I’m using FASTv7 through Simulink for a simulation with a full-field wind file. I am looking at the uWind output from FAST and the grid point that correspond to the hub-height point in the human readable form of the FF wind file (.u). In my case there is a time-shift between these two signals that is greater than 1.5 seconds. This is a behavior I haven’t seen with .hh wind files. Is there a way of calculating this time-shift without running a simulation? Also, is there a simple explanation of this behavior?