Results 71 to 80 of about 9,484 (178)

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

open access: yesGeophysical 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   +2 more
doaj   +1 more source

First Successful Hindcasts of the 2016 Disruption of the Stratospheric Quasi‐biennial Oscillation

open access: yesGeophysical Research Letters, 2018
In early 2016 the quasi‐biennial oscillation in tropical stratospheric winds was disrupted by an anomalous easterly jet centered at ~40 hPa, a development that was completely missed by all operational extended range weather forecast systems.
S. Watanabe   +4 more
doaj   +1 more source

An Ensemble Multivariate Multiscale Framework for Prediction of Long‐Term Solar Activity With Nonstationary Oscillations

open access: yesEarth and Space Science, Volume 13, Issue 4, April 2026.
Abstract Solar activity is usually characterized by different indices from different perspectives, which are commonly interconnected and contain nonstationary oscillations (NSOs). Given the significant influence of solar activity on space weather, the Earth and humans, it is of great significance to predict solar activity for better understanding not ...
Shan Jiang   +4 more
wiley   +1 more source

Lagged Response of MJO Convection and Precipitation to Solar Ultraviolet Variations on Intraseasonal Time Scales

open access: yesGeophysical Research Letters
Composite analyses of NOAA satellite‐based outgoing longwave radiation data and ERA5 reanalysis data for nearly six solar maximum periods support the existence of a response of tropical convection and precipitation to short‐term (∼27‐day) solar ...
C. A. Hoopes   +2 more
doaj   +1 more source

The Quasi-Biennial Oscillation in atmospheric ozone [PDF]

open access: yes
Examination of the relationship between tropical stratosphere zonal wind and ozone indicate a variable response in latitude with Northern Hemisphere tropics and polar regions and Southern Hemisphere mid-latitudes showing the strongest response with ...
London, J., Oltmans, S. J.
core   +1 more source

Deciphering Asynchronous Teleconnections: How Dynamic Time Warping Reveals the Hidden Drivers of Iranian Drought

open access: yesEarth and Space Science, Volume 13, Issue 4, April 2026.
Abstract Identifying robust precursors for seasonal drought is a central challenge in Earth system science, traditionally approached with linear methods that often fail to capture the complex, asynchronous nature of teleconnections. These methods, by assuming fixed‐phase relationships, can overlook or misrepresent crucial climate drivers.
P. Mahmoudi   +5 more
wiley   +1 more source

Quasiperiodic Variations of the GOES Soft X-Ray Flares during Solar Cycles 21–25

open access: yesThe Astrophysical Journal Supplement Series
The long-term variations of quasiperiodic solar flares are of great importance for a better understanding and accurate prediction of solar flare activity.
Guoqing Huang   +8 more
doaj   +1 more source

Imprint of the Quasi‐Biennial Oscillation on the Ionosphere and Thermosphere

open access: yesJournal of Geophysical Research: Space Physics, Volume 131, Issue 4, April 2026.
Abstract The Quasi‐Biennial Oscillation (QBO) is a dominant mode of stratospheric variability and is known to modulate the variability of the ionosphere‐thermosphere (IT) system. However, the extent of its influence on the ionosphere‐thermosphere system remains uncertain due to weak signals and confounding with similar periodicities in solar flux.
D. Singh, L. P. Goncharenko, S. R. Zhang
wiley   +1 more source

Studies of the observed and theoretical variations of atmospheric ozone [PDF]

open access: yes
The four related topics covered include: (1) distributions of total and upper atmospheric ozone and their time and space variations; (2) observed and theoretical models of the quasi-biennial oscillation (QBO) ozone variation; (3) radiative processes in ...
London, Julius
core   +1 more source

Interannual variability of the Tropical Atlantic independent of and associated with ENSO: Part II. The South Tropical Atlantic [PDF]

open access: yes, 2006
Two dominant ocean-atmosphere modes of variability on interannual timescales were defined in Part I of this work, namely, the North Tropical Atlantic (NTA) and South Tropical Atlantic (STA) modes.
Barreiro   +53 more
core   +1 more source

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