desert into the oasis; and (2) the downdraft increases the atmospheric static stability that reduces the oasis evaporation. Reduction of the oasis scale weakens the oasis self-supporting mechanisms through the decrease of the OBC associated with the increase of the oasis surface evaporation and decrease of the atmospheric stability over the oasis. (c) 2005 Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | SURFACE ; CHINA ; HEAT ; PREDICTION ; WEATHER ; BUDGET ; BASIN |
| WOS研究方向 | Engineering ; Geology ; Water Resources |
| WOS类目 | Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000232672500017 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2557901 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Chu, PC |
| 作者单位 | 1.USN, Postgrad Sch, Dept Oceanog, Naval Ocean Atmospher Predict Lab, Monterey, CA 93943 USA 2.Chinese Acad Sci, Inst Cold & Arid Environm & Engn, Lanzhou, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chu, PC,Lu, SH,Chen, YC. A numerical modeling study on desert oasis self-supporting mechanisms[J]. JOURNAL OF HYDROLOGY,2005,312(1-4):256-276. |
| APA | Chu, PC,Lu, SH,&Chen, YC.(2005).A numerical modeling study on desert oasis self-supporting mechanisms.JOURNAL OF HYDROLOGY,312(1-4),256-276. |
| MLA | Chu, PC,et al."A numerical modeling study on desert oasis self-supporting mechanisms".JOURNAL OF HYDROLOGY 312.1-4(2005):256-276. |
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来源：寒区旱区环境与工程研究所
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