| 山地复杂下垫面湍流特征观测分析 |
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| 引用本文： | 杨胜朋,吕世华,陈玉春,奥银焕,蒋熹.山地复杂下垫面湍流特征观测分析[J].高原气象,2008,27(2):272-278. |
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| 作者姓名： | 杨胜朋 吕世华 陈玉春 奥银焕 蒋熹 |
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| 作者单位： | 1. 中国科学院,寒区旱区环境与工程研究所西部气候环境与灾害实验室,甘肃,兰州,730000;中国科学院研究生院,北京,100049
2. 中国科学院,寒区旱区环境与工程研究所西部气候环境与灾害实验室,甘肃,兰州,730000 |
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| 基金项目： | 中国科学院"西部之光"人才培养计划
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中国科学院寒区旱区环境与工程研究所引进人才基金 |
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| 摘 要： | 利用谱方法和能量闭合度分析等方法,对兰州市皋兰山2006年夏季和2005年冬季涡度相关系统测定的湍流数据质量进行了分析,结果表明:4个观测点测定的三维风速、空气温度的功率谱在惯性副区都符合"-2/3"定律,垂直风速和温度的协谱在惯性副区也基本符合"-4/3"定律.4个观测点都存在能量平衡不闭合现象,夏季观测点绿化地和裸地能量平衡比率(EBR)分别为66%和94%,冬季绿化地和裸地的EBR分别为62%和84%;裸地观测点的闭合程度明显好于绿化地.本文还讨论了能量闭合度的日变化特征及各个观测点的地表能量收支状况.
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| 关 键 词： | 皋兰山 涡度相关 谱分析 能量平衡闭合 |
| 文章编号： | 1000-0534(2008)02-0272-07 |
| 修稿时间： | 2007年6月18日 |
Analysis on Turbulent Flux in Complex Underlying Surface Conditions |
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| YANG Sheng-peng,L Shi-hua,CHEN Yu-chun,AO Yin-huan,JIANG Xi.Analysis on Turbulent Flux in Complex Underlying Surface Conditions[J].Plateau Meteorology,2008,27(2):272-278. |
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| Authors: | YANG Sheng-peng L Shi-hua CHEN Yu-chun AO Yin-huan JIANG Xi |
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| Institution: | YANG Sheng-peng,L(U) Shi-hua,CHEN Yu-chun,AO Yin-huan,JIANG Xi |
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| Abstract: | Using the methods of spectral analysis and energy balance closure the quality of turbulent data collected from the filed experiment conducted in the Gaolan Mountain in summer of 2006 and in winter of 2005 was analyzed.The results show that the energy spectra and cospectra were in agreement with the \!-2/3\" and \!-4/3\" scaling law corresponding in inertial sub-range.The energy imbalance was found in all observational sites.The energy balance ratio(EBR) was 66% and 94% in the afforestation soil and in the bare soil in the summer sites,and the corresponding value was 62% and 84% in the winter sites,which showed that the EBR in bare soil was better than that in afforestation soil.The diurnal variation of energy balance closure and surface energy budget were also discussed. |
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| Keywords: | Gaolan Mountain Eddy Covariance Spectral analysis Energy balance closure |
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