Results 41 to 50 of about 713 (180)

Impact of Weak‐Constraint Four‐Dimensional Variational data assimilation on the prediction of a sudden stratospheric warming event in 2024

Quarterly Journal of the Royal Meteorological Society, EarlyView.
The Weak‐Constraint Four‐Dimensional Variational (WC‐4DVAR) system markedly improved the analysis and forecasting of the 2024 sudden stratospheric warming (SSW) event. It reduced biases and enhanced 7–9 day predictions of temperature across the SSW life cycle, with the most pronounced gains for winds also during the critical onset period.
Shaoying Li, Weimin Zhang, Shuo Ma, Bainian Liu, Yanlai Zhao, Xiaoqun Cao   +5 more
wiley   +1 more source

Reduced aerosol transport from South Asia to the Tibetan Plateau following the January 2021 sudden stratospheric warming event

Communications Earth & Environment
Aerosols from South Asia directly enhance glacier melt over the Tibetan Plateau. While the transboundary transport of aerosols from South Asia towards the Tibetan Plateau has been extensively investigated from a tropospheric perspective, less focus has ...
Yuling Hu, Haipeng Yu, Shichang Kang, Mian Xu, Siyu Chen, Junhua Yang, Xintong Chen, Jixiang Li   +7 more
doaj   +1 more source

A comparative case study of low-latitude ionosphere–thermosphere responses to successive wave-1-dominant and wave-2-dominant sudden stratospheric warming events in 2022 using the ICON and GOLD missions

Earth and Planetary Physics
Previous studies have demonstrated that sudden stratospheric warming (SSW) events can have a substantial impact on the Earth’s ionosphere–thermosphere (IT) system.
ManYu Zhang, Jing Liu, MaoSheng He, XuGuang Cai, Quan Gan, YuSong Qin, ShuHan Li   +6 more
doaj   +1 more source

The Delayed Response of the Troposphere‐Stratosphere‐Mesosphere Coupling to the 2019 Southern SSW

Geophysical Research Letters, 2022
A strong Southern Hemisphere (SH) sudden stratospheric warming event occurred in September 2019 and significantly weakened the stratospheric polar vortex. Due to the positive zonal wind anomalies in the troposphere, the barotropic/baroclinic instability,
Chengyun Yang, Tao Li, Dexin Lai, Xinyue Wang, Xianghui Xue, Xiankang Dou   +5 more
doaj   +1 more source

Possible Causes of the Occurrence of a Rare Antarctic Sudden Stratospheric Warming in 2019

Atmosphere, 2022
A minor Antarctic sudden stratospheric warming (SSW) with the strongest circulation changes since the first major SSW over the Antarctic was recorded in 2002 occurred in early September 2019.
Chenming Ma, Pengkun Yang, Xin Tan, Ming Bao   +3 more
doaj   +1 more source

Rare Lightning and Convection Characteristics During Two Successive Tornadoes in Southern China

High Voltage, EarlyView.
ABSTRACT Systematic investigations into lightning characteristics of tornado storms in China remain scarce. This study comprehensively analyses rare lightning behaviour and overshooting top characteristics for two successive tornadoes during a long‐lived supercell in southern China on 27 April 2024.
Fengquan Li, Jiangling Zhi, Yu Wang, Hantao Tao, Zhaoming Li, Shanqiang Gu, Zhe Li, Zeyu Zhang, Lei Zhang, Guoying Tang   +9 more
wiley   +1 more source

Enhanced stratosphere-troposphere and tropics-Arctic couplings in the 2023/24 winter

Communications Earth & Environment
The stratosphere-troposphere and the tropics-Arctic couplings were intermittently enhanced in the 2023/24 winter. Here we used ERA5 reanalysis data and found that due to the amplification of planetary wavenumber 1 and 2 pulses, three displacement-type ...
Lu Qian, Jian Rao, Rongcai Ren, Chunhua Shi, Siming Liu   +4 more
doaj   +1 more source

Surface hazards in North-west Europe following sudden stratospheric warming events

Environmental Research Letters, 2023
Sudden stratospheric warmings (SSWs) have been linked to surface temperature anomalies, but how these connect to changes in the likelihood of specific weather extremes and their associated weather patterns remains uncertain. While, on average, it is true
Richard J Hall, Dann M Mitchell, William J M Seviour, Corwin J Wright   +3 more
doaj   +1 more source

Disentangling Anthropogenic Effects on Southern Hemisphere Circulation and Surface Climate: A Multi‐Model Large Ensemble Approach

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 16, 28 August 2026.
Abstract Southern Hemisphere (SH) circulation and surface climate changes are emerging in recent decades. For example, in most seasons, the SH Hadley cell edge and the eddy‐driven jet stream have shifted polewards, and the Southern Annular Mode (SAM) has trended towards its positive phase.
Leandro B. Díaz, Amy H. Butler, David Avisar, Sabine Bischof, Chloe L. Boehm, Ghyslaine Boschat, William J. Dow, Chaim I. Garfinkel, Kevin M. Grise, Hemant Khatri, Bianca Mezzina, Marisol Osman, Jonathon S. Wright, Panos J. Athanasiadis, Julie M. Arblaster, Erik Behrens, Thomas J. Bracegirdle, Yuanrui Chen, Eun‐Pa Lim, Amanda C. Maycock, Seung‐Ki Min, Julia Mindlin, Scott M. Osprey, Michael Sigmond, Doug Smith, Tiffany Shaw   +25 more
wiley   +1 more source

A Minimal, Adiabatic Example of Sudden Stratospheric Warming

Journal of Advances in Modeling Earth Systems
Sudden Stratospheric Warming (SSW) are extreme weather events that can significantly impact weather patterns on short to subseasonal to seasonal timescales. In this study, we present a new idealized test case of a Sudden Stratospheric Warming (SSW) event
Joseph Mouallem, Weiye Yao, Lucas Harris, Shian‐Jiann Lin, Xi Chen   +4 more
doaj   +1 more source