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Fog is a visible aerosol consisting of tiny water droplets or ice crystals suspended in the air at or near the Earth's surface. [1] [2] Fog can be considered a type of low-lying cloud usually resembling stratus and is heavily influenced by nearby bodies of water, topography, and wind conditions.
The decline in fog is generally attributed to climate change, and is concerning for the local ecology, for example the redwood trees. [12] Climate change contributes to the warming of our oceans, directly resulting in less fog as ocean water is not cold enough to mix with hot, moist air currents to create fog. [13]
What causes fog? Fog is essentially "a cloud at the ground," Boxell said. For fog to form, the air needs to be saturated, meaning it's holding the maximum amount of moisture possible, so ...
Conditions associated with a marine layer, a stable atmosphere common on the west side of continents near cold water currents, leads to overnight and morning fog. [11] Undular bores can form when a low level boundary such as a cold front or outflow boundary approaches a layer of cold, stable air.
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.
By Saturday morning, the fog could be so dense that visibility drops to below 100 metres in some places, the Met Office said. Warnings over freezing fog as cold snap continues Skip to main content
Icy fog is expected to stick around for another day or so.
Another way fog forms in deserts occurs when a desert is close to an ocean which has a cold current. When air is heated over desert land and blows towards the cool water in the ocean, it condenses and fog is formed. The cool fog is then blown inland by the ocean breeze. Fog is mainly formed in the early morning or after sunset. [5]
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