| 夏季金塔绿洲及邻近沙漠地面风场、气温和湿度场特性的对比分析 |
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| 引用本文： | 胡泽勇,吕世华,高洪春,周秀云.夏季金塔绿洲及邻近沙漠地面风场、气温和湿度场特性的对比分析[J].高原气象,2005,24(4):522-526. |
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| 作者姓名： | 胡泽勇 吕世华 高洪春 周秀云 |
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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： | 国家自然科学基金重点项目（40233035）：中国科学院方向性创新项目（KZCX3-SW-329）共同资助 |
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| 摘 要： | 利用2004年7～8月金塔“绿洲系统能量与水分循环过程观测与数值研究”观测试验期间的资料，对比分析了金塔绿洲及邻近沙漠地面风场和空气温湿特性的水平差异。结果表明：绿洲及邻近沙漠的温湿和风速差异明显，绿洲内部冷湿风弱，而外部干热风稍大；绿洲内的温湿场为非对称结构，冷湿中心偏离绿洲的几何中心，在绿洲东部，当地盛行风向的上风方位置上；而风速场结构对称，弱风中心与绿洲的几何中心一致；在不同的风向时空气比湿有较大的差异，存在明显的来自东北方沙漠戈壁的干平流和来自西南方水库及绿洲的湿平流。
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| 关 键 词： | 绿洲 沙漠 风场结构 温湿特性 |
| 文章编号： | 1000-0534（2005）04-0522-05 |
| 收稿时间： | 2005-03-07 |
| 修稿时间： | 2005-03-07 |
Comparative Analyses on Ground Wind Field and Air Temperature-Humidity Characteristics Inside and Outside Jinta Oasis |
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| HU Ze-yong,U Shi-hua,GAO Hong-chun,ZHOU Xiu-yun.Comparative Analyses on Ground Wind Field and Air Temperature-Humidity Characteristics Inside and Outside Jinta Oasis[J].Plateau Meteorology,2005,24(4):522-526. |
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| Authors: | HU Ze-yong U Shi-hua GAO Hong-chun ZHOU Xiu-yun |
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| Abstract: | The ground wind field and air temperature-humidity characteristics in Jinta Oasis were analyzedby using the observational data derived from the Jinta Oasis Experiment (JTOEX) which was implementedfrom June to August of 2004 in Jinta County. The results show that the ground air temperature, specific humidityand wind speed are different obviously inside and outside the Oasis. The airis the cold, wet and quiet wind insidethe Oasis, but the hot, dryand a little larger wind outside the Oasis. The air temperature and humidity field in the Oasis is an asymmetrical structure. The cold and wet centre is a little bit far east from the geometric centre of Oasis. But theKG*2wind speedfieldis a symmetrical structure contrastively. The weak wind centre keeps the same as geometry centre of the Oasis.The air specific humidity is different under the different wind directions.The geographic location of Oasis and wet or dry advection from environmentmay causeit. |
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| Keywords: | Oasis Desert Wind structure Air temperatureand humidity characteristics |
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