Abstract: he authors have developed an assimilation system toward coastal data assimilation around Japan, which consists of a four-dimensional variational (4DVAR) assimilation scheme with an eddy-resolving model in the western North ...

Abstract: The authors developed a system for simulating climate variation by constraining the ocean component of a coupled atmosphere?ocean general circulation model (CGCM) through ocean data assimilation and conducted a climate ...

Abstract: our-dimensional variational data assimilation (4D-Var) on a seasonal-to-interdecadal time scale under the existence of unstable modes can be viewed as an optimization problem of synchronized, coupled chaotic systems. The ...

Abstract: AbstractAs part of the ongoing development of an ocean data assimilation system for operational ocean monitoring and seasonal prediction, an adjoint sea ice model was developed that incorporates sea ice rheology, which was ...