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Relevant bibliographies by topics / Sudden warming; Tropospheric planetary waves

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Academic literature on the topic 'Sudden warming; Tropospheric planetary waves'

Author: Grafiati

Published: 4 June 2021

Last updated: 10 February 2022

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Journal articles on the topic "Sudden warming; Tropospheric planetary waves"

1

Chen, Quanliang, Luyang Xu, and Hongke Cai. "Impact of Stratospheric Sudden Warming on East Asian Winter Monsoons." Advances in Meteorology 2015 (2015): 1–10. http://dx.doi.org/10.1155/2015/640912.

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Fifty-two Stratospheric sudden warming (SSW) events that occurred from 1957 to 2002 were analyzed based on the 40-year European Centre for Medium-Range Weather Forecasts Reanalysis dataset. Those that could descent to the troposphere were composited to investigate their impacts on the East Asian winter monsoon (EAWM). It reveals that when the SSW occurs, the Arctic Oscillation (AO) and the North Pacific Oscillation (NPO) are both in the negative phase and that the tropospheric circulation is quite wave-like. The Siberian high and the Aleutian low are both strengthened, leading to an increased

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Sun, Lantao, Walter A. Robinson, and Gang Chen. "The Predictability of Stratospheric Warming Events: More from the Troposphere or the Stratosphere?" Journal of the Atmospheric Sciences 69, no. 2 (2012): 768–83. http://dx.doi.org/10.1175/jas-d-11-0144.1.

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Abstract The roles of the stratosphere and the troposphere in determining the predictability of stratospheric final warming and sudden warming events are evaluated in an idealized atmospheric model. For each stratospheric warming event simulated in the model, a number of forecast experiments are performed from 10 or 20 days prior to the warming onset with perturbations in the troposphere and in the stratosphere separately. It is found that the stratosphere affects predictions of warming onset primarily by providing the initial state of the zonal winds, while the tropospheric initial conditions

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White, Ian P., Chaim I. Garfinkel, Edwin P. Gerber, Martin Jucker, Peter Hitchcock, and Jian Rao. "The Generic Nature of the Tropospheric Response to Sudden Stratospheric Warmings." Journal of Climate 33, no. 13 (2020): 5589–610. http://dx.doi.org/10.1175/jcli-d-19-0697.1.

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AbstractThe tropospheric response to midwinter sudden stratospheric warmings (SSWs) is examined using an idealized model. SSW events are triggered by imposing high-latitude stratospheric heating perturbations of varying magnitude for only a few days, spun off from a free-running control integration (CTRL). The evolution of the thermally triggered SSWs is then compared with naturally occurring SSWs identified in CTRL. By applying a heating perturbation, with no modification to the momentum budget, it is possible to isolate the tropospheric response directly attributable to a change in the strat

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Peters, D. H. W., P. Vargin, A. Gabriel, N. Tsvetkova, and V. Yushkov. "Tropospheric forcing of the boreal polar vortex splitting in January 2003." Annales Geophysicae 28, no. 11 (2010): 2133–48. http://dx.doi.org/10.5194/angeo-28-2133-2010.

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Abstract. The dynamical evolution of the relatively warm stratospheric winter season 2002–2003 in the Northern Hemisphere was studied and compared with the cold winter 2004–2005 based on NCEP-Reanalyses. Record low temperatures were observed in the lower and middle stratosphere over the Arctic region only at the beginning of the 2002–2003 winter. Six sudden stratospheric warming events, including the major warming event with a splitting of the polar vortex in mid-January 2003, have been identified. This led to a very high vacillation of the zonal mean circulation and a weakening of the stratos

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Pogoreltsev, A. I., O. G. Aniskina, A. Y. Kanukhina, T. S. Ermakova, A. I. Ugryumov, and Y. V. Efimova. "Tropospheric circulation response to sudden stratospheric warming observed in January 2013." HYDROMETEOROLOGY AND ECOLOGY. PROCEEDINGS OF THE RUSSIAN STATE HYDROMETEOROLOGICAL UNIVERSITY, no. 60 (2020): 241–54. http://dx.doi.org/10.33933/2074-2762-2020-60-241-254.

