Quantcast

Weather Reference Libraries

Page 15 of about 157 Articles
Snowbelt
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...

Thermal Column
2009-07-18 15:14:24

A thermal column is a column of rising air in lower altitudes of the atmosphere. Thermal columns are created by uneven heating patterns of the Earth's surface from solar radiation. The sun warms the ground, and the air directly above the ground begins to warm. As the warm air expands, it becomes less dense than the air around it and rises. As the warmer air rises, it cools due to its expansion...

Wind shear
2009-07-18 14:50:11

Wind Shear (windshear, wind gradient) is described as difference in wind speed and direction over a short distance in the atmosphere. Wind shear is broken down into vertical and horizontal components. Horizontal wind shear is seen across weather fronts and near coastal regions. A vertical wind shear is found near the surface, or at upper levels of the atmosphere. Wind shear is a meteorological...

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...

White Frost
2009-07-06 16:20:02

White frost is a type of solid ice that forms directly from water vapor found in the air. White frost forms when the humidity is above 90% and the temperature is below 18 degrees Fahrenheit. White frost grows against the wind, since the facing winds have higher humidity than leeward air. The wind must be light or the delicate icy structures become broken. The structures have big, interlocking,...

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...

Rain
2009-07-04 16:31:47

Rain is a type of liquid precipitation. It is defined as condensation of atmospheric water vapor that forms into drops that become heavy enough to fall, and often making it to the surface. Rain is the primary source of most of the fresh water in the world. Rain provides suitable conditions for diverse ecosystems, water for power sources and for crop irrigation. Not all rain reaches the surface....

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...

Altocumulus
2009-07-04 15:40:07

Altocumulus clouds belong to a class distinguished by globular masses or rolls in layers or patches. These clouds are larger and darker than cirrocumulus and smaller than stratocumulus. Like other cumulus clouds, altocumulus indicates a vertical and upward transference of atmospheric conditions. Altocumulus are often seen preceding a cold front, and their presence on a warm, humid, summer...

Word of the Day
edulcoration
  • The act of sweetening by admixture of some saccharine substance.
The word 'edulcoration' comes from a Latin word meaning 'making sweet'.