Figure 1.

Impact of dust storm on cloud microstructure over the eastern Mediterranean. The image was obtained by a National Oceanographic and Atmospheric Administration advanced very high-resolution radiometer on March 16, 1998, 11:21 GMT. The visible modulates the red, 3.7-μm reflectance (greater for clouds composed of smaller particles) for the green and temperature for the blue. Therefore, more red clouds contain larger particles, whereas more yellow clouds contain smaller particles. The blue background is the surface. Dust is evident by the obscuration of the sea surface in frames 1 and 4. Heavy blur due to dust is observed in frames 5 and 6. Analyses of clouds in the frames are given in Fig. 2.