A HINDCAST STUDY OF THE EXTREME WAVE CLIMATE OF OFFSHORE WEST AFRICA (WAX)

This paper describes the methodology and selected results of a joint industry project called WAX (West Africa Extremes) whose purpose was to develop estimates of extreme waves for the West Coast of Africa between 5o N and 15o S. Extreme waves there consist of swell propagated from distant sources associated with extra tropical storms in deep southern latitudes or from episodic enhancements of anticyclonic southeast winds off South Africa. The basic steps of the hindcast method are described: storm selection, specification of wind fields, application of a directional spectral wave prediction model, model validation and extremal analysis of results of hindcasts of the historical storm population selected. It was found that despite the special difficulties of hindcasting the wind fields of Southern Hemisphere storms caused by sparsity of meteorological data, the hindcast skill exhibited in these comparisons is comparable with the good agreement typically achieved in Northern Hemisphere basins with the hindcast methodology applied. The WAX extremes are derived from hindcasts of a population of 50 historical storms. The extremes are summarized for selected areas.

  • Supplemental Notes:
    • OTC 95, 27th Annual Offshore Technology Conf; 1-4 May 1995; Houston, Tx, USA. Procs. Vol 1, ppr OTC 7687, p 439 [13 p, 25 ref, 3 tab, 12 fig]
  • Authors:
    • Cardone, V J
    • Cooper, C K
    • Szabo, D
  • Publication Date: 1995

Language

  • English

Subject/Index Terms

Filing Info

  • Accession Number: 00718969
  • Record Type: Publication
  • Source Agency: British Maritime Technology
  • Files: TRIS
  • Created Date: Mar 27 1996 12:00AM