Wind speed

As described in section 5.3, to reduce the bias in wind speed due to the WMO Code 1100, a wind speed correction of the form shown in eq. (6),

is used to correct estimated winds, where is the WMO Code 1100 speed of the estimated wind and is the corrected wind speed. It is important to realize that this new Beaufort equivalent scale produces wind speeds valid at a 20 meter reference level. Whenever 10 meter wind speed is required, the proper conversion from 20 meters is performed using stability dependent surface layer theory (Appendix A).