A rather unusual dust storm was observed over the south-western part of Iraq on 3 May.
by Jochen Kerkmann (EUMETSAT)
The dust storm was caused by strong post-frontal north-westerly winds (Shamal), which blew large amounts of dust towards the Arabian Gulf.
The frontal cloud band itself, with its thick ice clouds, can be seen lying over the western part of Iran. Over south-western Iraq, a swirl which may well be the result of a thermal heat low, originally forming in northern Saudi Arabia, is clearly visible and persists for many hours as it slowly drifts eastwards.
In the afternoon, the dust front reached Bahrein Island and Qatar. It can also be seen from the high-resolution visible (HRV) image (see link below) that as the sun reaches lower elevations there is a distinct wave pattern visible at the top of the dust layer.
During the following night the dust storm could still be tracked using MSG channels, in particular using combinations of the IR8.7, IR10.8 and IR12.0 channels.
Channel 01 (VIS0.6)
Full Resolution (370 KB)
Channel 09 (IR10.8)
Full Resolution (342 KB)
Animation 07:15–14:30 UTC (MP4, 3 MB)
Large dust storm over the Middle East (23–24 November 2004)
Large dust storms over Sudan, Lybia and the Middle East (13 May 2004)
Dust storm over the Middle East (22–23 January 2004)
Channel 12 (HRV) 12:30 UTC (GIF, 363 KB)
Animation of Channel 12 (HRV) 07:15–13:30 UTC (MP4, 2 MB)
RGB Composite NIR1.6, VIS0.8, VIS0.6
Full Resolution (499 KB)
IR12.0–IR10.8, IR10.8–IR8.7, IR10.8
Full Resolution (741 KB)
Animation 07:15–14:30 UTC (MP4, 4 MB)
Animation 07:30–23:45 UTC (AVI, 2 MB)
Difference Image IR10.8–IR8.7
Range: -5 K (black) to +10 K (white)
Full Resolution (364 KB)
Difference Image IR10.8–IR12.0
Range: -2 K (black) to +4 K (white)
Full Resolution (467 KB)
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