Results 11 to 20 of about 9,534 (213)

Explaining the period fluctuation of the quasi-biennial oscillation [PDF]

Atmospheric Chemistry and Physics
The tropical stratosphere is characterized by a periodic oscillation of wind direction between westerly and easterly, known as the quasi-biennial oscillation (QBO), which modulates middle atmospheric circulations and surface climate on interannual ...
Y.-H. Kim
doaj   +4 more sources

Extratropical signature of the quasi-biennial oscillation [PDF]

Journal of Geophysical Research: Atmospheres, 2005
Using the assimilated data from the National Centers for Environmental Prediction (NCEP) reanalysis, we show that the extratropical signature of the tropical quasi-biennial oscillation (QBO) is seen mostly in the North Annular Mode (NAM) of atmospheric ...
Feynman, Joan, Ruzmaikin, Alexander
core   +4 more sources

Quasi-biennial oscillation of the ionospheric wind dynamo [PDF]

Journal of Geophysical Research: Space Physics, 2017
The interannual variation of the ionospheric solar quiet (Sq) current system is examined. A dense magnetometer network over Japan enables the accurate determination of the central position of the northern Sq current loop or the Sq current focus, during ...
Kosch, Michael Jurgen, Liu, Huixin, Miyoshi, Yasunobu, Mlynczak, Martin, Sun, Yang-Yi, Yamazaki, Yosuke   +5 more
core   +5 more sources

Quasi-biennial oscillation: laboratory experiments

Comptes Rendus. Physique
The quasi-biennial oscillation (QBO) is an oscillation of the wind in the equatorial stratosphere. This wind is a mean flow induced by atmospheric waves, including internal gravity waves, which explain that the period (28 month) is not linked to any ...
Semin, Benoît, Pétrelis, François
doaj   +3 more sources

Role of the quasi-biennial oscillation in alleviating biases in the semi-annual oscillation [PDF]

Weather and Climate Dynamics
Model representations of the stratospheric semi-annual oscillation (SAO) show a common easterly bias, with a weaker westerly phase and stronger easterly phase compared to observations.
A. M. Jaison, A. M. Jaison, L. J. Gray, L. J. Gray, S. M. Osprey, S. M. Osprey, J. R. Knight, M. B. Andrews   +7 more
doaj   +5 more sources

Structure and Dynamics of the Quasi-Biennial Oscillation in MERRA-2. [PDF]

J Clim, 2016
Abstract The structure, dynamics, and ozone signal of the quasi-biennial oscillation (QBO) produced by the 35-yr NASA Modern-Era Retrospective Analysis for Research and Applications, version 2 (MERRA-2), are examined based on monthly mean output. Along with the analysis of the QBO in assimilation winds and ozone, the QBO forcings created
Coy L, Wargan K, Molod AM, McCarty WR, Pawson S.   +4 more
europepmc   +3 more sources

Dynamics of the Disrupted 2015-16 Quasi-Biennial Oscillation. [PDF]

J Clim, 2017
AbstractA significant disruption of the quasi-biennial oscillation (QBO) occurred during the Northern Hemisphere (NH) winter of 2015/16. Since the QBO is the major wind variability source in the tropical lower stratosphere and influences the rate of ascent of air entering the stratosphere, understanding the cause of this singular disruption may provide
Coy L, Newman PA, Pawson S, Lait LR.
europepmc   +3 more sources

An unexpected disruption of the atmospheric quasi-biennial oscillation [PDF]

Science, 2016
One of the most repeatable phenomena seen in the atmosphere, the quasi-biennial oscillation (QBO) between prevailing eastward and westward wind jets in the equatorial stratosphere (approximately 16 to 50 kilometers altitude), was unexpectedly disrupted in February 2016.
Osprey, Scott M., Butchart, Neal, Knight, Jeff R., Scaife, Adam A., Hamilton, Kevin, Anstey, James A., Schenzinger, Verena, Zhang, Chunxi   +7 more
openaire   +3 more sources

High-frequency cyclicity in the Mediterranean Messinian evaporites: evidence for solar-lunar climate forcing [PDF]

, 2012
The deposition of varved sedimentary sequences is usually controlled by climate conditions. The study of two Late Miocene evaporite successions (one halite and the other gypsum) consisting of annual varves has been carried out to reconstruct the ...
Gennari, Rocco, Lugli, Stefano, Manzi, Vinicio, Roveri, Marco, Scafetta, Nicola, Schreiber, Charlotte B.   +5 more
core   +2 more sources

The SPARC Quasi‐Biennial Oscillation initiative [PDF]

Quarterly Journal of the Royal Meteorological Society, 2020
AbstractIntroduction and background to the Stratosphere–troposphere Processes And their Role in Climate (SPARC) project, the QBOi, and the papers contained in this Special Section.
James A. Anstey, Neal Butchart, Kevin Hamilton, Scott M. Osprey   +3 more
openaire   +2 more sources