定义 中文名称： 四维资料同化 英文名称： four-dimensional data assimilation 定义： 将非常规时刻观测资料及时引入数值模式的初始场和预报初估场，组成一种数值天气分析-预报系统，使分析和预报初估场同时进行并不断得到更新，得出连续的天气分析
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Intermittent four-dimensional data assimilation 间歇资料四维同化
four-dimensional variational data assimilation 四维变分同化 ; 四维变分资料同化
four-dimensional variational data assimilation system 四维变分资料同化系统
The four-dimensional data assimilation is to integrate the current and past data into a forecast model equation for providing time continuity and dynamic coupling.
应用伴随方法求解以数值预报方程作为约束条件的四维变分资料同化方案 ，关键问题是如何构造伴随模式。
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.
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。
The key problem of four-dimensional variational data assimilation method, which solves the constraining numerical predict equations through accompanied model, is how to establish an accompanied model.
应用伴随方法求解以数值预报方程作为约束条件的四维变分资料同化方案，关键问题是如何构造伴随模式。
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