Results 31 to 40 of about 2,944 (222)
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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Defining Sudden Stratospheric Warmings
Bulletin of the American Meteorological Society, 2015 Abstract Sudden stratospheric warmings (SSWs) are large, rapid temperature rises in the winter polar stratosphere, occurring predominantly in the Northern Hemisphere. Major SSWs are also associated with a reversal of the climatological westerly zonal-mean zonal winds.
Amy H. Butler +5 more
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Oblique Gravity Wave Propagation During Sudden Stratospheric Warmings [PDF]
Journal of Geophysical Research: Atmospheres, 2020 AbstractGravity waves (GWs) are important for coupling the mesosphere to the lower atmosphere during sudden stratospheric warmings (SSWs). Here, a minor SSW is internally generated in a simulation with the upper‐atmosphere configuration of the ICOsahedral Nonhydrostatic model.
Stephan, C. +3 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
NOy production, ozone loss and changes in net radiative heating due to energetic particle precipitation in 2002–2010 [PDF]
Atmospheric Chemistry and Physics, 2018 We analyze the impact of energetic particle precipitation on the stratospheric nitrogen budget, ozone abundances and net radiative heating using results from three global chemistry-climate models considering solar protons and geomagnetic forcing due ...
M. Sinnhuber +8 more
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Response of Total Column Ozone at High Latitudes to Sudden Stratospheric Warmings
Atmosphere, 2023 The total column ozone (TCO) at northern high latitudes is increased over a course of 1–2 months after a major sudden stratospheric warming as a consequence of enhanced ozone eddy transport and diffusive ozone fluxes.
Klemens Hocke +2 more
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IGCM4: a fast, parallel and flexible intermediate climate model [PDF]
, 2014 The IGCM4 (Intermediate Global Circulation Model version 4) is a global spectral primitive equation climate model whose predecessors have extensively been used in areas such as climate research, process modelling and atmospheric dynamics.
Fueglistaler, Stephan +4 more
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Stratospheric wave driving events as an alternative to sudden stratospheric sudden warmings [PDF]
, 2022 Abstract. Natural variations in the strength of the northern stratospheric polar vortex, so-called polar vortex events, help to improve sub-seasonal to seasonal (S2S) predictions of winter climate. Past research on polar vortex events has been largely focused on stratospheric sudden warming events (SSWs), a class of relatively strong weakenings of the ...
Thomas Reichler, Martin Jucker
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Do Sudden Stratospheric Warmings Boost Convective Activity in the Tropics?
Geophysical Research Letters, 2021 The impact of sudden stratospheric warmings (SSWs) on the tropical troposphere is investigated using 5000‐years scale ensemble simulations with a 60‐km global atmospheric model to detect signals from large natural variability of convection. Stratospheric
Kohei Yoshida, Ryo Mizuta
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Geophysical Research Letters, 2022 We apply a causal inference‐based framework to test and quantify previously suggested causal relationships between Northern Hemisphere blocking, upward wave‐activity fluxes and stratospheric polar vortex (SPV) variability using reanalysis data.
Kamilya Yessimbet +3 more
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