El Niño Oscillation del Sud

El Niño Oscillation del Sud
	instantia de: meteorological phenomenon[*]
	subclasse de: teleconnection[*]
	;
	Commons: El Niño/La Niña–Southern Oscillation

El Niño Oscillation del Sud (o ENSO), refere al effectos de un banda de temperaturas de superficie marin que es anomalemente calide o frigide pro longe periodos de tempore que occure proxime le costa occidental de America del Sud. ENSO causa cambiamentos climatic trans le tropicos e subtropicos. Le "Oscillation del Sud" refere al variationes in le temperatura del superficie del tropical Oceano Pacific oriental, con calefacer sapite como El Niño e frigidar sapite como La Niña, e in pression superficial del aer in le tropical Oceano Pacific occidental.

Le due variationes es accopulate: le phase calide oceanic , El Niño, accompania alte pression superficial del aer in le Pacific occidental, ma le phase frigide, La Niña, accompania basse pression in le Pacific occidental.^[1]^[2]

Le due phases ha connexion con le circulation Walker, discoperiva per Gilbert Walker al comenciamento del seculo 20. Le circulation Walker es causate per le fortia de gradiente pressional de un systema de pression alte super le Oceano Pacific oriental, e un systema de pression basse super Indonesia. Quando le circulation Walker debilita o reveni, un El Niño occure, causar le superficie oceanic de esser plus calide que medie, como altefluer de aqua frigide occure minus o nihil. Un specialmente forte circulation Walker causa un La Niña, ducer a plus frigide temperaturas oceanic a causa de crescite altefluer.

Mechanismos que causa le oscillation es ancora studiate. Le extremos del oscillationes de iste patrono climatic causa conditiones temporal extreme (tal como inundationes e siccates) in multe regiones del mundo. Paises disveloppante que es dependente sur agricultura e pisca, particularmente los confinante con le Oceano Pacific, es le plus affectate.

Vide etiam

Climate

Referentias

↑ Climate Prediction Center (2005-12-19). Frequently Asked Questions about El Niño and La Niña. National Centers for Environmental Prediction. Recuperate le 2009-07-17.
↑ Trenberth, K.E., P.D. Jones, P. Ambenje, R. Bojariu , D. Easterling, A. Klein Tank, D. Parker, F. Rahimzadeh, J.A. Renwick, M. Rusticucci, B. Soden and P. Zhai. "Observations: Surface and Atmospheric Climate Change", Climate Change 2007: The Physical Science Basis. Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change. Cambridge, UK: Cambridge University Press, 235–336. Archived 2017-09-24 at the Wayback Machine

Nota

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Nota

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[CPC_ENSO-1] Climate Prediction Center (2005-12-19). Frequently Asked Questions about El Niño and La Niña. National Centers for Environmental Prediction. Recuperate le 2009-07-17.

[2] Trenberth, K.E., P.D. Jones, P. Ambenje, R. Bojariu , D. Easterling, A. Klein Tank, D. Parker, F. Rahimzadeh, J.A. Renwick, M. Rusticucci, B. Soden and P. Zhai. "Observations: Surface and Atmospheric Climate Change", Climate Change 2007: The Physical Science Basis. Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change. Cambridge, UK: Cambridge University Press, 235–336. Archived 2017-09-24 at the Wayback Machine

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