Finite Element Modeling of Coastal Circulation [report]

Daniel R. Lynch, Christopher E. Naimie
1999 unpublished
LONG-TERM GOALS To develop finite element procedures for nearshore and shelf-scale operations using unstructured grids which can be adapted in a real time data assimilative manner. Initial application is to the Yellow Sea, with technology transfer from parallel efforts in the Gulf of Maine. OBJECTIVES • Develop a realistic circulation model for the Yellow Sea. Processes must include tides and tidal rectification, wind, remote forcing, and baroclinic forcing. • Develop and archive climatological
more » ... hive climatological circulation for the Yellow Sea, in 6 bimonthly seasons. • Develop data-assimilative methods for shipboard limited-area nowcasting and forecasting using inverse methods and the above results as prior estimates. APPROACH The work is carried out in collaboration with Dr. Cheryl Ann Blain of NRL. The climatological circulation is computed using full-physics prognostic models. All calculations are fully 3D. Archived physical fields are web served both in raw data and graphical form. New data-assimilation software and analytical approaches are tested first in the Gulf of Maine context, where the phenomena are well understood and data is relatively abundant; then in the Yellow Sea via Observational System Simulation Experiments. Beta versions of software are distributed within the Quoddy Users' Group for testing and refinement. Mature models and data products are transferred to NRL. WORK COMPLETED We have finalized our 3D climatological seasonal circulation study of the Yellow and Bohai Seas under combined dynamics resulting from baroclinic, wind, and tidal forcing, as well as mean river input from the Changjiang River (Naimie et al. (1999)).
doi:10.21236/ada619287 fatcat:f3bnq5whavfbjcu6w3k35gtvhq