Results 81 to 90 of about 713 (180)

Comparison of stratospheric evolution during the major sudden stratospheric warming events in 2018 and 2019

Earth and Planetary Physics, 2020
Using Modern-Era Retrospective analysis for Research and Applications, Version 2 (MERRA-2) data in the northern hemisphere at the 10 hPa level, we compared the stratospheric evolution of temperature and geopotential height during two major sudden ...
Zheng Ma, Yun Gong, ShaoDong Zhang, JiaHui Luo, QiHou Zhou, ChunMing Huang, KaiMing Huang   +6 more
doaj   +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

Stratospheric sudden warmings in an idealized GCM [PDF]

Journal of Geophysical Research: Atmospheres, 2014
AbstractAn idealized general circulation model (GCM) with an analytically described Newtonian cooling term is employed to study the occurrence rate of sudden stratospheric warmings (SSWs) over a wide range of parameters. In particular, the sensitivity of the SSW occurrence rates to orographic forcing and both relaxation temperature and damping rate is ...
Jucker, M, Fueglistaler, S, Vallis, Geoffrey K.   +2 more
openaire   +2 more sources

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

Polar Vortex Disruptions by High Latitude Ocean Warming

Geophysical Research Letters
Mid‐latitude extreme cold outbreaks are associated with disruptions of the polar vortex, which often happen abruptly in connection to a sudden stratospheric warming.
Mostafa E. Hamouda, Alice Portal, Claudia Pasquero   +2 more
doaj   +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

How to Predict the Phase Shift of “Warm Arctic–Cold Eurasia” Pattern Between Early and Late Winter?

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 13, 16 July 2026.
Abstract The “Warm Arctic−Cold Eurasia” (WACE) pattern frequently undergoes distinct phase reversals between early and late winter, posing significant challenges for climate prediction. Current state‐of‐the‐art real‐time prediction models exhibit limited skill in forecasting WACE reversals, and the main reason is poor representation of key atmospheric ...
Zhicong Yin, Tianbao Xu
wiley   +1 more source

The Sudden Stratospheric Warming Events in the Antarctic in 2024

Geophysical Research Letters
In July and August 2024, two consecutive stratospheric sudden warming (SSW) events (termed SW07 and SW08) occurred over Antarctic, both featuring a rapid 17°C temperature rise at 10 hPa and significant stratospheric polar vortex (SPV) deceleration.
Yucheng Zi, Zhenxia Long, Jinyu Sheng, Gaopeng Lu, Will Perrie, Ziniu Xiao   +5 more
doaj   +1 more source

Spatiotemporal Analysis of Extreme Winter Temperatures in Ireland

Environmetrics, Volume 37, Issue 5, July 2026.
ABSTRACT We analyze synoptic observational data on extreme daily minimum temperatures in winter months over Ireland from 1950–2022. We model the tail of the marginal distributions of extreme winter minima using a generalized Pareto distribution capturing temporal and spatial sources of non‐stationarity.
Dáire Healy, Jonathan A. Tawn, Peter Thorne, Andrew Parnell   +3 more
wiley   +1 more source

Dynamical Precursors for Statistical Prediction of Stratospheric Sudden Warming Events

Geophysical Research Letters, 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 ...
M. Jucker, T. Reichler
doaj   +1 more source