A New OGMOC Mean Dynamic Topography Model – DTU17MDT

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

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 language	English
Publication date	2018
Publication status	Published - 2018
Event	25 years of progress in radar altimetry symposium - , Portugal Duration: 24 Sept 2018 → 29 Sept 2018

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Conference	25 years of progress in radar altimetry symposium
Country/Territory	Portugal
Period	24/09/2018 → 29/09/2018

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title = "A New OGMOC Mean Dynamic Topography Model – DTU17MDT",

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.",

author = "P. Knudsen and O. Andersen and T. Fecher and T. Gruber and N. Maximenko",

year = "2018",

language = "English",

pages = "213--214",

note = "25 years of progress in radar altimetry symposium ; Conference date: 24-09-2018 Through 29-09-2018",

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TY - ABST

T1 - A New OGMOC Mean Dynamic Topography Model – DTU17MDT

AU - Knudsen, P.

AU - Andersen, O.

AU - Fecher, T.

AU - Gruber , T.

AU - Maximenko, N.

PY - 2018

Y1 - 2018

N2 - 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.

AB - 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.

M3 - Conference abstract for conference

SP - 213

EP - 214

T2 - 25 years of progress in radar altimetry symposium

Y2 - 24 September 2018 through 29 September 2018

ER -

A New OGMOC Mean Dynamic Topography Model – DTU17MDT

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