Results 11 to 20 of about 2,944 (222)
The downward influence of stratospheric sudden warmings [PDF]
Journal of the Atmospheric Sciences, 2014 The coupling between the stratosphere and the troposphere following two major stratospheric sudden warmings is studied in the Canadian Middle Atmosphere Model using a nudging technique by which the zonal-mean evolution of the reference sudden warmings ...
Hitchcock, P, Simpson, IR
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Changes in Stratospheric Transport and Mixing During Sudden Stratospheric Warmings [PDF]
Journal of Geophysical Research: Atmospheres, 2018 AbstractThe extreme disruptions of the wintertime stratospheric circulation during sudden stratospheric warmings (SSW) have large effects on tracer concentrations through alterations in transport. This study analyzes the changes in residual circulation and isentropic mixing associated with SSWs, by performing composites using reanalysis (European ...
A. de la Cámara +2 more
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The preconditioning of major sudden stratospheric warmings [PDF]
Journal of Geophysical Research: Atmospheres, 2012 The preconditioning of major sudden stratospheric warmings (SSWs) is investigated with two long time series using reanalysis (ERA‐40) and model (MAECHAM5/MPI‐OM) data. Applying planetary wave analysis, we distinguish between wavenumber‐1 and wavenumber‐2 major SSWs based on the wave activity of zonal wavenumbers 1 and 2 during the prewarming phase. For
Bancala, Severin +2 more
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Classifying the tropospheric precursor patterns of sudden stratospheric warmings [PDF]
Geophysical Research Letters, 2017 Classifying the tropospheric precursor patterns of sudden stratospheric warmings (SSWs) may provide insight into the different physical mechanisms of SSWs.
Bao, Ming +3 more
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Stratospheric sudden warmings in an idealized GCM [PDF]
Journal of Geophysical Research: Atmospheres, 2016 PublishedJournal ArticleAn 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.
Fueglistaler, S +2 more
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Sudden Stratospheric Warmings [PDF]
Reviews of Geophysics, 2020 Abstract 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 associated with a complete reversal of the climatological wintertime westerly winds. SSWs are
Mark P. Baldwin +12 more
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Tracking the Stratosphere‐to‐Surface Impact of Sudden Stratospheric Warmings [PDF]
Journal of Geophysical Research: Atmospheres, 2021 AbstractSudden stratospheric warming (SSW) events are extreme atmospheric regimes which can have a signature in surface weather up to 40 days after event onset in the stratosphere. SSWs can be classified as either vortex splitting or vortex displacement events, with the nature and timing of the surface impact potentially being different between the two.
Richard J. Hall +3 more
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A sudden stratospheric warming compendium [PDF]
Earth System Science Data, 2016 Abstract. Major, sudden midwinter stratospheric warmings (SSWs) are large and rapid temperature increases in the winter polar stratosphere are associated with a complete reversal of the climatological westerly winds (i.e., the polar vortex). These extreme events can have substantial impacts on winter surface climate, including increased frequency of ...
Amy H. Butler +3 more
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Response of Arctic ozone to sudden stratospheric warmings [PDF]
Atmospheric Chemistry and Physics, 2018 Sudden stratospheric warmings (SSWs) are the main source of intra-seasonal and interannual variability in the extratropical stratosphere. The profound alterations to the stratospheric circulation that accompany such events produce rapid changes in the
A. de la Cámara +6 more
doaj +1 more source
Relation of Extreme Ionospheric Events with Geomagnetic and Meteorological Activity
Atmosphere, 2022 This paper studies extreme ionospheric events and their relations with geomagnetic and meteorological activity. With the long observation series at the Irkutsk (52° N, 104° E) and Kaliningrad (54° N, 20° E) ionosondes we obtained the datasets of ...
Konstantin G. Ratovsky +3 more
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