| A SEARCH TECHNIQUE FOR CHOOSING OPTIMUM PARAMETERS IN NUMERICAL WEATHER PREDICTION |
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| 作者姓名： | Liu Jin Yan Hong |
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| 作者单位： | National Meteorological Center State Meteorological Administration，Beijing |
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| 摘 要： | The steepest descent(or ascent)search is employed for finding optimum diffusion coefficients in T42L9Gmodel,with a view to improving the model's computational stability or prediction accuracy.The method of thesteepest descent search is first described,in which the golden section search is chosen as the fundamental one-dimensional search used in the multi-dimentional steepest descent search,and then the optimization of the dif-fusion coefficients is described.
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| 收稿时间： | 1990/11/1 0:00:00 |
A SEARCH TECHNIQUE FOR CHOOSING OPTIMUM PARAMETERS IN NUMERICAL WEATHER PREDICTION |
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| Liu Jin,Yan Hong.A SEARCH TECHNIQUE FOR CHOOSING OPTIMUM PARAMETERS IN NUMERICAL WEATHER PREDICTION[J].Acta Meteorologica Sinica,1991,5(5):598-607. |
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| Authors: | Liu Jinda and Yan Hong |
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| Institution: | National Meteorological Center, State Meteorological Administration, Beijing;National Meteorological Center, State Meteorological Administration, Beijing |
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| Abstract: | The steepest descent(or ascent)search is employed for finding optimum diffusion coefficients in T42L9G model,with a view to improving the model's computational stability or prediction accuracy.The method of the steepest descent search is first described,in which the golden section search is chosen as the fundamental one- dimensional search used in the multi-dimentional steepest descent search,and then the optimization of the dif- fusion coefficients is described. |
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| Keywords: | steepest descent search one-dimensional search golden section search optimum diffusion coefficients optimum parameters |
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