...括逐步订正法、混合分析、最优插值（Optimum Interpolation，OI）分析、三维变分同化（3-Dimensional Variational Assimilation，3DVAR）分析、统计最优估计以及使用截断滤波窗的变分分析。
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...正法、混合分析、最优插值（Optimum Interpolation，OI）分析、三维变分同化（3-Dimensional Variational Assimilation，3DVAR）分析、统计最优估计以及使用截断滤波窗的变分分析。
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四维变分同化 d variational data assimilation ; four-dimensional variational data assimilation
四维变分同化系统 VDRAS
三维变分同化 Dimensional Variational Assimilation ; DVAR ; three-dimensional variational assimilation
四维变分资料同化 four-dimensional variational data assimilation
区域四维变分资料同化 Area four dimensional variational data assimilation
变分四维同化 Four-dimensional variational assimilation
四维变分资料伴随同化 four-dimension adjoint variation data assimilation
最后把雷达风场和雷达湿度场同化到MM 5四维变分同化系统中。
Lastly radar wind field and radar humility field are assimilated in the MM5 4d Variational Assimilation System.
本文的工作就是多普勒雷达资料在MM 5模式中的四维变分同化试验。
This paper does the experiments of Doppler radar's Four-dimensional Variational Assimilation in MM5 model.
最后对MM5伴随模式系统进行了梯度检验，并利用实际资料进行四维变分资料同化试验。
Furthermore, the conventional observations are done in the MM5 model system, and a four-dimensional variational data assimilation test is made based on observed data.
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