Sudden stratospheric warmings (SSWs) are impressive fluid dynamical events in which
large and rapid temperature increases in the winter polar stratosphere (∼ 10–50 km) are …

Abstract The Northern Hemisphere (NH) polar winter stratosphere of 2019/2020 featured an
exceptionally strong and cold stratospheric polar vortex. Wave activity from the troposphere …

The stratosphere can have a significant impact on winter surface weather on subseasonal to
seasonal (S2S) timescales. This study evaluates the ability of current operational S2S …

A minor sudden stratospheric warming (SSW) happened in September 2019 in the Southern
Hemisphere (SH) with winds at 10 hPa, 60° S reaching their minimum value on 18 …

Using the real‐time predictions from 11 models, this study analyzes the prediction of the
downward propagation and surface impact of the 2018 and 2019 sudden stratospheric …

Sudden stratospheric warming (SSW) events can significantly impact tropospheric weather
for a period of several weeks, in particular in the North Atlantic–European (NAE) region …

Sudden stratospheric warming (SSW) events can exhibit long‐lasting surface impacts that
promise improvements in medium‐range to seasonal predictability. Their surface impact is …

The strongest and most persistent upward propagation of zonal wavenumber 1 (WN1)
Rossby waves from the troposphere on record led to the rare Antarctic sudden stratospheric …

Using reanalysis, observations, and subseasonal to seasonal (S2S) forecasts, the most
recent sudden stratospheric warming (SSW) in January 2021 and its predictability are …

Using state-of-the-art models from the Coupled Model Intercomparison Project Phases 5
and 6 (CMIP5/6), future changes of sudden stratospheric warming (SSW) events under a …