Pat Shingleton: "The Brockenspectre"
Episodes of fog for our Baton Rouge and the surrounding area are more numerous in the months of December through April. Fog is classified according to the varied processes involved in their formation such as radiation fog, advection fog and evaporation fog. Other fog names fall under the banner of these classifications such as upslope fog, sea fog and fog banks. Coastal fog is more numerous in the Hartz Mountains of Germany where visitors can experience Brockenspectre or the Spectre of the Brocken. Tourists become hikers and position themselves on this mountain range with their backs to the sun and blankets of fog below them and surrounding them. Their shadows penetrate the foggy mist for incredible distances below. The concentric rings of fogbows surround the upper parts of the tourists' shadows, creating an unusual halo. Fogbows form when sunlight bounces off tiny water droplets in the fog. As the sunlight begins to burn off and dissipates the heavy fog, the cloudbow or fogbow is enhanced. Patchy fog or light fog has a visibility of more than 1,000 feet with no ceiling limitations. Dense fog is when the visibility is less than 1,000 feet.
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