1 Air currents of differing velocities or direction create friction or 'shear'
between them
Localised air flow from wind coming up off the steep coastlline of St Helena
2 Wind shear has a
significant effect during take-off and landing of aircraft due to its effects on the control of the aircraft
4 km
4 miles
Jamestown
Airport
St Helena
Africa
South
America
Atlantic
Ocean
St Helena
Runway
Wind at higher levels
4 km
4 miles
Jamestown
Airport
St Helena
Africa
South
America
Atlantic
Ocean
St Helena
Runway
Wind at higher levels
2 Wind shear has a significant
effect during take-off and
landing of aircraft due to
its effects on the control
of the aircraft
1 Air currents of differing
velocities or direction
create friction or 'shear'
between them
Localised air flow from
wind coming up off
the steep coastlline
of St Helena