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Fog Reference Libraries

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Surface Map Weather Feature
2012-07-23 11:15:04

The above map identifies the visibility throughout the United States. We as meteorologist use surface visibility charts to help identify where certain features are possibly at. If we look at the red circle near San Diego we can see that it says ¼ visibility meaning that they are experiencing Fog at their weather station, which can lead to many problems from traffic on the roads and also the...

The California Current
2012-07-17 13:37:35

The California current runs north to south along the West Coast of the United States. This current has huge impacts on the weather along the west coast. Along California this current is responsible for extensive Marine Fog layers every day during the summer, especially when the land is warmer than the waters along the coast. Also in the California area this current keeps the coastal cities...

Arctic Haze
2009-07-06 17:01:44

Arctic haze is a phenomenon that occurs in the atmosphere at high latitudes in the Arctic due to air pollution. What distinguishes Arctic haze from haze found elsewhere, is the ability of its chemical ingredients to endure in the atmosphere for a longer period of time compared to other pollutants. Due to limited snowfall, rain, or turbulent air to displace pollutants from the polar air in the...

Haze
2009-07-06 16:44:13

Haze is a type of atmospheric phenomenon where dust, smoke and dry particles in the air obscure the sky's clarity. Haze is created through various activities including farming, traffic pollution,and even wildfires. The World Meteorological Organization (WMO) categorizes the obscuration of the Earth's atmosphere by a list of different types of atmospheric phenomena. One of these is haze. The...

Mist
2009-07-06 16:36:49

Mist is a phenomenon that consists of small droplets of water suspended in air. Mist occurs as part of a natural weather event or from volcanic activity. Mist is most common in cold air above warm water. Mist also occurs when air is exhaled in cold temperatures or when steam is formed in a sauna. Aerosol cans can create artificial mist if the humidity levels are just right. The one...

Soft Rime
2009-07-06 16:09:35

Soft rime is a type of milky white ice that forms when water droplets in light freezing fog freeze to the outer surfaces of objects. This formation usually occurs with light winds or in calm conditions. The rime forms to the windward (side facing the wind) side of solid objects. Soft rime is similar in appearance to hoar frost, but is formed differently. Soft rime is formed when vapor first...

Hard Rime
2009-07-06 15:49:33

Hard rime is a type of white ice that forms when water droplets found in fog freeze to the outer surfaces of objects. Hard rime is most often found on trees atop mountains and high ridges in winter, when low clouds cause freezing fog. This fog freezes along the windward (sides facing the wind) side of trees, buildings, and any other solid objects. The air temperature needed for hard rime to...

Clear Ice
2009-07-04 15:43:10

Clear Ice refers to a solid precipitation that forms when air temperature is between 32 degrees and 27 degrees Fahrenheit and there is a presence of super-cooled, large drops of water (from freezing fog). A rapid build up and slow dispersing of latent heat of fusion favors conditions for the formation of the transparent ice. A similar phenomenon occurs when freezing rain or drizzle hit's a...

Stratus
2009-07-04 15:24:37

A Stratus cloud is a cloud belonging to a class distinguished by horizontal layering with a uniform base. This type of cloud is different from other clouds that are usually taller than they are wide (these are known as cumulus clouds). The term "˜stratus', In Latin, means layer or blanket. Stratus clouds are flat, featureless clouds of low altitude that can vary in color from dark gray to...

Word of the Day
grass-comber
  • A landsman who is making his first voyage at sea; a novice who enters naval service from rural life.
According to the OED, a grass-comber is also 'a sailor's term for one who has been a farm-labourer.'