| 金塔绿洲风场与温湿场特征的数值模拟 |
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| 引用本文： | 吕世华,尚伦宇.金塔绿洲风场与温湿场特征的数值模拟[J].中国沙漠,2005,25(5):623-628. |
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| 作者姓名： | 吕世华 尚伦宇 |
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| 作者单位： | 中国科学院,寒区旱区环境与工程研究所,甘肃,兰州,730000 |
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| 基金项目： | 国家重点基金项目(40233035)，中国科学院方向性创新项目(KZCX3-SW-329)，中国科学院寒区旱区环境与工程研究所创新项目(CX210036)共同资助 |
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| 摘 要： | 使用美国NCAR新版MM5V3.6非静力平衡模式,采用三重嵌套的降尺度方法,模拟研究了甘肃河西走廊金塔绿洲风场与温湿场特征。结果表明:由于绿洲的存在,绿洲沙漠系统产生的次级环流对局地环流有一定影响;平流作用将沙漠中的干热空气送向绿洲,绿洲近地层会出现逆温,感热向地表输送;沙漠上由于临近绿洲的水汽平流作用,上层大气湿度比低层更大,这就是逆湿现象。
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| 关 键 词： | 绿洲沙漠环流 绿洲效应 逆湿现象 数值模拟 |
| 文章编号： | 1000-694X（2005）05-0623-06 |
| 收稿时间： | 2005-01-17 |
| 修稿时间： | 2005-03-20 |
Numerical Simulation of Characteristics of Wind Field, Air Temperature and Humidity in Jinta Oasis, Hexi Corridor |
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| Lǔ Shi-hua,SHANG Lun-yu.Numerical Simulation of Characteristics of Wind Field, Air Temperature and Humidity in Jinta Oasis, Hexi Corridor[J].Journal of Desert Research,2005,25(5):623-628. |
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| Authors: | Lǔ Shi-hua SHANG Lun-yu |
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| Abstract: | Using the NCAR nonhydrostatic mesoscale model MM5V3.6 and through triple nested technique, we simulated the characteristics of wind field, air temperature and humidity field in Jinta Oasis, middle reaches of Heihe river basin in Hexo Corridor. The main results show that oasis-desert circulation has influence to the local circulation. When dry and hot air in desert is advected to oasis, the inverse temperature phenomenon appears in oasis and sensitive heat flux transports inversely. Because of the vapor advection near oasis, the atmospheric specific humidity in desert is higher and higher from the bottom up. That is the inverse humidity phenomenon. |
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| Keywords: | oasis-desert circulation oasis effect inverse humidity phenomenon numerical simulation |
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