| 高云和气溶胶辐射效应对边界层的影响 |
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| 引用本文： | 邓涛,张镭,陈敏,等.高云和气溶胶辐射效应对边界层的影响[J].大气科学,2010,34(5):979-987. |
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| 作者姓名： | 邓涛 张镭 陈敏 等 |
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| 作者单位： | 1.半干旱气候变化教育部重点实验室, 兰州大学大气科学学院, 兰州, 730000;中国气象局广州热带海洋气象研究所, 广州,510080 |
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| 基金项目： | 国家重点基础研究发展规划项目2006CB400501, 国家自然科学基金资助项目40675078, 2007公益性科研院所基本科研业务费专项资金, 广东省气象局气象科技项目2008B07 |
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| 摘 要： | 通过WRF(Weather Research and Forecasting) 模式嵌套包含了高云和气溶胶辐射效应的大气边界层模式, 结合激光雷达资料, 进行数值模拟, 定量分析高云和气溶胶辐射效应对城市边界层的影响。模式能很好地模拟出在高云和气溶胶辐射效应下城市边界层的特征。夜间, 气溶胶在低层起到保温作用, 高云使得保温作用得到加强, 地表增温达1.5 K。中高层, 气溶胶降低所在气层温度, 高云使得降温幅度减少, 降温达0.2～0.7 K。白天, 高云和气溶胶减少到达地面的太阳短波辐射, 导致低层温度降低, 地表降温达1.3 K。中高层, 气溶胶加热所在的气层, 高云使得这一增温幅度减少, 在500 m处增温最大, 达0.85 K。无论白天还是夜间, 气溶胶的辐射效应都会抵消一部分形成山谷风的热力条件, 使得中低层的风速减少, 这种影响在白天显得尤为明显。高云的存在使得这种抵消得到少量的补偿。
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| 关 键 词： | 高云 气溶胶 大气边界层 数值模拟 |
The Influence of High Cloud and Aerosol Radiative Effect on Boundary Layer |
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| DENG Tao,ZHANG Lei,CHEN Min,WU Dui,DENG Xuejiao,TAN Haobo.The Influence of High Cloud and Aerosol Radiative Effect on Boundary Layer[J].Chinese Journal of Atmospheric Sciences,2010,34(5):979-987. |
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| Authors: | DENG Tao ZHANG Lei CHEN Min WU Dui DENG Xuejiao TAN Haobo |
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| Affiliation: | 1.Key Laboratory for Semi-Arid Climate Change of the Ministry of Education, College of Atmospheric Sciences, Lanzhou University, Lanzhou,730000;Guangzhou Institute of Tropical and Marine Meteorology, China Meteorological Administration, Guangzhou,5100802.Key Laboratory for Semi-Arid Climate Change of the Ministry of Education, College of Atmospheric Sciences, Lanzhou University, Lanzhou,730000 |
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| Abstract: | In order to indicate the influence of high cloud and the radiative effect of aerosol on the urban boundary layer,numerical simulation and lidar data are implemented by coupling the WRF (Weather Research and Forecasting) model and the ABL (Atmospheric Boundary Layer) model in which the influence of high cloud and aerosol radiative effect are considered.The model can present the character of urban boundary layer under the influence of high cloud and aerosol radiative effect.At night,aerosol keep warming at lo... |
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| Keywords: | high cloud aerosol atmospheric boundary layer numerical simulation |
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