Data assimilation (DA) is a computational technique that integrates numerical simulation models and observational data based on Bayesian statistics. DA has developed mainly in meteorology and oceanography, and it is the foundation of modern weather forecasting now.
In this lecture, we learn a couple of basic DA techniques, such as Kalman filter, ensemble Kalman filter, particle filter, and four-dimensional variational method. Then we learn how they are applied in practical problems in various fields. We also experience the DA techniques through their actual programming.