Accuracy assessment of recent ocean tide models

Over 20 global ocean tide models have been developed since 1994, primarily as a consequence of analysis of the precise altimetric measurements from TOPEX/POSEIDON and as a result of parallel developments in numerical tidal modeling and data assimilation. This paper provides an accuracy assessment of 10 such tide models and discusses their benefits in many fields including geodesy, oceanography, and geophysics. A variety of tests indicate that all these tide models agree within 2-3 cm in the deep ocean, and they represent a significant improvement over the classical Schwiderski 1980 model by approximately 5 cm rms. As a result, two tide models were selected for the reprocessing of TOPEX/POSEIDON Geophysical Data Records in late 1995. Current ocean tide models allow an improved observation of deep ocean surface dynamic topography using satellite altimetry. Other significant contributions include theft applications in an improved orbit computation for TOPEX/POSEIDON and other geodetic satellites, to yield accurate predictions of Earth rotation excitations and improved estimates of ocean loading corrections for geodetic observatories, and to allow better separation of astronomical tides from phenomena with meteorological and geophysical origins. The largest differences between these tide models occur in shallow waters, indicating that the current models are still problematic in these areas. Future improvement of global tide models is anticipated with additional high-quality altimeter data and with advances in numerical techniques to assimilate data into high-resolution hydrodynamic models.

[1]  B. Haurwitz,et al.  The diurnal and semidiurnal barometric oscillations global distribution and annual variation , 1973 .

[2]  R. Reynolds,et al.  An orthogonalized convolution method of tide prediction , 1975 .

[3]  E. W. Schwiderski,et al.  On charting global ocean tides , 1980 .

[4]  P. Mazzega.  M2 model of the global ocean tide derived from SEASAT altimetry , 1985 .

[5]  R. Ray,et al.  Radial deformation of the earth by oceanic tidal loading , 1989 .

[6]  Olivier Francis,et al.  Global charts of ocean tide loading effects , 1990 .

[7]  Jean-Marc Molines,et al.  Improving ocean tide predictions by using additional semidiurnal constituents from spline interpolation in the frequency domain , 1991 .

[8]  Richard D. Ray,et al.  Energetics of global ocean tides from Geosat altimetry , 1991 .

[9]  George H. Born,et al.  The global structure of the annual and semiannual sea surface height variability from Geosat altimeter data , 1992 .

[10]  Richard D. Ray,et al.  Global ocean tide models on the eve of TOPEX/Poseidon , 1993, IEEE Trans. Geosci. Remote. Sens..

[11]  D. Cartwright,et al.  On the radiational anomaly in the global ocean tide with reference to satellite altimetry , 1994 .

[12]  C. Provost,et al.  Spectroscopy of the world ocean tides from a finite element hydrodynamic model , 1994 .

[13]  Checking and correcting the tidal gravity parameters of the Icet Data Bank , 1994 .

[14]  A. Bennett,et al.  TOPEX/POSEIDON tides estimated using a global inverse model , 1994 .

[15]  D. Chelton,et al.  Aliased tidal errors in TOPEX/POSEIDON sea surface height data , 1994 .

[16]  S. Bettadpur,et al.  Geographical representation of radial orbit perturbations due to ocean tides: Implications for satellite altimetry , 1994 .

[17]  Bob E. Schutz,et al.  Precision orbit determination for TOPEX/POSEIDON , 1994 .

[18]  R. D. Ray,et al.  Diurnal and Semidiurnal Variations in the Earth's Rotation Rate Induced by Oceanic Tides , 1994, Science.

[19]  Ernst J. O. Schrama,et al.  A preliminary tidal analysis of TOPEX/POSEIDON altimetry , 1994 .

[20]  C. Shum,et al.  Tidal corrections in the TOPEX/POSEIDON geophysical data records , 1994 .

[21]  S. Desai,et al.  Empirical ocean tide models estimated from TOPEX/POSEIDON altimetry , 1995 .

[22]  Steven M. Klosko,et al.  The temporal and spatial characteristics of TOPEX/POSEIDON radial orbit error , 1995 .

[23]  Carl Wunsch,et al.  The global frequency-wavenumber spectrum of oceanic variability estimated from TOPEX/POSEIDON altimetric measurements , 1995 .

[24]  M. Tsimplis,et al.  A two‐dimensional tidal model for the Mediterranean Sea , 1995 .

[25]  M. Ooe,et al.  Ocean tide model obtained from TOPEX/POSEIDON altimetry data , 1995 .

[26]  O. B. Andersen,et al.  Intercomparison of recent ocean tide models , 1995 .

[27]  N. K. Pavlis,et al.  Estimation of main tidal constituents from TOPEX altimetry using a Proudman function expansion , 1995 .

[28]  C. Provost,et al.  Ocean Tides for and from TOPEX/POSEIDON , 1995, Science.

[29]  Ole Baltazar Andersen,et al.  Global ocean tides from ERS 1 and TOPEX/POSEIDON altimetry , 1995 .

[30]  Gary D. Egbert,et al.  Diurnal/semidiurnal oceanic tidal angular momentum: Topex/Poseidon Models in comparison with Earth's rotation rate , 1995 .

[31]  D. Agnew.  Ocean-load tides at the South Pole : a validation of recent ocean-tide models , 1995 .

[32]  Lakshmi Kantha,et al.  Barotropic tides in the global oceans from a nonlinear tidal model assimilating altimetric tides: 1. Model description and results , 1995 .

[33]  O. Francis,et al.  Comparison of recent ocean tide models using ground‐based tidal gravity measurements , 1996 .

[34]  F. Lyard.  The tides in the Arctic Ocean from a finite element model , 1997 .