Influence of sudden stratospheric warmings on tropospheric winds
Meteorologische Zeitschrift, 2011 The influence of changes in the zonal mean stratospheric potential vorticity, associated with sudden stratospheric warmings, on the zonal mean zonal wind in the troposphere is investigated by piecewise potential vorticity inversion.
Yvonne Hinssen +2 more
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Gravity waves excited during a minor sudden stratospheric warming [PDF]
Atmospheric Chemistry and Physics, 2018 An exceptionally deep upper-air sounding launched from Kiruna airport (67.82° N, 20.33° E) on 30 January 2016 stimulated the current investigation of internal gravity waves excited during a minor sudden stratospheric warming (SSW) in the
A. Dörnbrack +10 more
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Stratospheric wave driving events as an alternative to sudden stratospheric warmings [PDF]
Weather and Climate Dynamics, 2022 Natural variations in the strength of the northern stratospheric polar vortex, so-called polar vortex events, help to improve subseasonal-to-seasonal (S2S) predictions of winter climate.
T. Reichler, M. Jucker, M. Jucker
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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
openaire +5 more sources
Influence of the sudden stratospheric warming on quasi-2-day waves [PDF]
Atmospheric Chemistry and Physics, 2016 The influence of the sudden stratospheric warming (SSW) on a quasi-2-day wave (QTDW) with westward zonal wave number 3 (W3) is investigated using the Thermosphere–Ionosphere–Mesosphere Electrodynamics General Circulation Model (TIME-GCM).
S.-Y. Gu +6 more
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Stratospheric influence on North Atlantic marine cold air outbreaks following sudden stratospheric warming events [PDF]
Weather and Climate Dynamics, 2020 Marine cold air outbreaks (MCAOs) in the northeastern North Atlantic occur due to the advection of extremely cold air over an ice-free ocean. MCAOs are associated with a range of severe weather phenomena, such as polar lows, strong surface winds and ...
H. Afargan-Gerstman +8 more
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The stratospheric polar vortex and sudden stratospheric warmings [PDF]
Weather, 2020 The polar vortex is the dominant feature of the wintertime stratosphere. Sometimes, it is unusually strong, while at others it is very weak or destroyed in an event known as a sudden stratospheric warming (SSW). Both can play an important role in driving the type and predictability of the weather we experience at the surface.
openaire +1 more source
Equatorial counter electrojets and polar stratospheric sudden warmings – a classical example of high latitude-low latitude coupling? [PDF]
Annales Geophysicae, 2009 Favored occurrences of Equatorial Counter Electrojets (CEJs) with a quasi 16-day periodicity over Trivandrum (8.5° N, 76.5° E, 0.5° N diplat.) in association with the polar Stratospheric Sudden Warming (SSW) events are presented.
C. Vineeth, T. Kumar Pant, R. Sridharan
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A Continuum of Sudden Stratospheric Warmings
Journal of the Atmospheric Sciences, 2009 Abstract The k-means cluster technique is used to examine 43 yr of daily winter Northern Hemisphere (NH) polar stratospheric data from the 40-yr ECMWF Re-Analysis (ERA-40). The results show that the NH winter stratosphere exists in two natural well-separated states.
Coughlin, K, Gray, L
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The role of convective overshooting clouds in tropical stratosphere–troposphere dynamical coupling [PDF]
Atmospheric Chemistry and Physics, 2015 This paper investigates the role of deep convection and overshooting convective clouds in stratosphere–troposphere dynamical coupling in the tropics during two large major stratospheric sudden warming events in January 2009 and January 2010.
K. Kodera +3 more
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