This report is part of the climatic study for Tonga, and describes the comparison of wind and wave data available for Tonga area. The climatic study in the SOPAC region is part of the Norwegian assistance to SOP AC for the period 1992 - 1993. The location of the area is shown on Figure 1. The goal of the study is to find correction factor that can be used to include the U.K. Met. office model data for wind and waves in the measured data series for the area. Such use of model data will give long series of data that can be used to assess statistics of wind and wave in general and available wave energy in particular. A list of data sources is found in Chapter 2 together with the amount of simultaneous data used in the comparison. The comparison is mainly based on the three parameter Weibull distribution. The method is described in Chapter 3 and results in Chapter 4. Discussions of the data and the results are found in Chapter 5. The recommended correction factors for wind speed and direction and wave height, period and direction are found in Chapter 6.
