23. Figure below shows the surface wind velocity as a function of the natural log ofthe roughness length (Z). Plot a straight line and determine the roughness length(Zo) of the

terrain if measurement points are: V1 = 2.5 m/s and V2 = 3.6 m/s.Steps: Plot V1 and V2 and determine LN(Z1) and LN(Z2) and use equation 15from lecture notes to get Zo. (5%)