Results 41 to 50 of about 9,396 (179)

The Impact of Non‐Orographic Gravity Waves on Transport and Mixing: Effects of Oblique Propagation and Coupling to Turbulence

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 6, 28 March 2026.
Abstract Gravity waves (GWs) are a fundamental driver of circulation, tracer transport, and mixing in the middle and upper atmosphere, but their treatment in global circulation models remains incomplete. In particular, standard parameterizations typically restrict propagation to the vertical and treat GW–turbulence interactions in only a rudimentary ...
T. Banerjee, Y. H. Kim, G. S. Voelker, S. Borchert, A. Kosareva, D. Kunkel, G. T. Masur, Z. Prochazkova, J. Schmidli, U. Achatz   +9 more
wiley   +1 more source

Response of trace gases to the disrupted 2015–2016 quasi-biennial oscillation [PDF]

Atmospheric Chemistry and Physics, 2017
The quasi-biennial oscillation (QBO) is a quasiperiodic alternation between easterly and westerly zonal winds in the tropical stratosphere, propagating downward from the middle stratosphere to the tropopause with a period that varies from 24 to 32 ...
O. V. Tweedy, N. A. Kramarova, N. A. Kramarova, S. E. Strahan, S. E. Strahan, P. A. Newman, L. Coy, W. J. Randel, M. Park, D. W. Waugh, S. M. Frith, S. M. Frith   +11 more
doaj   +1 more source

Modulation of the Period of the Quasi-Biennial Oscillation by the Solar Cycle [PDF]

, 2009
The authors examine the mechanism of solar cycle modulation of the Quasi-Biennial Oscillation (QBO) period using the Two-and-a-Half-Dimensional Interactive Isentropic Research (THINAIR) model.
Jiang, Xun, Kuai, Le, Shia, Run-Lie, Tung, Ka Kit, Yung, Yuk L.   +4 more
core   +2 more sources

Finer Vertical Resolution Improves the Sudden Stratospheric Warming Prediction Through Better Representing Planetary Waves

Geophysical Research Letters, Volume 53, Issue 5, 16 March 2026.
Abstract Sudden stratospheric warmings (SSWs) strongly impact tropospheric weather, yet their accurate prediction remains a significant challenge. This study investigates the predictability of SSWs in the Whole Atmosphere Community Climate Model with different vertical resolutions.
Huiwen Xiao, Lin Wang, Xi Chen, Adam A. Scaife, Steven C. Hardiman, Nick J. Dunstone, Yuan Liang   +6 more
wiley   +1 more source

On the forcings of the unusual Quasi-Biennial Oscillation structure in February 2016 [PDF]

Atmospheric Chemistry and Physics, 2020
The westerly phase of the stratospheric Quasi-Biennial Oscillation (QBO) was reversed during Northern Hemisphere winter 2015/2016 for the first time since records began in 1953.
H. Li, H. Li, H. Li, R. Pilch Kedzierski, K. Matthes, K. Matthes   +5 more
doaj   +1 more source

Simulated Tropical Troposphere Response to the QBO: Effect of Vertical Resolution, Gravity Waves Parameterization, and Boundary Forcing

Geophysical Research Letters, Volume 53, Issue 5, 16 March 2026.
Abstract An intermediate complexity general circulation model is used to isolate the effect of vertical resolution and gravity wave parameterization on the simulated monthly quasi‐biennial oscillation (QBO)‐tropical precipitation linkage. For low vertical resolution, the model is able to simulate QBO in the lowermost stratosphere, and its impact on the
Chen Schwartz, Chaim I. Garfinkel, Wen Chen   +2 more
wiley   +1 more source

Teleconnection of the Quasi-biennial oscillation with boreal winter surface climate in Eurasia and North America

Communications Earth & Environment
An improved understanding of dynamical coupling from regional to global scales via tropospheric or stratospheric region can be helpful in improving seasonal forecasts for a given region of interest.
Vinay Kumar, Matthew H. Hitchman, Wenyuan Du, S. K. Dhaka, Shigeo Yoden   +4 more
doaj   +1 more source

Effect of the Quasi‐Biennial Oscillation on Carbon Monoxide in the Stratosphere

Earth and Space Science, 2019
The interannual variability of tropical carbon monoxide from the Microwave Limb Sounder over 2004–2018 period is dominated by the quasi‐biennial oscillation (QBO).
Yuk L. Yung, Junyang Long, Jonathan H. Jiang, Siteng Fan, Xun Jiang, Run‐Lie Shia   +5 more
doaj   +1 more source

The stratospheric quasi-biennial oscillation observed in the semidiurnal ground pressure data [PDF]

Annales Geophysicae, 1995
Ground pressure observations made at Macao (22°N, 113°E) from 1953 to 1991 are analyzed and compared with the stratospheric quasi-biennial oscillation (QBO) data obtained during the same interval.
H. Teitelbaum, F. Vial, P. Bauer
doaj   +1 more source

A seismic signature of a second dynamo?

, 2010
The Sun is a variable star whose magnetic activity varies most perceptibly on a timescale of approximately 11 years. However, significant variation is also observed on much shorter timescales.
Antia, Benevolenskaya, Broomhall, Chaplin, Christensen-Dalsgaard, Elsworth, Fletcher, Hathaway, Jiménez-Reyes, Jiménez-Reyes, Pallé, Vecchio   +11 more
core   +1 more source