JPEG File 1.01M

Figure 6.14
Saharan dust plume moving into the Mediterranean basin, August 8, 1998. The red arrow marks the same location and cloud mass on each image. The progression from oblique to vertical look angles shows different aspects of the aerosols. (A) Northeast-looking panorama shows the landmasses of Spain lower left (city of Almeria, left arrow) and North Africa lower right (city of Tlemcen, Algeria, right arrow). Dust obscures the Balearic Islands (Palma city on the island of Mallorca, P, and the island of Ibiza, I ). The Sahara Desert lies out of the picture right. (B) Closer view of cloud and dust mass in view (A) The cloud mass has several embedded convection cells (center right) and with apparently associated linear dust features at lower altitudes along its western margin (center, and left of red arrow). The island of Mallorca (P) is dimly visible in this more vertical view but the island of Menorca (M, 120 km east-northeast of Mallorca) remains obscured. (C) Detail of linear structure in the dust immediately beneath the edge of the largest mass of cloud [center of (B)] suggests the influence of near-surface air outflow generated by downdrafts in the storm cells. In this vertical view through less dust the island of Menorca (M) is partly visible. [NASA photographs taken August 8, 1997, Hasselblad camera, 100 mm lens, altitude 382 km: (A) NASA5-708-48, 17:29:07 GMT, center point 36.5N 1.5W, craft nadir 33.7N 6.0W; (B) NASA5-708-60, 17:30:54 GMT, center point 38N 3E, craft nadir 38.2N 0.2E; (C) NASA5-708-66, 17:31:37 GMT, center point 40N 4.5E, craft nadir 39.9N 2.9E.]