Satellite gravity models and their use for estimating mean ocean circulation

Roland Pail; Alberta Albertella; Daniel Rieser; Jan Martin Brockmann; Wolf Dieter Schuh; Roman Savcenko

doi:10.1007/978-3-642-37222-3__36

Satellite gravity models and their use for estimating mean ocean circulation

Roland Pail, Alberta Albertella, Daniel Rieser, Jan Martin Brockmann, Wolf Dieter Schuh, Roman Savcenko

Chair of Astronomical and Physical Geodesy

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

One of the main fields of application of static gravity field models is the determination of the (geodetic) mean dynamic ocean topography (MDT) as the difference of a mean sea surface derived from multi-year satellite altimetry, and a high-resolution static geoid model. In this study the performance of several satellite-only global gravity models is evaluated based on the MDT and derived geostrophic ocean surface currents. These are the GRACE-only model ITG-Grace2010S, the GOCE-only model GOCE_TIM_R2, and the combined gravity model GOCO02S representing a consistent combination of GRACE and GOCE. The geodetic MDT results are validated against independently measured drifter data. Compared to GRACE, the new high-resolution GOCE models improve the estimates of the mean dynamic ocean topography, filtered to degree/order 180, by reducing the differences to the drifter data by 10–12 cm/s. Therefore, they contribute significantly to an improved knowledge of mean ocean circulation.

Original language	English
Title of host publication	Earth on the Edge
Subtitle of host publication	Science for a Sustainable Planet - IAG General Assembly, Proceedings
Editors	Chris Rizos, Pascal Willis
Publisher	Springer Verlag
Pages	275-281
Number of pages	7
ISBN (Electronic)	9783642372216
DOIs	https://doi.org/10.1007/978-3-642-37222-3__36
State	Published - 2014
Event	International Association of Geodesy Symposia, IAG 2011 - , Austria Duration: 28 Jun 2011 → 2 Jul 2011

Publication series

Name	International Association of Geodesy Symposia
Volume	139
ISSN (Print)	0939-9585

Conference

Conference	International Association of Geodesy Symposia, IAG 2011
Country/Territory	Austria
Period	28/06/11 → 2/07/11

Keywords

GOCE
Global gravity model
Mean dynamic topography
Ocean currents
Spherical harmonics

Access to Document

10.1007/978-3-642-37222-3__36

Cite this

Pail, R., Albertella, A., Rieser, D., Brockmann, J. M., Schuh, W. D., & Savcenko, R. (2014). Satellite gravity models and their use for estimating mean ocean circulation. In C. Rizos, & P. Willis (Eds.), Earth on the Edge: Science for a Sustainable Planet - IAG General Assembly, Proceedings (pp. 275-281). (International Association of Geodesy Symposia; Vol. 139). Springer Verlag. https://doi.org/10.1007/978-3-642-37222-3__36

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title = "Satellite gravity models and their use for estimating mean ocean circulation",

abstract = "One of the main fields of application of static gravity field models is the determination of the (geodetic) mean dynamic ocean topography (MDT) as the difference of a mean sea surface derived from multi-year satellite altimetry, and a high-resolution static geoid model. In this study the performance of several satellite-only global gravity models is evaluated based on the MDT and derived geostrophic ocean surface currents. These are the GRACE-only model ITG-Grace2010S, the GOCE-only model GOCE_TIM_R2, and the combined gravity model GOCO02S representing a consistent combination of GRACE and GOCE. The geodetic MDT results are validated against independently measured drifter data. Compared to GRACE, the new high-resolution GOCE models improve the estimates of the mean dynamic ocean topography, filtered to degree/order 180, by reducing the differences to the drifter data by 10–12 cm/s. Therefore, they contribute significantly to an improved knowledge of mean ocean circulation.",

keywords = "GOCE, Global gravity model, Mean dynamic topography, Ocean currents, Spherical harmonics",

author = "Roland Pail and Alberta Albertella and Daniel Rieser and Brockmann, {Jan Martin} and Schuh, {Wolf Dieter} and Roman Savcenko",

note = "Publisher Copyright: {\textcopyright} Springer-Verlag Berlin Heidelberg 2014.; International Association of Geodesy Symposia, IAG 2011 ; Conference date: 28-06-2011 Through 02-07-2011",

