BMT Fluid Mechanics Limited

Index of Help Pages

Frequently Asked Questions

The answers to some frequently asked questions about Global Wave Statistics Online can be found here.

Using the Web Site

The following pages describe the use of the Global Wave Statistics Online site. They are displayed as context sensitive help from the "Help" links on each page of the site.

• Selecting a geographic location.
• Confirming the location.
• Reviewing the data availability.
• Buying data for more than one area.
• Purchasing the area using WorldPay.
• The WorldPay Confirmation of Purchase.
• Choosing an analysis.
• Wind speed probability.
• Wave height and period scatter tables.
• Extreme wave heights.
• Persistence of storms and calms.

The data, and the NMIMET analysis used to create it

The data in Global Wave Statistics Online is based on visual observations of wind speed and wave height obtained from the UK Meteorological Office. The following pages explain in more detail the way in which the data was generated and loaded into the database.

• Review of Available Wave Data Sources

  • Instrumental Data
  • Hindcast Data
  • Visual Data
  • The Source Data
  • The Observations
  • The Marine Databank
• The NMIMET Method of Analysis
  • Data Retrieval
  • The NMIMET Analysis
  • Enhanced Wave Height Statistics
  • Synthesis of Wave Height and Period Statistics
  • Area and Seasonal Subdivisions
  • Review of Area Climatology
  • Summary of Database Organisation
• Wind Statistics
• Scatter Tables (Wave Height and Period)
• Extreme Wave Height Estimation
• Persistence of Storms and Calms
• Reliability and Validation
  • Validation of the NMIMET Analysis
  • Wave Height Data
  • Wave Period Data
  • Data Quality Control
  • Comparison with 'Ocean Wave Statistics'
  • Extreme Wave Height Validation
  • Persistence Analysis Validation
• European Database
• References

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