four-dimensional variational data assimilation system 四维变分资料同化系统
Use radar and satellite data to improve initial humidity field and four dimensional variational data assimilation to improve initial wind field, and simulate it with MM5, which has improved the simulation ability of Meiyu heavy rainfall.
利用雷达、卫星资料对初始湿度场的改进和四维变分同化对初始风场的改进进行中尺度数值模式(MM5)模拟，提高了梅雨暴雨模拟能力。
参考来源 - 梅雨期江淮暴雨发生发展动力学机制的初步分析研究·2,447,543篇论文数据，部分数据来源于NoteExpress
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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