This SeaWiFS view of Alaska (upper right) and the Bering Sea (center), collected on April 13, 2002, reveals an unmistakable wave of dust (brownish pixels) traveling southward along Alaska’s western coastline and over the Aleutian Island chain. The dust, probably from East Asia, is easily distinguished from the bright white clouds (lower left) and the snow and ice covered surfaces on and around Alaska.

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