FACTOID # 14: North Carolina has a larger Native American population than North Dakota, South Dakota and Montana combined.
 
 Home   Encyclopedia   Statistics   States A-Z   Flags   Maps   FAQ   About 
   
 
WHAT'S NEW
 

SEARCH ALL

FACTS & STATISTICS    Advanced view

Search encyclopedia, statistics and forums:

 

 

(* = Graphable)

 

 


Encyclopedia > Zonda wind

Zonda wind (in Spanish, viento zonda) is a regional term for the föhn wind that often occurs on the eastern slope of the Andes, in Argentina. The Zonda is a dry wind (often carrying dust) which comes from the polar maritime air, warmed by descent from the crest, which is some 6,000 m (18,000 ft) above sea level. It may exceed a velocity of 40 km/h (25 mph). A föhn wind or foehn wind occurs when a deep layer of prevailing wind is forced over a mountain range (Orographic lifting). ... This article or section does not adequately cite its references or sources. ... Planes view of the Andes, Peru. ... Amundsen-Scott South Pole Station. ... This article does not cite any references or sources. ... The metre (or meter, see spelling differences) is a measure of length. ... A foot (plural: feet or foot;[1] symbol or abbreviation: ft or, sometimes, ′ – a prime) is a unit of length, in a number of different systems, including English units, Imperial units, and United States customary units. ... For considerations of sea level change, in particular rise associated with possible global warming, see sea level rise. ... Kilometre per hour (American spelling: kilometer per hour) is a unit of both speed (scalar) and velocity (vector). ... Miles per hour is a unit of speed, expressing the number of international miles covered per hour. ...


While this type of föhn wind may occur over most central parts of western Argentina, its effects are more impressive in La Rioja, San Juan, and northern Mendoza provinces, because the mountain barrier (the Andes) is higher, while to the north the Puna plateau dissipates these winds. La Rioja is a one of the provinces of Argentina and is, located in the west of the country. ... San Juan is a province of Argentina, located in the westen part of the country. ... Mendoza is one of the 23 provinces of Argentina, located in the western central part of the country in the Cuyo region. ... Puno, Peru, is one of larger cities of the Altiplano. ...


The Zonda wind is basically produced by the northeastward movement of polar fronts, and although is hot and dry at the low-lands, it is the main mechanism for snow precipitation at the high altitude chains, where it looks as viento blanco, reaching speeds sometimes over 200 km/h. Thus, instead of being a snow-eater, this wind is particularly important for this arid region, as it is connected to the buildup of the winter snow cover and accumulation over the scarce local glaciers. Animation of snowcover changing with the seasons Trees covered with snow Snow covering a leaf. ... An arid environment has an extremely low yearly precipitation, receiving much less rain or snowfall annually than would satisfy the climatological demand for evaporation and transpiration. ... A glacier is a large, persistent body of ice, formed largely of compacted layers of snow, that slowly deforms and flows in response to gravity. ...


According to studies (conducted over the period 1967–1976), the Zonda wind most commonly starts during the afternoon (between 12 and 6 PM), and tends to last between 1 and 12 hours, though it may present itself intermitently for as long as 2 or 3 days. It is countered usually by the entrance of cold air masses moving northwestward (viento sur). In 90% of the cases, the phenomenon takes place between May and November.


Alternative usage

The term zonda also describes a hot, humid north wind in the Pampas, in advance of a depression moving eastwards, and preceding the pampero. This wind is also called the sondo. The pampas (from Quechua for plain) are the fertile lowlands that extend across c. ... The pampero is a west or southwest wind in Southern Argentina. ...


References

  • (Spanish) MeteoBlogs — Viento Zonda. National Meteorological Service, Air Regions Command, Argentine Air Force.
  • "The land where blows el Zonda". Article.

  Results from FactBites:
 
Wind (2700 words)
Winds can be classified either by their scale, the kinds of forces which cause them (according to the atmospheric equations of motion), or the geographic regions in which they exist.
The opposite of a katabatic wind is an anabatic wind, or an upward-moving wind.
Zonda wind (on the eastern slope of the Andes in Argentina)
Wind - Facts, Information, and Encyclopedia Reference article (2435 words)
Wind is the quasi-horizontal movement of air (as opposed to an air current) caused by uneven heating of the Earth's surface.
At the smallest scale are the winds which blow on a scale of only tens to hundreds of metres and are essentially unpredictable, such as dust devils and microbursts.
Seasonal winds are winds that only exist during specific seasons, such as the Indian monsoon.
  More results at FactBites »

 
 

COMMENTARY     


Share your thoughts, questions and commentary here
Your name
Your comments

Want to know more?
Search encyclopedia, statistics and forums:

 


Press Releases |  Feeds | Contact
The Wikipedia article included on this page is licensed under the GFDL.
Images may be subject to relevant owners' copyright.
All other elements are (c) copyright NationMaster.com 2003-5. All Rights Reserved.
Usage implies agreement with terms, 1022, m