T63 资料同化中分析增量垂直插值方案及其试验
Analysis Increment Vertical Interpolation Scheme in T63 Data Assimilation and Its Experiments
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摘要: 文章介绍了国家气象中心T63资料同化系统中分析增量p-η坐标变换的垂直插值方案以及与全量插值方案对比试验的结果。试验表明,增量方案可减小垂直插值误差,提高初值质量,从而对改进资料同化和中期数值天气预报起到一定作用。Abstract: The analysis increment vertical interpolation scheme with the help of p-η coordinate transformation in T63 data assimilation system in NMC, SMA is described and the comparison results of control test with the ordinary interpolation scheme are presented. It is shown that increment scheme can reduce vertical interpolation error and provide better initial values. Therefore, it plays an important role in improving data assimilation and model forecasting.
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