Numerical simulation of the critical scale of oasis maintenance and development in the arid regions of Northwest China
文献类型：期刊论文
| 作者 | Gao, YH; Chen, YC; Lu, SH |
| 刊名 | ADVANCES IN ATMOSPHERIC SCIENCES
 |
| 出版日期 | 2004 |
| 卷号 | 21期号:1页码:113-124 |
| 关键词 | MM5 oasis desert/Gobi critical scale local thermal circulation |
| ISSN号 | 0256-1530 |
| 通讯作者 | Gao, YH(gaoyh@ns.lzb.ac.cn) |
| 英文摘要 | Oasis is a special geographic landscape among the vast desert/Gobi in Northwest China (NWC). The surface sensitive heat flux and latent heat flux at Zhangye Oasis during 1 to 11 August 1991 are simulated using the NCAR nonhydrostatic mesoscale model MM5 Version 3. The horizontal grid resolution is set as 1 km. By comparing the simulation results with HEIFE observations, it is proved that the model can be used to simulate the surface energy and water mass exchange of and and semiarid regions in NWC. Based on the above results, the influence of different oasis scales on the local atmospheric field near the ground surface, and the critical scale of oasis maintenance, in NWC are studied dynamically. The following conclusion is obtained: the local thermal circulation between the oasis and the desert/Gobi is formed in the oasis downstream if the oasis scale is larger than 4 km. This local thermal circulation between the oasis and the desert adjacent to the oasis helps to conserve water vapor over the oasis. At the same time, it transfers the abundant water vapor from the oasis into the desert/Gobi near to the oasis to supply relatively plentiful water vapor for desert crops to grow on the fringe of the oasis. So, it is advantageous for oasis extension. However, if the scale of the oasis is smaller than 4 km, it is not easy for the local thermal circulation between the oasis and the desert/Gobi to take shape. This study provides a new standpoint for oasis maintenance and development. |
| 收录类别 | SCI |
| WOS关键词 | SOIL HYDROLOGY ; PARAMETERIZATION ; SENSITIVITY ; EVAPORATION ; MODEL |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| WOS类目 | Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000188438400012 |
| 出版者 | SCIENCE CHINA PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2556953 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Gao, YH |
| 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 | Gao, YH,Chen, YC,Lu, SH. Numerical simulation of the critical scale of oasis maintenance and development in the arid regions of Northwest China[J]. ADVANCES IN ATMOSPHERIC SCIENCES,2004,21(1):113-124. |
| APA | Gao, YH,Chen, YC,&Lu, SH.(2004).Numerical simulation of the critical scale of oasis maintenance and development in the arid regions of Northwest China.ADVANCES IN ATMOSPHERIC SCIENCES,21(1),113-124. |
| MLA | Gao, YH,et al."Numerical simulation of the critical scale of oasis maintenance and development in the arid regions of Northwest China".ADVANCES IN ATMOSPHERIC SCIENCES 21.1(2004):113-124. |
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来源：寒区旱区环境与工程研究所
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