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《Chinese Journal of Atmospheric Sciences》 2004-01
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Application of the Optimization Arithmetic to Ascertain the Entrainment Velocity in the Top of the Well-Mixed Layer

Lu Ping, Zheng Qin, Yu Rucong, and Mu Mu(State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029)  
A simple zero-order flat model is usually used to characterize the well-mixed convective boundary layer under clear sky. In this model, we often hypothesize the closed-condition as the entrainment flux in the top of the atmosphere boundary layer has the fixed linear relationship to the surface heat flux, that is( (wθ) h=-A (wθ) s). Due to the limited observation data, the parameter A is always obtained from the large eddy simulation, then the limited observation data is utilized to confirm it again. In this study, based on the ARM data the optimization arithmetic is used to ascertain the closed-parameter, so that the convective mixed layer model can reappear the actual boundary layer’s developing process. This study tries to apply the optimization arithmetic to ascertain the factual physical process parameter. The results suggest that, if the data is enough, the optimization arithmetic should be an effective approach to ascertain the closed-parameter.
【Fund】: 中国科学院创新项目KZCX2 2 0 8;; “十五”攻关项目 2 0 0 1BA60 7B;; 国家自然科学基金资助项目 40 2 3 3 0 3 1资助
【CateGory Index】: P421.31
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【Co-references】
Chinese Journal Full-text Database 10 Hits
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【Secondary References】
Chinese Journal Full-text Database 1 Hits
1 LU Ping1,2 YU Rucong3 ZHOU Tianjun11.LASG,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029,China 2.Graduate School of Chinese Academy of Sciences,Beijing 100049,China 3.LaSW,Chinese Academy of Meteorological Sciences,China Meteorology Administration,Beijing 100081,China;Numerical simulation of the mid-night rainfall over Sichuan basin during August 2003[J];Acta Meteorologica Sinica;2008-03
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