Wind vector over sea surface (horizontal)

The wind vector represents the motion of the airmass over the ground. It is described by wind speed and the inverse of wind direction. Conventionally measured at 10 m height. For expected performances and in case the measurement is made at a different height or in case it is corrected to 10m, indicate in the comments the exact height of the instrument as well as whether correction to 10 m has been applied. Accuracy is the modulus of the vector difference between measured and true vectors. [Unit of measurement - m/s]