Results 71 to 80 of about 547,637 (160)

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

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

Increased Frequency, Duration, and Area of Winter Polynyas North of Greenland in a Warming Climate

Geophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract Polynyas play a crucial role in the polar marine ecosystems and climate system. Four winter polynya events north of Greenland have been observed, but the response of winter polynyas to climate warming remains unknown. This study investigates projected changes in winter polynyas in the Wandel Sea north of Greenland using the AWI‐CM3 climate ...
Qi Shu, Qiang Wang, Haibo Bi, Dmitry V. Sein, Zhenya Song, Fangli Qiao   +5 more
wiley   +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

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

Dynamical Precursors for Statistical Prediction of Stratospheric Sudden Warming Events [PDF]

, 2018
This work explores dynamical arguments for statistical prediction of stratospheric sudden warming events (SSWs). Based on climate model output, it focuses on two predictors, upward wave activity in the lower stratosphere and meridional potential ...
Reichler, T, T. Reichler, M. Jucker, Jucker, M ; https://orcid.org/, Jucker, M   +4 more
core   +1 more source

Unprecedented Extreme Dust Storm Triggered by Stratosphere‐Troposphere Interactions

Geophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract An unprecedented dust storm struck southern China in April 2025, affecting hundreds of millions of people in regions rarely impacted by dust storms and challenging existing understanding of lower‐latitude dust storms. Here, we show that polar stratospheric signals enabled this event by modulating tropospheric teleconnection, revealing an ...
Wenqi Zhang, Mei Chong, Huiwen Xiao, Shengkai Wang, Qiang Zhang, Xi Chen, Lin Wang   +6 more
wiley   +1 more source

Antarctic planetary wave spectrum under different polar vortex conditions in 2019 and 2020 based on total ozone column data

Український антарктичний журнал, 2022
We examine the zonal wavenumber spectrum of planetary (Rossby) waves in the atmosphere above Antarctica in each of two contrasting years: in 2019, when there was a sudden stratospheric warming (SSW), and in 2020 when the Antarctic stratospheric vortex ...
A. Grytsai, G. Milinevsky, Yu. Andrienko, A. Klekociuk, Yu. Rapoport , O. Ivaniha   +5 more
doaj   +1 more source

Physics‐Aware AI‐Driven 4D Temperature Reconstruction With Enhanced Non‐Uniform Vertical Resolution in Near Space (20–80 km)

Geophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract Near‐space temperature is crucial for atmospheric dynamics and aerospace applications, yet data sets with refined vertical resolution remain scarce. We present the Atmospheric Spatio‐Temporal Reconstruction Network (AtmoST‐Net), which integrates high‐resolution SABER observations with dual‐source reanalysis, combining non‐uniform vertical ...
Huanwei Zhang, Yang He, Zheng Sheng
wiley   +1 more source

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