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Analysis of the dynamical regime changes in the stratosphere during different phases of the Sudden Stratospheric Warming (SSW) that has been observed in January 2013 is presented. The different mechanisms of SSW influence on the tropospheric circulation through the stationary planetary waves (SPWs) reflection and/or increase in SPWs activity due to nonlinear interaction with the mean flow and their subsequent propagation into the troposphere are discussed. Three-dimensional wave activity flux and its divergence are determined using the UK Met Office data; the synoptic situation and its changes

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Xie, Jincai, Jinggao Hu, Haiming Xu, Shuai Liu, and Huan He. "Dynamic Diagnosis of Stratospheric Sudden Warming Event in the Boreal Winter of 2018 and Its Possible Impact on Weather over North America." Atmosphere 11, no. 5 (2020): 438. http://dx.doi.org/10.3390/atmos11050438.

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In the winter of 2018, a major stratospheric sudden warming (SSW) event occurred in the Northern Hemisphere. This study performs a dynamic diagnosis on this 2018 SSW event and analyzes its possible impact on the weather over North America. The result shows that the ridge over Alaska in the mid-troposphere and the trough over the northeastern North America are the prominent tropospheric precursory signals before the occurrence of this SSW event. The signals appear 10 days before the SSW, which greatly enhances the propagation of the planetary wavenumber 2 from the troposphere to the extratropic

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Albers, John R., George N. Kiladis, Thomas Birner, and Juliana Dias. "Tropical Upper-Tropospheric Potential Vorticity Intrusions during Sudden Stratospheric Warmings." Journal of the Atmospheric Sciences 73, no. 6 (2016): 2361–84. http://dx.doi.org/10.1175/jas-d-15-0238.1.

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Abstract The intrusion of lower-stratospheric extratropical potential vorticity into the tropical upper troposphere in the weeks surrounding the occurrence of sudden stratospheric warmings (SSWs) is examined. The analysis reveals that SSW-related PV intrusions are significantly stronger, penetrate more deeply into the tropics, and exhibit distinct geographic distributions compared to their climatological counterparts. While climatological upper-tropospheric and lower-stratospheric (UTLS) PV intrusions are generally attributed to synoptic-scale Rossby wave breaking, it is found that SSW-related

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Lindgren, Erik A., and Aditi Sheshadri. "The role of wave–wave interactions in sudden stratospheric warming formation." Weather and Climate Dynamics 1, no. 1 (2020): 93–109. http://dx.doi.org/10.5194/wcd-1-93-2020.

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Abstract. The effects of wave–wave interactions on sudden stratospheric warming formation are investigated using an idealized atmospheric general circulation model, in which tropospheric heating perturbations of zonal wave numbers 1 and 2 are used to produce planetary-scale wave activity. Zonal wave–wave interactions are removed at different vertical extents of the atmosphere in order to examine the sensitivity of stratospheric circulation to local changes in wave–wave interactions. We show that the effects of wave–wave interactions on sudden warming formation, including sudden warming frequen

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Sjoberg, Jeremiah P., and Thomas Birner. "Transient Tropospheric Forcing of Sudden Stratospheric Warmings." Journal of the Atmospheric Sciences 69, no. 11 (2012): 3420–32. http://dx.doi.org/10.1175/jas-d-11-0195.1.

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Abstract The amplitude of upward-propagating tropospherically forced planetary waves is known to be of first-order importance in producing sudden stratospheric warmings (SSWs). This forcing amplitude is observed to undergo strong temporal fluctuations. Characteristics of the resulting transient forcing leading to SSWs are studied in reanalysis data and in highly truncated simple models of stratospheric wave–mean flow interaction. It is found in both the reanalysis data and the simple models that SSWs are preferentially generated by transient forcing of sufficiently long time scales (on the ord

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Hitchcock, Peter, Theodore G. Shepherd, Masakazu Taguchi, Shigeo Yoden, and Shunsuke Noguchi. "Lower-Stratospheric Radiative Damping and Polar-Night Jet Oscillation Events." Journal of the Atmospheric Sciences 70, no. 5 (2013): 1391–408. http://dx.doi.org/10.1175/jas-d-12-0193.1.

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Abstract The effect of stratospheric radiative damping time scales on stratospheric variability and on stratosphere–troposphere coupling is investigated in a simplified global circulation model by modifying the vertical profile of radiative damping in the stratosphere while holding it fixed in the troposphere. Perpetual-January conditions are imposed, with sinusoidal topography of zonal wavenumber 1 or 2. The depth and duration of the simulated sudden stratospheric warmings closely track the lower-stratospheric radiative time scales. Simulations with the most realistic profiles of radiative da

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Dissertations / Theses on the topic "Sudden warming; Tropospheric planetary waves"

1

Rosier, Suzanne Mary. "Dynamical evolution of the northern stratosphere in early winter, 1991/92 : observational and modelling studies." Thesis, University of Oxford, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.320716.

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