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Titolo:
The quasi-biennial oscillation
Autore:
Baldwin, MP; Gray, LJ; Dunkerton, TJ; Hamilton, K; Haynes, PH; Randel, WJ; Holton, JR; Alexander, MJ; Hirota, I; Horinouchi, T; Jones, DBA; Kinnersley, JS; Marquardt, C; Sato, K; Takahashi, M;
Indirizzi:
NW Res Associates Inc, Bellevue, WA 98007 USA NW Res Associates Inc Bellevue WA USA 98007 s Inc, Bellevue, WA 98007 USA Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England Rutherford Appleton Lab Didcot Oxon England OX11 0QX 1 0QX, Oxon, England Univ Hawaii, SOEST, Int Pacific Res Ctr, Honolulu, HI 96822 USA Univ Hawaii Honolulu HI USA 96822 Pacific Res Ctr, Honolulu, HI 96822 USA Univ Hawaii, Dept Meteorol, Honolulu, HI 96822 USA Univ Hawaii Honolulu HI USA 96822 , Dept Meteorol, Honolulu, HI 96822 USA Univ Cambridge, Dept Appl Math & Theoret Phys, Ctr Atmospher Sci, Cambridge CB3 9EW, England Univ Cambridge Cambridge England CB3 9EW Sci, Cambridge CB3 9EW, England Natl Ctr Atmospher Res, Div Atmospher Chem, Boulder, CO 80307 USA Natl CtrAtmospher Res Boulder CO USA 80307 r Chem, Boulder, CO 80307 USA Univ Washington, Dept Atmospher Sci, Seattle, WA 98195 USA Univ Washington Seattle WA USA 98195 Atmospher Sci, Seattle, WA 98195 USA NW Res Associates Inc, Colorado Res Associates Div, Boulder, CO 80301 USA NW Res Associates Inc Boulder CO USA 80301 tes Div, Boulder, CO 80301 USA Kyoto Univ, Ctr Radio Atmospher Sci, Uji, Kyoto 6110011, Japan Kyoto UnivUji Kyoto Japan 6110011 mospher Sci, Uji, Kyoto 6110011, Japan Kyoto Univ, Dept Geophys, Kyoto 6068502, Japan Kyoto Univ Kyoto Japan 6068502 Univ, Dept Geophys, Kyoto 6068502, Japan Harvard Univ, Div Engn & Appl Sci, Cambridge, MA 02138 USA Harvard Univ Cambridge MA USA 02138 n & Appl Sci, Cambridge, MA 02138 USA Qwest, Seattle, WA USA Qwest Seattle WA USAQwest, Seattle, WA USA Geoforschungszentrum Potsdam, D-14473 Potsdam, Germany Geoforschungszentrum Potsdam Potsdam Germany D-14473 73 Potsdam, Germany Natl Inst Polar Res, Arctic Environm Res Ctr, Tokyo 1738515, Japan Natl Inst Polar Res Tokyo Japan 1738515 nm Res Ctr, Tokyo 1738515, Japan Univ Tokyo, Ctr Climate Syst Res, Meguro Ku, Tokyo 1538904, Japan Univ Tokyo Tokyo Japan 1538904 Syst Res, Meguro Ku, Tokyo 1538904, Japan
Titolo Testata:
REVIEWS OF GEOPHYSICS
fascicolo: 2, volume: 39, anno: 2001,
pagine: 179 - 229
SICI:
8755-1209(200105)39:2<179:TQO>2.0.ZU;2-2
Fonte:
ISI
Lingua:
ENG
Soggetto:
GENERAL-CIRCULATION MODEL; EQUATORIAL LOWER STRATOSPHERE; TROPICAL LOWER STRATOSPHERE; NORTHERN-HEMISPHERE WINTER; QBO-LIKE OSCILLATION; HALOGEN OCCULTATION EXPERIMENT; SEASONAL HURRICANE FREQUENCY; SEA-SURFACE TEMPERATURE; TWO-DIMENSIONAL MODEL; GRAVITY-WAVE ACTIVITY;
Tipo documento:
Review
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
262
Recensione:
Indirizzi per estratti:
Indirizzo: Baldwin, MP NW Res Associates Inc, 14508 NE 20th St, Bellevue, WA 98007 USA NW Res Associates Inc 14508 NE 20th St Bellevue WA USA 98007 A
Citazione:
M.P. Baldwin et al., "The quasi-biennial oscillation", REV GEOPHYS, 39(2), 2001, pp. 179-229

Abstract

The quasi-biennial oscillation (QBO) dominates the variability of the equatorial stratosphere (similar to 16-50 km) and is easily seen as downward propagating easterly and westerly wind regimes, with a variable period averaging approximately 28 months. From a fluid dynamical perspective, the QBO isa fascinating example of a coherent, oscillating mean flow that is driven by propagating waves with periods unrelated to that of the resulting oscillation, Although the QBO is a tropical phenomenon, it affects the stratospheric flow from pole to pole by modulating the effects of extratropical waves. Indeed, study of the QBO is inseparable from the study of atmospheric wave motions that drive it and are modulated by it. The QBO affects variability in the mesosphere near 85 km by selectively filtering waves that propagate upward through the equatorial stratosphere, and may also affect the strength of Atlantic hurricanes. The effects of the QBO are not confined to atmospheric dynamics. Chemical constituents, such as ozone, water vapor, and methane, are affected by circulation changes induced by the QBO. There are also substantial QBO signals in many of the shorter-lived chemical constituents. Through modulation of extratropical wave propagation, the QBO has an effect on the breakdown of the wintertime stratospheric polar vortices and the severity of high-latitude ozone depletion. The polar vortex in the stratosphere affects surface weather patterns, providing a mechanism for the QBO to have an effect at the Earth's surface. As more data sources (e.g., wind and temperature measurements from both ground-based systems and satellites)become available, the effects of the QBO can be more precisely assessed. This review covers the current state of knowledge of the tropical QBO, its extratropical dynamical effects, chemical constituent transport, and effectsof the QBO in the troposphere (similar to0-16 km) and mesosphere (similar to 50-100 km). It is intended to provide a broad overview of the QBO and its effects to researchers outside the held, as well as a source of information and references for specialists. The history of research on the QBO is discussed only briefly, and the reader is referred to several historical review papers. The basic theory of the QBO is summarized, and tutorial references are provided.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/06/20 alle ore 02:30:20