On the correction of perturbations due to data assimilation in ocean circulation modelsстатья
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Дата последнего поиска статьи во внешних источниках: 25 апреля 2017 г.
Аннотация:A method for the correction of velocities after temperature-salinity data assimilation is considered. The method is based on the spectral numerical solution of the linearised system of two-dimensional Navier-Stokes equation with Boussinesq approximation. The method is applied to the GFDL/NOAA ocean circulation model MOM_3 to correct perturbations caused by assimilation of vertical temperature profiles from the PIRATA database. The data assimilation technique used in the present study is based on the application of the Fokker-Planck equation. Several numerical experiments have been performed in the tropical Atlan tic. The results showed that the method is able to correct the velocity field smoothening unrealistic wave patterns due to assimilation. Future developments and applications of the method to geophysical research are also discussed.