| OBSERVING RESULTS OF THE ATMOSPHERIC MIXED LAYER IN BEIJING AREA AND THE EVALUATION OF THEORETICAL MODELS |
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| 作者姓名： | Zhang Aichen Sun Chengguo Tian Yi |
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| 作者单位： | Department of Geophysics Peking University，Beijing，Department of Geophysics，Peking University，Beijing，Division of Atmosphere，National Environmental Bureau，Beijing |
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| 摘 要： | In the present study the data of wind and temperature profiles and sensible heat flux observed in Beijing inJuly and December of 1986,together with the results of water tank experiments for comparison,are used to testthe prediction models of the atmospheric mixed layer with zero order and first order assumption,respectively.The results show that the entrainment rates in summer and winter used in the zero order model are 0.15 and0.10,respectively,while its value in the first order model ranges between 0.15 and 0.19 with a lower rateat the initial stage of mixed layer development.Emphasis in the study is also placed on the relationship between the entrainmert rate and the developmentof the mixed layer.
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| 收稿时间： | 1991/3/29 0:00:00 |
OBSERVING RESULTS OF THE ATMOSPHERIC MIXED LAYER IN BEIJING AREA AND THE EVALUATION OF THEORETICAL MODELS |
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| Zhang Aichen,Sun Chengguo,Tian Yi.OBSERVING RESULTS OF THE ATMOSPHERIC MIXED LAYER IN BEIJING AREA AND THE EVALUATION OF THEORETICAL MODELS[J].Acta Meteorologica Sinica,1991,5(5):541-550. |
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| Authors: | Zhang Aichen Sun Chengguo and Tian Yi |
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| Institution: | Zhang Aichen Sun Chengguo Department of Geophysics,Peking University,Beijing and Tian Yi Division of Atmosphere,National Environmental Bureau,Beijing |
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| Abstract: | In the present study the data of wind and temperature profiles and sensible heat flux observed in Beijing in July and December of 1986,together with the results of water tank experiments for comparison,are used to test the prediction models of the atmospheric mixed layer with zero order and first order assumption,respectively. The results show that the entrainment rates in summer and winter used in the zero order model are 0.15 and 0.10,respectively,while its value in the first order model ranges between 0.15 and 0.19 with a lower rate at the initial stage of mixed layer development. Emphasis in the study is also placed on the relationship between the entrainmert rate and the development of the mixed layer. |
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| Keywords: | atmospheric boundary layer mixed layer entrainment rate mixed layer prediction model |
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