Meteorology Reference Libraries

Page 7 of about 73 Articles
Heat Lightning
2009-07-21 16:27:18

Heat Lightning is actually faint flashes of lightning reflecting outward from distant thunderstorms. These flashes usually do not produce thunder as the storm is sometimes too far away to be heard. The term heat lightning got its name because it often occurs on hot summer nights and does not produce audible thunder. One reason heat lightning can be seen so far away is due to the reflection of...

2009-07-21 15:56:27

The snowbelt is a North American region that lies downwind of the Great lakes, where heavy snowfall is common on mostly the eastern and southern shores of the Great Lakes. Lake-effect snow is caused by cold air picking up moisture while crossing the lake and then releasing it as snow when the air cools over land. Throughout much of the winter, lakes produce lake-effect snow and continuously...

Snow Gauge
2009-07-06 18:17:29

A snow gauge is an instrument used in meteorology to gather and measure the amount of solid precipitation (as opposed to liquid precipitation that is measured by a rain gauge) over a period of time. A snow gauge has two parts: the copper catchment container and the funnel shaped gauge itself. The actual gauge is mounted on a pipe that is about 4 ft. 11 in. high. The gauge itself is about 20.25...

Raining Animals
2009-07-06 17:32:34

Raining animals is a rare meteorological phenomenon, although there have been occurrences reported from many countries throughout history. It is believed that this phenomenon occurs at least occasionally when strong winds that are traveling over water pick up live debris (fish, frogs, etc.) and carry them up to several miles depositing them over land. Though this is one theory, it has never...

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...

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...

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...

2009-07-04 15:37:27

Nimbostratus clouds are distinguished by a formless cloud layer that is predominantly dark gray in color. "Nimbo" comes from the Latin word "nimbus", meaning rain. It is a cloud that produces rain, and develops a cloud base between the surface and 10,000 feet. These clouds normally have a thickness of 6,500 to 10,000 feet, but can range from 3,500 to 15,000 feet. In rare cases, nimbostratus can...

2009-07-04 15:02:09

Cirrocumulus clouds are high-altitude clouds that mainly occur between 16,000 and 40,000 feet. Like most cumulus clouds, these clouds indicate a vertical and upward transference of atmospheric conditions. Unlike other cirrus clouds, cirrocumulus composition includes super-cooled liquid water droplets. Ice crystals are also present, and usually, the ice crystals cause the droplets in the cloud...

Earths Atmosphere
2004-10-19 04:45:44

Earth's Atmosphere -- Earth's atmosphere consists of nitrogen (78.1%) and oxygen (20.9%), with small amounts of argon (0.9%), carbon dioxide (variable, but around 0.035%), water vapor, and other gases. The atmosphere protects life on Earth by absorbing ultraviolet solar radiation and reducing temperature extremes between day and night. 75% of the atmosphere exists within 11km of the...

Word of the Day
  • A goblin in English folklore, often appearing in the shape of a large dog and believed to portend imminent death or misfortune.
  • A ghost, wraith, hobgoblin, elf, or spirit.
The origin of 'barghest' is not known, but it may be from perhaps burh-ghest, town-ghost, or German Berg-geist (mountain spirit) or Bär-geist (bear-spirit).