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Verification of TOPEX/Poseidon Wave Data Against Buoys Off the West Coast of Portugal

[+] Author Affiliations
Nuno M. Moreira, Henrique Oliveira Pires

Instituto de Meteorologia, Lisboa, Portugal

M. Teresa Pontes

Instituto Nacional de Energia e Tecnologia Industrial, Lisboa, Portugal

Carlos da Camara

Universidade de Lisboa, Lisboa, Portugal

Paper No. OMAE2002-28254, pp. 791-798; 8 pages
doi:10.1115/OMAE2002-28254
From:
  • ASME 2002 21st International Conference on Offshore Mechanics and Arctic Engineering
  • 21st International Conference on Offshore Mechanics and Arctic Engineering, Volume 2
  • Oslo, Norway, June 23–28, 2002
  • Conference Sponsors: Ocean, Offshore, and Arctic Engineering Division
  • ISBN: 0-7918-3612-6 | eISBN: 0-7918-3599-5
  • Copyright © 2002 by ASME

abstract

The goals of the present work are to compare TOPEX/Poseidon (T/P) significant wave height (HS ) with buoy data off the West Coast of Portugal and to evaluate the performance of wave period algorithms. Altimeter and buoy data are compared according to co-location criteria proposed in literature. A new method for analysing the variation of quality parameters in the space and time domains is presented. The use of wave group velocity as a way of relating space and time lags is also proposed. Local calibrations for T/P HS are computed, with the interval of degradation of TOPEX altimeter considered separately. It is found that an algorithm for mean wave zero-crossing period (ZT ) can be used in the region under consideration, the root mean square error (Erms) being lower than 0.7 s if local coefficients are used.

Copyright © 2002 by ASME
Topics: Waves , Shorelines , Buoys

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