| A SEARCH TECHNIQUE FOR CHOOSING OPTIMUM PARAMETERS IN NUMERICAL WEATHER PREDICTION |
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| 引用本文： | Liu Jin,Yan Hong. A SEARCH TECHNIQUE FOR CHOOSING OPTIMUM PARAMETERS IN NUMERICAL WEATHER PREDICTION[J]. , 1991, 5(5): 598-607 |
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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： | 1990-11-01 |
A SEARCH TECHNIQUE FOR CHOOSING OPTIMUM PARAMETERS IN NUMERICAL WEATHER PREDICTION |
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| Liu Jinda and 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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| Affiliation: | 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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