Results 51 to 60 of about 320 (144)

Understanding the Response of the Quasi‐Biennial Oscillation to Carbon Dioxide and Sea Surface Temperature Increases in Aqua‐Planet Simulations

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 13, 16 July 2026.
Abstract The Quasi‐Biennial Oscillation (QBO) of the tropical stratospheric zonal winds influences tracer transport, the stratospheric polar vortex, and extra‐tropical surface variability. However, the response of the QBO to increasing greenhouse gas concentrations is still uncertain.
A. M. Johnson, M. G. Flanner, C. Jablonowski   +2 more
wiley   +1 more source

Enhanced Polar Vortex Predictability Following Sudden Stratospheric Warming Events

Geophysical Research Letters, 2023
Sudden stratospheric warming (SSW) events can form a window of forecast opportunity for polar vortex predictions on subseasonal‐to‐seasonal time scales.
Philip Rupp, Jonas Spaeth, Hella Garny, Thomas Birner   +3 more
doaj   +1 more source

Stratospheric and tropospheric seasonality and its implications for observation requirements in numerical weather prediction

Quarterly Journal of the Royal Meteorological Society, Volume 152, Issue 778, July 2026 Part A.
Daily time series of zonal‐mean zonal wind (m·s−1) at 10 hPa and 60° N from 1950 to 2021 from the ERA5 reanalysis. This shows huge variability in some seasons and very little in others. We provide evidence that high‐level observations, radiosonde and satellite, are more important during the extended winter season with its very large variability ...
Bruce Ingleby, Inna Polichtchouk
wiley   +1 more source

Observational Evidence of Distinguishable Weather Patterns for Three Types of Sudden Stratospheric Warming During Northern Winter

Frontiers in Earth Science, 2021
Sudden stratospheric warming (SSW) events often lead to a cold surface air temperature anomaly over the extratropical regions. In this study, we propose, through observational evidence, that the types of SSW determine the severity of the cold anomaly ...
Hyesun Choi, Joo-Hong Kim, Baek-Min Kim, Seong-Joong Kim   +3 more
doaj   +1 more source

Statistical Properties of Dayside Single‐Crest Structure of the Equatorial Ionization Anomaly Derived From Global Ionospheric Maps

Space Weather, Volume 24, Issue 7, July 2026.
Abstract The classical Equatorial Ionization Anomaly (EIA) is characterized by two separated plasma accumulation regions off the geomagnetic equator and a plasma depletion region in between. Deviations from the typical double‐crest structure, including the single crest and multiple crests, have been observed.
Ping Zhou, Xing Meng, Jiawen Chen, Jiuhou Lei   +3 more
wiley   +1 more source

Mesospheric Precursors to the Major Stratospheric Sudden Warming of 2009: Validation and Dynamical Attribution using a Ground-to-Edge-of-Space Data Assimilation System

Journal of Advances in Modeling Earth Systems, 2011
Global meteorological analyses from an assimilation of operational and research observations spanning the ~0-90~km altitude range confirm earlier tentative suggestions that high-altitude winds throughout the upper mesosphere reversed a week before the ...
Lawrence Coy
doaj   +1 more source

Comparison of Key Characteristics of Remarkable SSW Events in the Southern and Northern Hemisphere

Atmosphere, 2020
An exceptionally strong sudden stratospheric warming (SSW) in the Southern Hemisphere (SH) during September 2019 was observed. Because SSW in the SH is very rare, comparison with the only recorded major SH SSW is done.
Michal Kozubek, Jan Lastovicka, Peter Krizan   +2 more
doaj   +1 more source

The 2009–2010 Arctic stratospheric winter – general evolution, mountain waves and predictability of an operational weather forecast model [PDF]

Atmospheric Chemistry and Physics, 2012
The relatively warm 2009–2010 Arctic winter was an exceptional one as the North Atlantic Oscillation index attained persistent extreme negative values. Here, selected aspects of the Arctic stratosphere during this winter inspired by the analysis of the ...
A. Dörnbrack, M. C. Pitts, L. R. Poole, Y. J. Orsolini, K. Nishii, H. Nakamura   +5 more
doaj   +1 more source

Attribution of Recent Change in the Stratospheric Temperature and Its Application to Future Projection

Geophysical Research Letters, Volume 53, Issue 10, 28 May 2026.
Abstract The stratospheric temperature has continued to decline over the past half‐century, in contrast to the steady increase in the tropospheric temperature. However, the future changes in stratospheric temperature under anthropogenic influences, as well as the specific role of stratospheric interactive chemistry in their attribution and projection ...
Shun Li, Jiankai Zhang, Seok‐Woo Son, Yang Chen, Chongyang Zhang, Zhe Wang, Junxuan Tang   +6 more
wiley   +1 more source

Influence of High Latitude Sudden Stratospheric Warming on Tropical Weather: Observations From a 205 MHz Stratosphere Troposphere Radar and Surface Meteorological Parameters

Earth and Space Science, 2021
The study illustrates the evidence of dynamical coupling between the high‐latitude sudden stratospheric warming (SSW) events that occurred in three consecutive winter seasons and the concomitant changes in the wind pattern in the lower stratosphere and ...
R. Remya, M. G. Manoj, V. Rakesh, K. Mohanakumar, C. Sivan   +4 more
doaj   +1 more source