(Description of Seminar 11)
Nov. 10, 1997
On last wednesday, Dr. Igor Shulman gave us a lecture about Application of Data Assimilation Techniques in Physical Oceanography. Dr. Igor Shulman is a professor of Department of Marine Sciences, University of Southern Mississippi.
Dr. Shulman first introduced three typies of data: high spatial resolution but low temporal resolution; high spatial and temporal resolution over the small area; high temporal resolution at single point.
Dr. Kolibal explained the simplication and order-reduction method. He presented the fit of feature models, the dynamic method conservation of potential vorticity, the statistical methods, the regression methods, the local inversion, the use of a coarse frid for the filter. Then he illustrated the variational methods.
He gave a brief discussion of the existing data assimilation techniques in numerical modeling of oceanic processes. The talk was focused on three cases of application of the data assimilation techniques: assimilation of satellite altimetry data into the NRL layered ocean model; assimilation of HF Doppler radar data into the hydrodynamical model of the Monterey Bay; development of optimized open boundary conditions for modeling limited area coastal models. He discussed these three cases, the approach, the numerical model and the results of numerical experiments in detail.