| 城市近地层湍流特征分析 |
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| 引用本文： | 邹钧,孙鉴泞,刘罡.城市近地层湍流特征分析[J].气象科学,2011,31(4):525-533. |
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| 作者姓名： | 邹钧 孙鉴泞 刘罡 |
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| 作者单位： | 1. 南京大学大气科学学院,南京,210093
2. 南京大学大气科学学院,南京210093;南京大学气候与全球变化研究院,南京210093 |
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| 基金项目： | 国家重点基础研究发展计划(973计划)资助项目(2010CB428501). |
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| 摘 要： | 利用中国科学院大气物理研究所在北京的325 m铁塔观测资料,本文分析了47、140和280 m三个高度的湍流统计特征.结果表明,城市近地层的湍流速度方差和湍流温度方差都较好地满足局地相似关系,140 m和280 m的湍流特征非常接近,而47 m的湍流特征与之相比表现出明显的差异,说明由于城市冠层动力和热力非均匀性的影响...
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| 关 键 词： | 湍流特征 城市冠层 粗糙子层 惯性子层 局地相似 |
| 收稿时间： | 2011/5/24 0:00:00 |
Turbulence characteristics in the urban surface layer |
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| ZOU Jun,SUN Jianning and LIU Gang.Turbulence characteristics in the urban surface layer[J].Scientia Meteorologica Sinica,2011,31(4):525-533. |
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| Authors: | ZOU Jun SUN Jianning and LIU Gang |
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| Institution: | ZOU Jun1 SUN Jianning1,2 LIU Gang1(1 School of Atmospheric Sciences,Nanjing University,Nanjing 210093,China,2 Institute for Climate and Global Change Research,China) |
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| Abstract: | Observational data from Beijing 325 m meteorological tower are used to investigate the turbulence characteristics in the urban surface layer.The turbulent variances at three levels of 47 m,140 m and 280 m heights are analyzed in the frame of the local similarity theory.The results show that the variances of wind velocity and temperature can be quite well described by the local similarity theory.However,the comparison shows that the turbulence characteristics at 140 m and 280 m heights are close to each othe... |
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| Keywords: | Turbulence characteristics Urban Canopy Roughness sublayer Inertial sublayer Local similarity theory |
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