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。
Background error covariance is an important part of variational data assimilation system, which is used to spread the observation information to other grid points and vertical levels of the model.
背景误差协方差是变分资料同化系统中的一个重要组成部分，能将观测信息从观测点传播到周围的模式格点和垂直层上。
Considering that the model is traditionally supposed to be exact and only initial data fields are amended in Adjoint Assimilation System (AAS).
鉴于传统的四维资料伴随模式同化系统都是假设模式完全正确仅对初始场进行修正。
The South China Sea ocean Database (SCSODB) collects and integrates multi-disciplinary ocean observational data, remote sensing data, model simulation data, assimilation data and various products.
南海海洋科学数据库数据资源包括多学科海洋观测数据，遥感数据，海洋模型模拟数据，同化数据以及各类数据产品。
In this paper, the variational data assimilation of two kinds of physical model including "on-off"...
本文研究了两类含有“开关”的物理过程的变分资料同化问题。
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。
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。
The purpose of this paper is to explore the performances of different model error scheme in soil moisture data assimilation.
本文主要目的是探讨不同模式误差方案在土壤湿度同化中的性能。
The purpose of this paper is to explore the performances of different model error scheme in soil moisture data assimilation.
本文主要目的是探讨不同模式误差方案在土壤湿度同化中的性能。
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