Abstract
Ocean state estimation is a powerful method to test the consistency of data sets assimilated into an Ocean General Circulation Model (OGCM) among each other and with the initial and boundary conditions of the model. We apply the GOCE-GRACE combined GOCO01s geoid model to reference temporal Mean Sea Surface (MSS) height measured from satellite altimetry to derive the Mean Dynamic Topography (MDT). The consistency of this MDT with ocean and atmospheric data is tested through application of the GECCO (German part of Estimating the Circulation and Climate of the Ocean) model. Three optimizations are performed: One as a reference run applying usual data sets but without assimilation of MDT, and two integrations applying different MSS models in the computation of the MDT. We find improved performance of the state estimation, if MDT is assimilated. The choice of the MSS, however, has no significant impact on the optimization. The MDT is overall consistent with both, the other assimilated ocean data sets as well as the atmospheric forcing.
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References
Andersen OB (2010) The DTU10 Gravity field and Mean sea surface. Second international symposium of the gravity field of the Earth (IGFS2), Fairbanks, Alaska.
Bingham RJ, Knudsen P, Andersen O, Pail R (2011) An initial estimate of the North Atlantic steady-state geostrophic circulation from GOCE. Geophys Res Lett 38:L01606. doi:10.1029/2010GL045633
Johannessen JA, Balmino G, Le Provost C, Rummel R, Sabadini R, Sunkel H, Tscherning CC, Visser P, Woodworth P, Hughes C, LeGrand P, Sneeuw N, Perosanz F, Aguirre-Martinez M, Rebhan H, Drinkwater M (2003) The European gravity field and steady state ocean circulation explorer satellite mission: impact in geophysics. Surv Geophys 24:339–386
Knudsen P, Bingham R, Andersen O, Rio MH (2011) A global mean dynamic topography and ocean circulation estimation using a preliminary GOCE gravity model. J Geod 85:861–879. doi:10.1007/s00190-011-0485-8
Köhl A, Stammer D (2008) Variability of the meridional overturning in the North Atlantic from the 50 years GECCO state estimation. J Phys Oceanogr 38:1913–1930
Large WG, Yeager SG (2009) The global climatology of an interannually varying air-sea flux data set. Clim Dyn 33:341–364
Marshall J, Adcroft A, Hill C, Perelman L, Heisey C (1997) A finite-volume, incompressible Navier Stokes model for studies of the ocean on parallel computers. J Geophys Res 102(C3): 5753–5766
Pail R et al (2010) Combined satellite gravity field model GOCO01S derived from GOCE and GRACE. Geophys Res Lett 37:L20314. doi:10.1029/2010GL044906
Schaeffer P et al (2010) The new CNES CLS 2010 mean sea surface. Oral presentation at OSTST 2010 meeting. http://www.aviso.oceanobs.com/fileadmin/documents/OSTST/2010/oral/19_Tuesday/Schaeffer.pdf
Siegismund F (2013) Assessment of optimally filtered recent geodetic Mean Dynamic Topographies. J Geophys Res 118:1–10. doi:10.1029/2012JC008149
Stammer D, Köhl A, Wunsch C (2007) Impact of accurate geoid fields on estimates of the ocean circulation. J Atmos Ocean Technol 24:1464–1478. doi:10.1175/JTECH2044.1
Wunsch C (1996) The ocean circulation inverse problem. Cambridge University Press, Cambridge, p 458
Acknowledgments
This study was conducted as part of the Geotechnology program REAL-GOCE, funded by the German Federal Ministry of Education and Research (BMBF) and the German Science Foundation (DFG), and is a contribution to The Cluster of Excellence “Integrated Climate System Analysis and Prediction” (CliSAP) of the University of Hamburg, funded by the DFG.
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Siegismund, F., Köhl, A., Stammer, D. (2014). Consistency of GOCE Geoid Information with in-situ Ocean and Atmospheric Data, Tested by Ocean State Estimation. In: Flechtner, F., Sneeuw, N., Schuh, WD. (eds) Observation of the System Earth from Space - CHAMP, GRACE, GOCE and future missions. Advanced Technologies in Earth Sciences. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-32135-1_17
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DOI: https://doi.org/10.1007/978-3-642-32135-1_17
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