hi,
i was landing a 330 in dxb a couple of months ago and the taf reported blowing dust. the only thing we did was to make it a flap 3 landing. however we saw the approach lights only at around 500ft and it was quite windy and gusty. the turbulence on the approach was below 1000ft.
as per the bus's books theres nothing abt sand storms and procedures.
i guess you can select continuos ignition if the turbulence is severe ( which is mentioned in the manuals)
cheers