I was there in 2008 and it was apparently one of the worst years in memory for dust. Even the Iraqis were surprised. We had weeks and weeks of dust with visibility pulsing between 1-5mi. Craziest days were when the morning inversion kept the lowest 1mi or so clear, and there was a distinct dust “overcast” aloft. Then the inversion would break and the dust would slowly settle to the surface. Took us a few times to figure that one out.