Circulation from a joint gravity field solution determination of the general ocean

作者: B. D. Tapley , R. S. Nerem , C. K. Shum , J. C. Ries , D. N. Yuan

DOI: 10.1029/GL015I010P01109

关键词: Gravitational fieldOcean surface topographyPosition (vector)GeoidGeologyGeophysicsAltimeterSatelliteGeodesyOrbit (dynamics)Ocean current

摘要: With the development of satellite altimetry, it is possible to infer geostrophic velocity surface ocean currents, if geoid and position are known accurately. Errors in current models orbit computations, both due primarily errors Earth's gravity field model, have limited use altimeter data for this purpose. The objective investigation demonstrate that can be used a joint solution simultaneously estimate quasi-stationary sea topography, ζ, model field. Satellite tracking from twelve satellites were along with Seasat solution. estimated ζ compares well at long wavelengths hydrographic ζ. Covariance analysis indicates separable up degree 9, which point error comparable signal

参考文章(14)
C. K. Shum, B. D. Tapley, D. N. Yuan, J. C. Ries, B. E. Schutz, An Improved Model for the Earth’s Gravity Field ggg. pp. 97- 108 ,(1990) , 10.1007/978-1-4612-3404-3_12
B. D. Tapley, G. W. Rosborough, Geographically correlated orbit error and its effect on satellite altimetry missions Journal of Geophysical Research. ,vol. 90, pp. 11817- 11831 ,(1985) , 10.1029/JC090IC06P11817
Gerald A Meehl, None, Characteristics of Surface Current Flow Inferred from a Global Ocean Current Data Set Journal of Physical Oceanography. ,vol. 12, pp. 538- 555 ,(1982) , 10.1175/1520-0485(1982)012<0538:COSCFI>2.0.CO;2
Byron D. Tapley, George H. Born, Michael E. Parke, The SEASAT altimeter data and its accuracy assessment Journal of Geophysical Research. ,vol. 87, pp. 3179- 3188 ,(1982) , 10.1029/JC087IC05P03179
Chang-Kou Tai, Carl Wunsch, An Estimate of Global Absolute Dynamic Topography Journal of Physical Oceanography. ,vol. 14, pp. 457- 463 ,(1984) , 10.1175/1520-0485(1984)014<0457:AEOGAD>2.0.CO;2
F. J. Lerch, J. G. Marsh, S. M. Klosko, R. G. Williamson, Gravity model improvement for SEASAT Journal of Geophysical Research. ,vol. 87, pp. 3281- 3296 ,(1982) , 10.1029/JC087IC05P03281