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doi = "10.1007/978-3-642-37222-3__36",

language = "English",

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Pail, R, Albertella, A, Rieser, D, Brockmann, JM, Schuh, WD & Savcenko, R 2014, Satellite gravity models and their use for estimating mean ocean circulation. in C Rizos & P Willis (eds), Earth on the Edge: Science for a Sustainable Planet - IAG General Assembly, Proceedings. International Association of Geodesy Symposia, vol. 139, Springer Verlag, pp. 275-281, International Association of Geodesy Symposia, IAG 2011, Austria, 28/06/11. https://doi.org/10.1007/978-3-642-37222-3__36

Satellite gravity models and their use for estimating mean ocean circulation. / Pail, Roland; Albertella, Alberta; Rieser, Daniel et al.
Earth on the Edge: Science for a Sustainable Planet - IAG General Assembly, Proceedings. ed. / Chris Rizos; Pascal Willis. Springer Verlag, 2014. p. 275-281 (International Association of Geodesy Symposia; Vol. 139).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Albertella, Alberta

AU - Rieser, Daniel

AU - Brockmann, Jan Martin

AU - Schuh, Wolf Dieter

AU - Savcenko, Roman

N1 - Publisher Copyright: © Springer-Verlag Berlin Heidelberg 2014.

PY - 2014

Y1 - 2014

N2 - One of the main fields of application of static gravity field models is the determination of the (geodetic) mean dynamic ocean topography (MDT) as the difference of a mean sea surface derived from multi-year satellite altimetry, and a high-resolution static geoid model. In this study the performance of several satellite-only global gravity models is evaluated based on the MDT and derived geostrophic ocean surface currents. These are the GRACE-only model ITG-Grace2010S, the GOCE-only model GOCE_TIM_R2, and the combined gravity model GOCO02S representing a consistent combination of GRACE and GOCE. The geodetic MDT results are validated against independently measured drifter data. Compared to GRACE, the new high-resolution GOCE models improve the estimates of the mean dynamic ocean topography, filtered to degree/order 180, by reducing the differences to the drifter data by 10–12 cm/s. Therefore, they contribute significantly to an improved knowledge of mean ocean circulation.

AB - One of the main fields of application of static gravity field models is the determination of the (geodetic) mean dynamic ocean topography (MDT) as the difference of a mean sea surface derived from multi-year satellite altimetry, and a high-resolution static geoid model. In this study the performance of several satellite-only global gravity models is evaluated based on the MDT and derived geostrophic ocean surface currents. These are the GRACE-only model ITG-Grace2010S, the GOCE-only model GOCE_TIM_R2, and the combined gravity model GOCO02S representing a consistent combination of GRACE and GOCE. The geodetic MDT results are validated against independently measured drifter data. Compared to GRACE, the new high-resolution GOCE models improve the estimates of the mean dynamic ocean topography, filtered to degree/order 180, by reducing the differences to the drifter data by 10–12 cm/s. Therefore, they contribute significantly to an improved knowledge of mean ocean circulation.

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KW - Ocean currents

KW - Spherical harmonics

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BT - Earth on the Edge

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T2 - International Association of Geodesy Symposia, IAG 2011

Y2 - 28 June 2011 through 2 July 2011

ER -

Pail R, Albertella A, Rieser D, Brockmann JM, Schuh WD, Savcenko R. Satellite gravity models and their use for estimating mean ocean circulation. In Rizos C, Willis P, editors, Earth on the Edge: Science for a Sustainable Planet - IAG General Assembly, Proceedings. Springer Verlag. 2014. p. 275-281. (International Association of Geodesy Symposia). doi: 10.1007/978-3-642-37222-3__36

Satellite gravity models and their use for estimating mean ocean circulation

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Keywords

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