Results 31 to 40 of about 23,688 (213)

Diurnal Cycle of Tropospheric Winds over West Sumatra and Its Variability Associated with Various Climate and Weather Modes

Atmosphere, 2023
The typical diurnal variability of tropospheric winds over West Sumatra and their changes associated with El Niño Southern Oscillation, Quasi-Biennial Oscillation, Madden–Julian Oscillations and convectively coupled Kelvin waves during the extended ...
Wojciech Ryszard Szkolka, Dariusz Bartłomiej Baranowski, Maria K. Flatau, Marzuki Marzuki, Toyoshi Shimomai, Hiroyuki Hashiguchi   +5 more
doaj   +1 more source

The impact of increasing stratospheric radiative damping on the quasi-biennial oscillation period [PDF]

Atmospheric Chemistry and Physics, 2021
Stratospheric radiative damping increases as atmospheric carbon dioxide concentration rises. We use the one-dimensional mechanistic models of the quasi-biennial oscillation (QBO) to conduct sensitivity experiments and find that the simulated QBO period ...
T. Zhou, T. Zhou, K. DallaSanta, K. DallaSanta, L. Nazarenko, L. Nazarenko, G. A. Schmidt, Z. Jin   +7 more
doaj   +1 more source

Progress in Simulating the Quasi‐Biennial Oscillation in CMIP Models

Journal of Geophysical Research: Atmospheres, 2020
The quasi‐biennial oscillation (QBO) of the zonal mean zonal wind is the primary mode of variability in the tropical lower stratosphere. The QBO is characterized by alternating easterly westerly shear layers that descend down from ∼10 to 100 hPa. The QBO
J. Richter, J. Anstey, N. Butchart, Y. Kawatani, G. Meehl, S. Osprey, I. Simpson   +6 more
semanticscholar   +1 more source

Evaluation of the Quasi‐Biennial Oscillation in global climate models for the SPARC QBO‐initiative

Quarterly Journal of the Royal Meteorological Society, 2020
Quasi‐biennial oscillations (QBOs) in thirteen atmospheric general circulation models forced with both observed and annually repeating sea surface temperatures (SSTs) are evaluated.
A. Bushell, J. Anstey, N. Butchart, Y. Kawatani, S. Osprey, J. Richter, F. Serva, P. Braesicke, C. Cagnazzo, Chih‐Chieh Chen, H. Chun, R. Garcia, L. Gray, K. Hamilton, T. Kerzenmacher, Young‐Ha Kim, F. Lott, C. McLandress, H. Naoe, J. Scinocca, Anne K. Smith, T. Stockdale, S. Versick, S. Watanabe, K. Yoshida, S. Yukimoto   +25 more
semanticscholar   +1 more source

Defining metrics of the Quasi-Biennial Oscillation in global climate models [PDF]

Geoscientific Model Development, 2017
As the dominant mode of variability in the tropical stratosphere, the Quasi-Biennial Oscillation (QBO) has been subject to extensive research. Though there is a well-developed theory of this phenomenon being forced by wave–mean flow interaction ...
V. Schenzinger, S. Osprey, S. Osprey, L. Gray, N. Butchart   +4 more
doaj   +1 more source

Quasi‐Biennial Oscillation above 10 MB

Geophysical Research Letters, 1991
It is shown that the quasi‐biennial oscillation of the equatorial lower stratosphere was correlated with mean zonal wind in the upper stratosphere, 1979–90. Correlations were positive near 60°N and 30°S during northern hemisphere (NH) winter and negative in the equatorial upper stratosphere during all seasons. Spatial autocorrelation of mean zonal wind
Mark P. Baldwin, Timothy J. Dunkerton
openaire   +1 more source

Response of the Quasi‐Biennial Oscillation to a warming climate in global climate models

Quarterly Journal of the Royal Meteorological Society, 2020
We compare the response of the Quasi‐Biennial Oscillation (QBO) to a warming climate in eleven atmosphere general circulation models that performed time‐slice simulations for present‐day, doubled, and quadrupled CO2 climates.
J. Richter, N. Butchart, Y. Kawatani, A. Bushell, L. Holt, F. Serva, J. Anstey, I. Simpson, S. Osprey, K. Hamilton, P. Braesicke, C. Cagnazzo, Chih‐Chieh Chen, R. Garcia, L. Gray, T. Kerzenmacher, F. Lott, C. McLandress, H. Naoe, J. Scinocca, T. Stockdale, S. Versick, S. Watanabe, K. Yoshida, S. Yukimoto   +24 more
semanticscholar   +1 more source

Revisiting the Quasi-Biennial Oscillation as Seen in ERA5. Part I: Description and Momentum Budget [PDF]

Journal of the Atmospheric Sciences, 2020
The dynamics and momentum budget of the quasi-biennial oscillation (QBO) are examined in ERA5. Because of ERA5’s higher spatial resolution compared to its predecessors, it is capable of resolving a broader spectrum of atmospheric waves and allows for a ...
Hamid A. Pahlavan, Q. Fu, J. Wallace, G. Kiladis   +3 more
semanticscholar   +1 more source

Impacts of Quasi-Biennial Oscillation and El Niño–Southern Oscillation on Stratospheric Isentropic Mixing Process

Remote Sensing, 2023
The present study investigates the influences of stratospheric quasi-biennial oscillation (QBO) and El Niño–Southern Oscillation (ENSO) on the intensity of stratospheric isentropic mixing based on ERA-Interim and MERRA-2 reanalysis products.
Jing Liang, Zhiting Wang, Zhiyi Zhang, Jiali Luo   +3 more
doaj   +1 more source

Revisiting the Quasi-Biennial Oscillation as Seen in ERA5. Part II: Evaluation of Waves and Wave Forcing [PDF]

Journal of the Atmospheric Sciences, 2020
This paper describes stratospheric waves in ERA5 and evaluates the contributions of different types of waves to the driving of the quasi-biennial oscillation (QBO). Because of its higher spatial resolution compared to its predecessors, ERA5 is capable of
Hamid A. Pahlavan, J. Wallace, Q. Fu, G. Kiladis   +3 more
semanticscholar   +1 more source