Results 71 to 80 of about 23,688 (213)

The Buffer Zone of the Quasi-Biennial Oscillation [PDF]

Journal of the Atmospheric Sciences, 2019
Abstract The quasi-biennial oscillation (QBO) is a descending pattern of winds in the stratosphere that vanishes near the top of the tropical tropopause layer, even though the vertically propagating waves that drive the QBO are thought to originate in the troposphere several kilometers below.
Aaron Match, Stephan Fueglistaler
openaire   +1 more source

Benchmarking Atmospheric Circulation Variability in an AI Emulator, ACE2, and a Hybrid Model, NeuralGCM

Geophysical Research Letters, Volume 53, Issue 4, 28 February 2026.
Abstract Physics‐based atmosphere‐land models with prescribed sea surface temperature have notable successes but also biases in their ability to represent atmospheric variability compared to observations. Recently, AI emulators and hybrid models have emerged with the potential to overcome these biases, but still require systematic evaluation against ...
I. Baxter, H. A. Pahlavan, P. Hassanzadeh, K. Rucker, T. A. Shaw   +4 more
wiley   +1 more source

Quasi-Biennial Oscillation influence on Australian summer rainfall

npj Climate and Atmospheric Science
The variability and distribution of Australia’s summer rainfall are influenced by modes of climate variability on multi-week to multi-year time scales.
Xiaoxuan Jiang, Neil J. Holbrook, Andrew G. Marshall, Peter T. Love   +3 more
doaj   +1 more source

Modulation of winter precipitation associated with tropical cyclone of the western North Pacific by the stratospheric Quasi-Biennial oscillation

Environmental Research Letters, 2021
Tropical cyclone precipitation (TCP) has increasing impacts on many coastal regions under global warming. Causes of TCP variation have been principally explored in the troposphere.
Lei Wang, Lin Wang, Wen Chen, Jingliang Huangfu   +3 more
doaj   +1 more source

Role of the Diurnal Tide in Driving the Westward Phase of the Mesospheric Semiannual Oscillation Around March Equinox

Geophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract The mesospheric semiannual oscillation (MSAO) in tropical zonal‐mean zonal winds exhibits a strong westward phase around March equinox. It has been thought that the migrating diurnal tide (DW1) plays a role in the initiation of this phase because DW1 peaks around this time and satellite observations have shown it to undergo wave breaking.
Christopher S. Krier, Hanli Liu, Guiping Liu   +2 more
wiley   +1 more source

Steady Source Gravity Wave Parameterizations and the Observed Momentum Flux Intermittency

Geophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract Observational estimates of gravity wave momentum fluxes obtained from analyses of super‐pressure balloon tracks show an approximate log normal distribution in space and time. One study has suggested that a non‐orographic gravity wave parameterization with a steady source could reproduce this distribution through variability in the background ...
Robert C. King, Brian Green, Aditi Sheshadri   +2 more
wiley   +1 more source

Recovering Quasi-Biennial Oscillations from Chaos

Journal of the Atmospheric Sciences
Abstract The quasi-biennial oscillation (QBO) is understood to result from wave–mean-flow interactions, but the reasons for its relative stability remain a subject of ongoing debate. In addition, consensus has yet to be reached regarding the respective roles of different equatorial wave types in shaping the QBO’s characteristics. Here, we employ Holton–
Chartrand, Xavier, Nadeau, Louis-Philippe, Venaille, Antoine   +2 more
openaire   +2 more sources

Prediction of European Winter 2023/24: Influence of a Strong El Niño

Atmospheric Science Letters, Volume 27, Issue 2, February 2026.
The UK winter seasonal outlook for 2023/24 gave good guidance with increased chances of mild, wet and windy conditions, particularly in early winter, which verified well when compared with observations. December was particularly stormy. Our analysis suggests the key driver was the well forecast, strong El Niño event, with the late winter European ...
Sarah Ineson, Chris Almond, Paul Davies, Nick J. Dunstone, Chris K. Folland, Margaret Gordon, Steven C. Hardiman, Jeff R. Knight, Peter McLean, Yu Nie, Adam A. Scaife, Doug M. Smith, Nicky Stringer, Hazel E. Thornton, Brent Walker   +14 more
wiley   +1 more source

Quasi‐Biennial Oscillation Influence on Tropical Convection and El Niño Variability

Geophysical Research Letters
The Quasi‐Biennial Oscillation (QBO) of descending zonal winds is the leading mode of tropical stratospheric variability. Numerous studies have explored its connection with the troposphere, including its sensitivity to El Niño‐Southern Oscillation (ENSO).
Mario Rodrigo, Javier García‐Serrano, Ileana Bladé   +2 more
doaj   +1 more source

The Global Teleconnection Signature of the Madden‐Julian Oscillation and Its Modulation by the Quasi‐Biennial Oscillation

Journal of Geophysical Research: Atmospheres, 2020
Recent research has suggested that the tropical and extratropical character of the Madden‐Julian oscillation (MJO) depends on the state of the stratospheric quasi‐biennial oscillation (QBO).
B. Toms, E. Barnes, E. Maloney, S. C. Heever   +3 more
semanticscholar   +1 more source