ROMS/TOMS Tangent Linear and Adjoint Models: Testing and Applications.

摘要

Our long-term technical goal is to develop and test the Tangent Linear Model (TLM), Representer Model (RPM), and Adjoint Model (ADM) versions of ROMS (Regional Ocean Modeling System) and TOMS (Terrain-following Ocean Modeling System) for variational data assimilation, ensemble forecasting, and stability analysis. The primary focus is to develop a general platform for strong and weak constraint 4D Variational data assimilation (4DVar); to develop an ensemble prediction capability based on optimal perturbations and stochastic optimals; and to develop stability analysis tools based on eigenmodes and singular vectors to explore the role of environmental stochastic forcing in shaping ocean circulation. Our long-term scientific goal is to model and predict the mesoscale circulation and the ecosystem response to physical forcing in the various regions of the World Ocean through state estimation.