It is merely a theoretical question. The very fact wind is displayed on ND and not on PFD means on take off wind display has no meaning. At take off surface wind given by the tower is enough to start with and any change PF will notice by changing rudder requirement. Pilots monitor speed trend arrow which shows the acceleration. Normally the arrow head disappears on top. If it reappears and shortens or fluctuates it is a sign of wind shear and abort should be considered.
Last edited by vilas; 9th Sep 2016 at 08:31.