| Numerical Simulation of Wind and Temperature Fields over Beijing Area in Summer |
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| 作者姓名： | HU Xiaoming LIU Shuhu WANG Yingchun LI Ju |
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| 作者单位： | Group of Atmospheric Boundary Layer Physics and Environment，Laboratory of Severe Storm Research，Department of Atmospheric Sciences，School of Physics，Peking University，Beijing 100871，Group of Atmospheric Boundary Layer Physics and Environment，Laboratory of Severe Storm Research，Department of Atmospheric Sciences，School of Physics，Peking University，Beijing 100871，Institute of Urban Meteorological，China Meteorological Administration，Beijing 100089，Institute of Urban Meteorological，China Meteorological Administration，Beijing 100089 |
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| 基金项目： | Project supported by the National Natural Science Foundation of China and Hong Kong under Grant Nos. 40275004,4001161948. |
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| 摘 要： | 1. IntroductionThe basic role of urban-rural boundary layer re-search is to study all kinds of physical process changesin the atmosphere boundary layer over urban and itssurrounding areas. Urban heat island (UHI) is a well-known feature of urban-rural climate. Attempts toincrease the understanding of the causes of the UHIand other urban-rural boundary layer phenomena haveused observational, theoretical and modelling methodssince long before. Seaman (1989) used a hydrostaticmodel, with real …
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| 收稿时间： | 2003/11/30 0:00:00 |
| 修稿时间： | 2004/5/15 0:00:00 |
Numerical Simulation of Wind and Temperature Fields over Beijing Area in Summer |
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| HU Xiaoming,LIU Shuhu,WANG Yingchun,LI Ju.Numerical Simulation of Wind and Temperature Fields over Beijing Area in Summer[J].Acta Meteorologica Sinica,2005,19(1):120-127. |
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| Authors: | HU Xiaoming LIU Shuhua WANG Yingchun LI Ju |
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| Institution: | Group of Atmospheric Boundary Layer Physics and Environment, Laboratory of Severe Storm Research, Department of Atmospheric Sciences, School of Physics, Peking University, Beijing 100871 Group of Atmospheric Boundary Layer Physics and Environment, Laboratory of Severe Storm Research, Department of Atmospheric Sciences, School of Physics, Peking University, Beijing 100871 Institute of Urban Meteorological, China Meteorological Administration, Beijing 100089 Institute of Urban Meteorological, China Meteorological Administration, Beijing 100089 |
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| Abstract: | The non-hydrostatic mesoscale model MM5V3 is used to simulate the wind and temperature fields of the atmospheric boundary layer over Beijing area in summer with the mesh resolution of 1 km. The simulation results show that the numerical model can successfully simulate the urban heat island effect and the wind and temperature fields which are affected by the complicated topography and urban heat island. The results show that: (1) the west area (from Haidian to Fengtai Districts) is always the high temperature center of Beijing, where the surface temperature is about 6 K higher than the other suburbs; and (2) due to the unique topography the wind of Beijing area during the daytime is southern anabatic wind and at the night is northern katabatic wind. The results comparing well with the data from surface observation stations validate the accuracy of the simulation. |
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| Keywords: | mesoscale model MM5 numerical simulation urban heat island wind field temperature field climatic effect over Beijing area |
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