| NMC第二代中期数值预报系统误差的动力诊断 |
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| 引用本文： | 刘还珠,滕俏彬.NMC第二代中期数值预报系统误差的动力诊断[J].气象学报,1999,57(2):143-156. |
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| 作者姓名： | 刘还珠 滕俏彬 |
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| 作者单位： | 国家气象中心 |
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| 摘 要： | 利用国家气象中心第二代中期数值预报模式计算了１月和７月的预报诊断量。计算结果表明，新一代模式在动力外强迫作用、辐射通量和对流参数化等物理过程方面的改进，使该模式的预报比第一代模式有了较大的改善，模式预报的系统误差明显减小。通过对角动量、热量和水汽的经向输送和收支平衡的分析，认为该模式在地形处理、陆面过程、云辐射和积云对流参数化等物理过程还有待进一步改进。
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| 关 键 词： | T63L16模式，系统误差，动力诊断 |
| 收稿时间： | 1997/7/11 0:00:00 |
| 修稿时间： | 1997/11/6 0:00:00 |
THE DYNAMICAL DIAGNOSIS OF THE SYSTEMATIC ERRORS OF THE SECOND GENERATION MEDIUM-RANGE NWP MODEL AT CNMC |
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| Liu Huanzhu and Teng Qiaobin.THE DYNAMICAL DIAGNOSIS OF THE SYSTEMATIC ERRORS OF THE SECOND GENERATION MEDIUM-RANGE NWP MODEL AT CNMC[J].Acta Meteorologica Sinica,1999,57(2):143-156. |
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| Authors: | Liu Huanzhu and Teng Qiaobin |
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| Institution: | National Meteorological Center, China Meteorological Administration, Beijing, 100081;National Meteorological Center, China Meteorological Administration, Beijing, 100081 |
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| Abstract: | Upon using the dynamic statistics of the atmospheric circulation the monthly mean forecasting fields of January and July of 1996 obtained from the second generation medium range numerical weather prediction(NWP) model(T63) have been investigated. The results indicate that the new generation model has been improved remarkably in comparison with the old one. The systematic prediction errors of model have been reduced significantly. However there still exist some differences in the distributions in wind, temperature and moisture fields between forecasts and observation. After having diagnosed the transfers and budgets of angular momentum, heat and water vapour of the T63 model, and compared these with observations, it was suggested that, to improve the model performance, the treatments of orography, land surface processes, cloud radiation and convection parameterization in the model need to be improved further. |
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| Keywords: | T63L16 model Model systematic errors Dynamical diagnosis |
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