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Sea of fog riding the coastal marine layer through the Golden Gate Bridge at San Francisco, California Afternoon smog within a coastal marine layer in West Los Angeles. A marine layer is an air mass that develops over the surface of a large body of water, such as an ocean or large lake, in the presence of a temperature inversion. The inversion ...
The water vapor produces the sea smoke fog and is usually misty and smoke-like. [30] Garúa fog near the coast of Chile and Peru [31] occurs when typical fog produced by the sea travels inland but suddenly meets an area of hot air. This causes the water particles of fog to shrink by evaporation, producing a "transparent mist".
The Andes mountain range which runs along the Pacific coast of South America divides Chile and Peru into inland and coastal regions, and its proximity to the sea coupled with the steep change in elevation (and thus surface temperature) allow for fog to form along the Pacific coast and supply moisture to the otherwise arid desert.
The Jade Dragon Snow Mountains contain the glacier nearest of the Equator in the Northern Hemisphere. The landmarks 4,506 m and 4,680 m at the end of the glacier can be reached through the cable car from Ganhaizi (Tibetan for dry lake, a grassland with conifers at 3,400 m). The mountain desert begins around 4,000 m.
A Catalina eddy is rarely prolonged. As the heat over the deserts causes air to rise, the resulting pressure gradient and increase in the normal onshore winds causes the vortex to dissipate. The result is the common local weather forecast calling for "late night and early morning low clouds and fog, followed by afternoon sunshine and sea breezes."
As AccuWeather meteorologists warned about days in advance, a massive area of fog has developed and is playing havoc with ground and air travel in much of the central and eastern United States.
Louisiana State Police said the fog caused a crash of more than 158 vehicles on a bridge over Lake Pontchartrain, and warned the death toll could climb as emergency services comb through the wreckage.
In 2010 an anonymous person began a Twitter account for the San Francisco fog, inspired by the fake BP public relations account that appeared after the oil spill in the Gulf of Mexico that year. It was named "Karl the Fog" after the misunderstood giant in the 2003 film Big Fish [21] [22] [23] and the name has become widely used since.