Results 71 to 80 of about 1,935 (190)

The association between stratospheric weak polar vortex events and cold air outbreaks

, 2009
Previous studies have identified an association between near-surface temperature anomalies in the Northern Hemisphere and weak stratospheric polar westerlies.
Baldwin, Baldwin, Baldwin, Barnett, Bracegirdle, Bueh, Cai, Cellitti, Charlton, Charney, Chen, Chen, Cohen, Cordero, Garfinkel, Hurrell, Hurrell, Jeong, Kalnay, Kenyon, Kolstad, Konrad, Kuroda, Limpasuvan, Limpasuvan, Lorenz, Martius, Matsuno, Matsuno, McIntyre, Mercer, Mukougawa, Otterå, Pickart, Pinto, Polvani, Reichler, Renfrew, Scaife, Scaife, Skogseth, Song, Stephenson, Takaya, Thompson, Thompson, Thompson, Walsh   +47 more
core   +1 more source

Examining the predictability of the Stratospheric Sudden Warming of January 2013 using multiple NWP systems [PDF]

, 2016
The first multi-model study to estimate the predictability of a boreal Sudden Stratospheric Warming (SSW) is performed using five NWP systems. During the 2012-2013 boreal winter, anomalous upward propagating planetary wave activity was observed towards ...
Andrea Lang, Andrew Charlton-Perez, Carolyn Reynolds, David R. Jackson, Edwin Gerber, Greg Roff, Iwasaki T., Jacob C. H. Cheung, Justin McLay, Mark Baldwin, Martin Charron, Michael Sigmond, Om P. Tripathi, Ryo Mizuta, Scherhag R., Seok-Woo Son, Stephen D. Eckermann, Tim Stockdale, Yuhji Kuroda   +18 more
core   +1 more source

Seasonal Predictions and Their Applications in the Mediterranean Region: Part I—Sources of Predictability and Prediction Skill

International Journal of Climatology, Volume 46, Issue 5, April 2026.
The ability to predict climate fluctuations at seasonal timescales offers significant socio‐economic benefits. However, limited understanding of predictability mechanisms and model errors hinders forecast quality. Recent research has improved forecasting systems and data quality.
Gualdi Silvio, Javier García‐Serrano, Constantin Ardilouze, Silvia Terzago, Veronica Torralba, Wafae Badi, Lauriane Batté, Fatima Driouech, Kristina Fröhlich, Ernesto Rodriguez Camino, Esteban Rodriguez Guisado, Massimiliano Pasqui, Andrea Toreti   +12 more
wiley   +1 more source

Seasonal winter forecasts and the stratosphere [PDF]

, 2016
Published© 2016 Royal Meteorological Society. We investigate seasonal forecasts of the winter North Atlantic Oscillation (NAO) and their relationship with the stratosphere. Climatological frequencies of sudden stratospheric warming (SSW) and strong polar
Baldwin, MP, Brookshaw, A, Butler, AH, Dunstone, N, Eade, R, Gordon, M, Karpechko, AY, Maclachlan, C, Martin, N, Scaife, AA, Smith, D   +10 more
core   +1 more source

Satellite Reentry Predictions During Sudden Stratospheric Warmings

Space Weather, Volume 24, Issue 4, April 2026.
Abstract Prediction of uncontrolled satellite reentry time and trajectory are essential to avoid damages to human being and properties over land. Reentry time and trajectory are largely controlled by aerodynamic drag and mass neutral density below 200 km.
Jia Yue, Sean Bruinsma, Jack Wang, Nicholas Pedatella, Wandi Yu, Jean‐Charles Marty, Maria Kuznetsova   +6 more
wiley   +1 more source

Observational Evidence of Distinct Excitation Pathways for Migrating and Non-Migrating Tides in the Mesosphere-Lower Thermosphere During the 2021 Sudden Stratospheric Warming

Atmosphere
We investigate the excitation and variability of migrating and non-migrating diurnal and semi-diurnal tides in the mesosphere and lower thermosphere (MLT) during the 2021 Northern Hemisphere sudden stratospheric warming (SSW).
Reuben Acheampong Asamoah, Gizaw Mengistu Tsidu, Gemechu Fanta Garuma, Leonard Kofitse Amekudzi   +3 more
doaj   +1 more source

The 2009–2010 Arctic stratospheric winter – general evolution, mountain waves and predictability of an operational weather forecast model [PDF]

Atmospheric Chemistry and Physics, 2012
The relatively warm 2009–2010 Arctic winter was an exceptional one as the North Atlantic Oscillation index attained persistent extreme negative values. Here, selected aspects of the Arctic stratosphere during this winter inspired by the analysis of the ...
A. Dörnbrack, M. C. Pitts, L. R. Poole, Y. J. Orsolini, K. Nishii, H. Nakamura   +5 more
doaj   +1 more source

Assessing Subseasonal Predictions of Stratosphere‐Troposphere Coupling of GraphCast

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 6, 28 March 2026.
Abstract The rapid development of artificial intelligence weather forecasting models (AIWFMs) has revolutionized weather prediction. GraphCast, a leading AIWFM, outperforms state‐of‐the‐art physics‐based numerical models at the surface and in the lower troposphere.
Zheng Wu
wiley   +1 more source

Influence of High Latitude Sudden Stratospheric Warming on Tropical Weather: Observations From a 205 MHz Stratosphere Troposphere Radar and Surface Meteorological Parameters

Earth and Space Science, 2021
The study illustrates the evidence of dynamical coupling between the high‐latitude sudden stratospheric warming (SSW) events that occurred in three consecutive winter seasons and the concomitant changes in the wind pattern in the lower stratosphere and ...
R. Remya, M. G. Manoj, V. Rakesh, K. Mohanakumar, C. Sivan   +4 more
doaj   +1 more source

The role of convective overshooting clouds in tropical stratosphere-troposphere dynamical coupling [PDF]

, 2015
International audienceThis 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 ...
Claud, Chantal, Eguchi, N., Funatsu, Beatriz M., Kodera, K.   +3 more
core   +5 more sources