全球最优插值客观分析

主要叙述国家气象中心实时运行的全球资料同化系统中的客观分析方案，该方案采用最优插值统计方法，使用所有可以使用的各种类型有不同误差的观测资料和模式的６ｈ预报值，给出数值形式的全球分析值。在两年的业务运行中，为Ｔ４２中期数值预报谱模式提供了较好的初始场。

THE GLOBAL OPTIMUM INTERPOLATION OBJECTIVE ANALYSIS

This paper mainly describes the objective analysis scheme used in the Global Data Assimilation system. real-timely running in the National Meteorological Center (NMC) of SMA. with the optimum interpolating statistical method. This scheme uses all appropriate types of available observation and the six hour forecasting values of spectral model, it produces the global analysis values in numerical form. In the two years operational running a better initial condition has been provided for the spectral forcasting model. with a wave spetral tranctinn of 42. in the medium range numerical weather prediction.