A New OGMOC Mean Dynamic Topography Model – DTU17MDT

P. Knudsen, O. Andersen, T. Fecher, T. Gruber , N. Maximenko

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    Abstract

    Within the ESA supported Optimal Geoid for Modelling Ocean Circulation (OGMOC) project a new geoid model have been derived. It is based on the GOCO05C setup though the newer DTU15GRA altimetric surface gravity has been used in the combination. Subsequently the model has been augmented using the EIGEN-6C4 coefficients to d/o 2160. The new DTU17MDT has been derived using this new geoid model and the DTU15MSS mean sea surface. Compared to other geoid models the new OGMOC geoid model has been optimized to avoid striations and
    orange skin like features. Finally, the filtering was reevaluated by adjusting the quasi-gaussian filter width to optimize the fit to drifter velocities. The results show that the new geodetic MDT improves the resolution of the details of the ocean circulation.
    Original languageEnglish
    Publication date2018
    Publication statusPublished - 2018
    Event25 years of progress in radar altimetry symposium - , Portugal
    Duration: 24 Sept 201829 Sept 2018

    Conference

    Conference25 years of progress in radar altimetry symposium
    Country/TerritoryPortugal
    Period24/09/201829/09/2018

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