arctic oscillation

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• Arctic oscillation — The Arctic oscillation (AO) or Northern Annular Mode/Northern Hemisphere Annular Mode (NAM) is an index (which varies over time with no particular periodicity) of the dominant pattern of non seasonal sea level pressure variations north of 20N… …   Wikipedia

• Oscillation arctique — L’ oscillation arctique (OA) est une variation de la différence de pression atmosphérique, au niveau de la mer, entre 20 N et le Pôle d une année à l autre. Cette variation est reliée à l intensité et la position moyenne des dépressions et… …   Wikipédia en Français

• Oscillation nord-atlantique — L’oscillation nord atlantique (ONA, plus connue sous le sigle anglais NAO) désigne un phénomène touchant le système climatique du nord de l Océan Atlantique. L ONA décrit les variations du régime océan atmosphère sur la région et se mesure… …   Wikipédia en Français

• North Atlantic oscillation — For the rock band, see North Atlantic Oscillation (band). The North Atlantic oscillation (NAO) is a climatic phenomenon in the North Atlantic Ocean of fluctuations in the difference of atmospheric pressure at sea level between the Icelandic low… …   Wikipedia

• El Niño-Southern Oscillation — El Niño redirects here. For other uses, see El Niño (disambiguation). ENSO redirects here. For other uses, see Enso (disambiguation). The 1997 El Niño observed by TOPEX/Poseidon. The white areas off the tropical coasts of South and North America… …   Wikipedia

• Climate oscillation — A climate oscillation is any oscillation within global or regional climate. These fluctuations in atmospheric temperature, sea surface temperature, precipitation or other parameters can be quasi periodic, often occurring on inter annual, multi… …   Wikipedia

• North Pacific Oscillation — The NPO pattern. The North Pacific Oscillation (NPO) is a teleconnection pattern first described by Walker and Bliss[1] and characterized by a north south seesaw in sea level pressure over the North Pacific. Rogers, using surface atmospheric… …   Wikipedia

• Climate of the Arctic — The climate of the Arctic is characterized by long, cold winters and short, cool summers. There is a large amount of variability in climate across the Arctic, but all regions experience extremes of solar radiation in both summer and winter. Some… …   Wikipedia

• Climate change in the Arctic — Very substantial decrease in Arctic Sea ice in 2007 from 2005 and also from 1979–2000 average …   Wikipedia

• Antarctic oscillation — The Antarctic oscillation (AAO, to distinguish it from the Arctic oscillation or AO) is a low frequency mode of atmospheric variability of the southern hemisphere. It is also known as the Southern Annular Mode (SAM) or Southern Hemisphere Annular …   Wikipedia

• Piora Oscillation — The Piora Oscillation was an abrupt cold and wet period in the climate history of the Holocene Epoch; it is generally dated to the period of c. 3200 to 2900 BCE. [ [http://www.news about space.org/story/2409.html Space and Earth Science News… …   Wikipedia