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Long-term stability of altimetric data with applications to mean sea-level change

  • P. Moore
  • S. Carnochan
  • M. D. Reynolds
  • P. E. Sterlini
Conference paper
Part of the International Association of Geodesy Symposia book series (IAG SYMPOSIA, volume 121)

Abstract

The oceanographic community has access to near 14 years of altimetric data ranging from GEOSAT in 1985–1989 to the current TOPEX/Poseidon and ERS-2 missions. For sea­level change studies careful validation is required to avoid contamination of the results by spurious non­oceanographic effects. In this study we first utilise in situ tide gauge data to monitor stability of the TOPEX/Poseidon data base. This series is linked to both ERS satellites by dual satellite crossovers. The analysis is then extended to incorporate GEOSAT ERM data through tide gauge enhanced dual satellite crossovers with TOPEX. Results of the stability analysis are used to consider global mean sea-level change over the period 1986–1998.

Keywords

Altimetry mean sea-level change 

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References

  1. Benveniste, J (1998) Calibration/validation of ERS-2 altimetryESA publication in press.Google Scholar
  2. Christensen, EJ . et al. (1994). Calibration of TOPEX/Poseidon at Platform HarvestJ Geophys. Res, 99, pp 24465–24486.CrossRefGoogle Scholar
  3. Eanes R J and S V Bettadpur (1995). The CSR 3.0 global ocean tide modelCSR-TM-95-06, Center for Space Research, University of Texas at Austin.Google Scholar
  4. Francis, CR (1993). The height calibration of the ERS-1 radar altimeterProceedings of the First ERS-1 Symposium, ESA SP-359, pp 381–394.Google Scholar
  5. Gaspar P, F Ogar, P-Y Le Traon and OZZanife (1994). Estimating the sea state bias of the TOPEX and Poseidon altimeters from crossover differences. J Geophys. Res., 99, pp 24981– 24994.CrossRefGoogle Scholar
  6. Haines BJ and YE Bar-Server (1998). Monitoring the TOPEX microwave radiometer with GPS; Stability of columnar water vapour measrurements. Geophys. Res Lett, 25, No. 19, pp 3563–3566CrossRefGoogle Scholar
  7. Hayne G, S Hancock III and C Purdy (1994). TOPEX altimeter range stability estimates from calibration mode data. TOPEX/Poseidon Research News3, pp 18–20.Google Scholar
  8. Kubitschek DG et al. (1997). Calibration methods for the TOPEX and Poseidon altimetry systems (abstract). Annales geophys, 15, Suppl. 1, p. C196.Google Scholar
  9. Mitchum GT (1998). Monitoring the stability of satellite altimeters with tide gauges. J. Atmos. Oceanic Tech, 15, pp 721–730.CrossRefGoogle Scholar
  10. Moore P et al. (1999a). Investigation of the stability of the ERS-1 range bias through tide guage augmented altimetry. J. Geophys. Resin press.Google Scholar
  11. Moore P, S Carnochan, RJ Walmsley (1999b). Stability of ERS altimetry during the tandem mission. Geophys. Res. Lett 26, No 3, pp 373–376.CrossRefGoogle Scholar
  12. Nerem, RS et al. (1997). Improved determination of global mean sea-level variations using TOPEX/Poseidon data. Geophys. Res. Lett. 24, No. 11, pp 1331–1334.CrossRefGoogle Scholar
  13. Rosborough G W (1986).Satellite orbit perturbations due to the geopotential. CSR-86-1, Center for Space Research, University of Texas at Austin.Google Scholar
  14. Scharroo R and P Visser (1998). Precise orbit determination and gravity field improvement for the ERS satellites. J. Geophys. Res., 103, pp 8113–8127.CrossRefGoogle Scholar
  15. Sturges, W . (1987) Large scale coherence of sea-level at very low frequencies. J Phys. Ocean., 17, pp 2084–2094.CrossRefGoogle Scholar
  16. Tapley BD et al. (1994). Precision orbit determination for TOPEX/Poseidon. J Geophys. Res. 99, pp 24383–24404.CrossRefGoogle Scholar
  17. Wagner CA, J Klokocnik R Cheney (1997). Making the connection between GEOSAT and TOPEX/Poseidon. J. Geodesy71, pp 272–281.Google Scholar

Copyright information

© SPringer-Verlag Berlin Heidelberg 2000

Authors and Affiliations

  • P. Moore
    • 1
  • S. Carnochan
    • 1
  • M. D. Reynolds
    • 1
  • P. E. Sterlini
    • 1
  1. 1.Department of GeomaticsUniversity of Newcastle-upon-TyneUK

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