Summary
A dynamical global ocean model is used to determine the general circulation and its associated transports from data. As a reference a surface geostrophic velocity can be calculated from the slope of the sea surface height, which is measured by satellite altimetry. To get absolute values for the sea surface elevation relative to the equipotential surface we want to assimilate not only altimeter data but also geoid heights into our global ocean model. Until nowadays the assimilation of geoid heights has been done only in few cases, because the accuracy of the available gravity models is not sufficient. With the CHAMP satellite and future satellite missions we will get highly improved gravity models. Since these data are not available yet we use the EGM96 geoid models for our recent experiments. It is planned to esitmate corrections not only for the ocean model but also for the geoid models. We want to present the technique which will be used to assimilate the geoid data into the global ocean model.
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References
Hernandez F, Schaeffer P (2000) Altimetric Mean Sea Surface and Gravity Anomaly maps Inter-Comaprisons, Technical Report no AVI-NT-011–5242-CLS, preliminary version, CLS
Jekeli C (1981) Alternative methods to smooth the earth’s gravity field. Report no 327, Ohio State University, Department of Geodetic Science and Surveying, 1958 Neil Avenue, Columbus, Ohio 43210
Maier-Reimer E, Mikolajewicz U, Hasselman K (1993) Mean circulation of the Hamburg LSG OGCM and its sensitivity to the thermohaline surface forcing. J Phys Oceanogr, 23/4, 731–754
Rummel R (1993) Principle of satellite Altimetry and Elimination of radial Orbit Errors. In: Rummel R, Sanso F (eds), Satellite Altimetry in Geodesy and Oceanography. Springer Berlin Heidelberg
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Seufer, V., Schröter, J., Wenzel, M., Keller, W. (2003). Assimilation of Altimeter and Geoid Data into a Global Ocean Model. In: Reigber, C., Lühr, H., Schwintzer, P. (eds) First CHAMP Mission Results for Gravity, Magnetic and Atmospheric Studies. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-38366-6_28
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DOI: https://doi.org/10.1007/978-3-540-38366-6_28
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-53544-4
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