Mechanisms and predictability of sudden stratospheric warming in winter 2018 [PDF]
Weather and Climate Dynamics, 2020 In the beginning of February 2018 a rapid deceleration of the westerly circulation in the polar Northern Hemisphere stratosphere took place, and on 12 February the zonal-mean zonal wind at 60∘ N and 10 hPa reversed to easterly in a sudden ...
I. A. Statnaia +3 more
doaj +4 more sources
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
core +7 more sources
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
openaire +3 more sources
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
openaire +5 more sources
On the Influence of ENSO on Sudden Stratospheric Warmings
Journal of Geophysical Research: Atmospheres, 2023 Abstract Using the extended ERA5 reanalysis and three state‐of‐the‐art models, this study explores how El Niño‐Southern Oscillation (ENSO) can influence the total frequency, seasonal cycle and preconditioning of sudden stratospheric warmings (SSWs).
Palmeiro, F. +4 more
openaire +4 more sources
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
openaire +2 more sources
Geophysical Monograph Series, Page 169-190., 2021 Exploring the links between Large Igneous Provinces and dramatic environmental impact
An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Nasrrddine Youbi +9 more
wiley +1 more source
A tropical stratopause precursor for sudden stratospheric warmings. [PDF]
Sci Rep, 2022 AbstractDramatic meteorological phenomena in the winter polar stratosphere known as Sudden Stratospheric Warming (SSW) events are well recognized for their impacts felt across the whole atmosphere. Apart from the influence of tropospheric forcing and stratospheric control, many studies have addressed the possible role of external factors on the ...
Koushik N, Kumar KK, Pramitha M.
europepmc +5 more sources
Why Are Stratospheric Sudden Warmings Sudden (and Intermittent)? [PDF]
Journal of the Atmospheric Sciences, 2020 Abstract This paper examines the role of wave–mean flow interaction in the onset and suddenness of stratospheric sudden warmings (SSWs). Evidence is presented that SSWs are, on average, a threshold behavior of finite-amplitude Rossby waves arising from the competition between an increasing wave activity A and a decreasing zonal-mean ...
Jonathan Falk +2 more
openaire +1 more source
Impact of the 2009 major stratospheric sudden warming on the composition of the stratosphere [PDF]
Atmospheric Chemistry and Physics, 2015 Abstract. In a case study of a remarkable Major stratospheric sudden Warming (MW) during the boreal winter 2008/09, we investigate how transport and mixing triggered by this event affect the composition of the whole stratosphere in the Northern Hemisphere.
M. Tao +7 more
openaire +6 more sources