biennial oscillation

两年振盪

Atmospheric Sciences (English-Chinese) dictionary. 2014.

Look at other dictionaries:

  • Quasi-biennial oscillation — The QBO (quasi biennial oscillation) is a quasi periodic oscillation of the equatorial zonal wind between easterlies and westerlies in the tropical stratosphere with a mean period of 28 to 29 months. The alternating wind regimes develop at the… …   Wikipedia

  • quasi-biennial oscillation — ▪ air current       layer of winds that encircle the Earth in the lower stratosphere, at altitudes from 20 to 40 kilometres (about 12 to 25 miles), between latitudes 15° N and 15° S. They blow at velocities of 25 to 50 metres per second (about 55 …   Universalium

  • quasi-biennial oscillation — (QBO) Alternation of easterly and westerly wind regimes in the equatorial stratosphere with an interval between successive corresponding maxima of from 24 to 30 months. A new regime starts above 30 km and propagates downward at about 1 km per… …   Dictionary of automotive terms

  • Oscillation — For other uses, see oscillator (disambiguation) and oscillation (mathematics). An undamped spring–mass system is an oscillatory system. Oscillation is the repetitive variation, typically in time, of some measure about a central value (often a… …   Wikipedia

  • Oscillation quasi-biennale — Diagramme temps versus hauteur du vent équatorial (u) en m/s entre 20 et 35 km d altitude de 1981 à 1991. Les valeurs positives montrent un vent d ouest. L’oscillation quasi biennale (OQB) est un changement oscillatoire de la direction des… …   Wikipédia en Français

  • 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

  • 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

  • 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

  • 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

  • Richard Lindzen — Richard S. Lindzen Born 8 February 1940 (1940 02 08) (age 71) Webster, Massachusetts Fields Atmospheric physics …   Wikipedia

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