Goal
1. To estimate the accuracy of the gridded and along-trak satellite observation in the Eastern Bering Sea shelf.
Preliminary results
1. Hindcast of the circulation in the Eastern Shelf
To test the quality of the mean optimized climatological SSH in the Eastern Bering Sea shelf, we
conducted we assimilated surface drifter data collected by Larson King,
Tom Weingartner and Seth Danielson (http://www.ims.uaf.edu/NPRBdrifters/)
The data assimilation model with 18km horizontal resolution was configured in the
domain shown by white rectangle in Figure 1.
Due to the absence of in situ temperature/salinity observations,
we utilized climatological distributions.
The reconstructed SSH and surface circulation for a period of 60 days are shown at Figures 2 and 3.
Figure 1. Optimized evolution of the SSH in the Eastern Bering Sea shelf derived by assimilating the surface drufters data. ( http://www.ims.uaf.edu/NPRBdrifters/ )
Figure 2. Optimized near surface currents in the Eastern Bering Sea shelf derived by assimilating the surface drufters data.
Figure 3. Optimized near surface currents in the Eastern Bering Sea shelf derived by assimilating the surface drufters data.
Preliminary conclusions from this test
Gridded SSH anomaly observations referenced with respect new MDOT can be used for data assimilation. Comparison between SSH shown at different panels at Figures 3 indicate that off-shore SSH measurements can be valuabale for reconstruction circulation in the Eastern BEring Sea shelf.