Coupled Ocean Circulation and Wind-Wave Models With Data Assimilation Using Altimeter Statistics

Coupled ocean wave and circulation models have been implemented under the IOEPAS program (Integrated Ocean Environment Prediction and Assimilation System). The third generation wave model, WAM and the South East Asian Ocean Model (SEAOM) based on the Princeton Ocean Model (POM) are coupled through wave-current interaction terms. The modeling capability has been improved from the altimeter data in terms of better boundary inputs. Data assimilation of altimeter data and physical measurements, if any, is a new feature of the prediction system. WAM and SEAOM run in parallel, exchanging data as they execute. This work is aimed at a comprehensive ocean modeling system for the regional seas surrounding Singapore waters.