El Niño and La Niña events in the tropical Pacific have significant and disrupting impacts on
the global atmospheric and oceanic circulation. El Niño Southern Oscillation (ENSO) …

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 …

Each spring, the climatological westerly winds of the Northern Hemisphere (NH)
stratospheric polar vortex turn easterly as the stratospheric equator‐to‐pole temperature …

Are Sudden Stratospheric Warmings Preceded by Anomalous Tropospheric Wave Activity? in:
Journal of Climate Volume 32 Issue 21 (2019) Jump to Content Jump to Main Navigation Logo …

It has been hypothesized that enhanced Arctic warming with respect to midlatitudes, known
as Arctic amplification, had led to a deceleration of eastward propagating Rossby waves …

Second harmonic generation is the lowest-order wave-wave nonlinear interaction occurring
in, eg, optical, radio, and magnetohydrodynamic systems. As a prototype behavior of waves …

Abstract Transient Rossby wave packets (RWPs) are a prominent feature of the synoptic to
planetary upper-tropospheric flow at the midlatitudes. Their demonstrated role in various …

Gravity waves are important drivers of dynamic processes in particular in the middle
atmosphere. To analyse atmospheric data for gravity wave signals, it is essential to separate …

Different tropospheric precursor anomalies leading to sudden stratospheric warmings
(SSWs) may result in different circulation evolution. This study finds that there are distinct …

Eastward‐propagating planetary waves (EPWs) were investigated prior to the boreal
January 2009 major sudden stratospheric warming (SSW) event simulated by the National …