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Geodesy in the Year 2000 (1990) / Chapter Skim
Currently Skimming:

Common Interests in Geodetic and Oceanographic Research
Pages 85-90

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From page 85...
... Both WOCE and TOGA include as a key element measurements of sea level using In-situ and satellite systems and such measurements effectively require precision in position and gravity field knowledge that are current geodetic research. These areas of common interest are reviewed to understand the accuracy of the relevant geodetic quantities that would significantly help oceanographic research.
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From page 86...
... , they provide essential information about the deep ocean layers, whose motion can be quite different, even opposite, to the surface motion defined by the difference between altimetric and geoidal height. To improve on the oceanographic capabilities, the combined error of altimetric sea surface minus geoid heights should not exceed about 10 cm rms over all wavelengths larger than that implied by the Rossby radius of deformation.
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From page 87...
... have argued that the installation on the order of 100 well distributed and calibrated tide stations, accurately positioned with differential GPS measurements relative to a network of VLBI stations, plus another 150 less accurately positioned tide stations, would provide absolute sea level accurately enough for tropical studies (e.g., Wyrtki, 1984) and global sea level studies.
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From page 88...
... Even though any such tilts in mean sea surface would be interpreted in conjunction with other oceanographic data, it is highly desirable to avoid ambiguities by a long-term program of gravity monitoring. Any such geoid changes may also cause changes in the position of the geocentre, which affects the reference system from which altimetric satellites are observed and ultimately, the accuracy of altimetric observations of the ocean.
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From page 89...
... 91 8373-8386 1986. , , , WCRP-Joint Scientific Committee and Committee on Climatic Changes and the Ocean, Large-Scale Oceanographic Experiments in the World Climate Research Programme, WCRP Publication Series No 1, 121 pp., Intergovernmental Oceanographic Commission (UNESCO)
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From page 90...
... J Eanes Tapley, Secular Variation of Earth's Gravitational Coeffi Hi ant from T.A(~.F.n.~ and Nnn_Ti A=1 Ammm1 magi ^~ ~¢ Earth Rotation, Nature, 303, 757-762, 1983
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Key Terms

  • gravity field
  • sea surface
  • tide stations
  • altimetric satellites
  • tide gauges

  • reference frames
  • reference frame
  • ocean circulation
  • global sea
  • accurately positioned

  • altimetric measurement
  • jet propulsion
  • altimetric sea
  • geopotential research
  • vlbi stations

  • geocentric reference
  • world climate
  • absolute sea
  • relative positions
  • publication series

  • climate research
  • wcrp publication
  • lageos satellite
  • corrected altimetric
  • science steering

  • mean sea
  • propulsion laboratory
  • positioned tide
  • hydrographic data
  • research programme


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