Results 101 to 110 of about 10,329 (228)

Observed connection between the Madden–Julian oscillation and the upper tropospheric biennial oscillation

Environmental Research Letters
It has been found that the quasi-biennial oscillation (QBO) in the stratosphere have an important impact on the Madden Julian oscillation (MJO). In this study, we show that there is an obvious biennial oscillation in the tropical upper troposphere, which
Feiyang Wang, Tanlong Dai, Yuanyuan Han
doaj   +1 more source

Towards a More Earth‐Like Circulation in Idealized Models

Journal of Advances in Modeling Earth Systems, 2018
Idealized models are useful for the investigation of dynamical phenomena in which physical processes play a secondary role. Typically, such models employ highly idealized topography and zonally symmetric equilibrium temperatures as forcings.
Zheng Wu, Thomas Reichler
doaj   +1 more source

The impact of the state of the troposphere on the response to stratospheric heating in a simplified GCM [PDF]

, 2010
Previous studies have made use of simplified general circulation models (sGCMs) to investigate the atmospheric response to various forcings. In particular, several studies have investigated the tropospheric response to changes in stratospheric ...
Baldwin, Baldwin, Barnes, Barnes, Butler, Chan, Chen, Chen, Edmon, Gerber, Gerber, Gerber, Gerber, Gerber, Haigh, Held, Hoskins, Isla R. Simpson, Joanna D. Haigh, Kidston, Kushner, Kushner, Lee, Leith, Lorenz, Lorenz, Michael Blackburn, Polvani, Ring, Robinson, Sarah N. Sparrow, Simmons, Simpson, Son, Son, Son, Son, Song, Sparrow, Williams, Wittman   +40 more
core   +1 more source

Climatic Higher‐Order Balanced Winds Beyond Geostrophic and Gradient Wind Fields

Earth and Space Science, Volume 13, Issue 5, May 2026.
Abstract We present a novel approach to derive three‐dimensional Climatic Higher‐Order Balanced (CHOB) wind fields from thermodynamic state variables in the free troposphere and stratosphere. The CHOB method is developed for monthly synoptic‐scale wind field estimation, utilizing commonly used balanced winds (geostrophic and gradient wind) enhanced by ...
I. Nimac, J. Unegg, J. Danzer
wiley   +1 more source

Simulation of the ENSO influence on the extra-tropical middle atmosphere

Earth, Planets and Space, 2019
The impact of the El Niño Southern Oscillation (ENSO) on the Northern Hemisphere mid-winter zonal wind, temperature, and stationary planetary waves (SPWs) is evaluated using the Middle and Upper Atmosphere Model and Modern-Era Retrospective Analysis for ...
Tatiana S. Ermakova, Olga G. Aniskina, Irina A. Statnaia, Maxim A. Motsakov, Alexander I. Pogoreltsev   +4 more
doaj   +1 more source

Global Kilometer‐Scale Climate Storylines Using Spectral Nudging

Journal of Advances in Modeling Earth Systems, Volume 18, Issue 5, May 2026.
Abstract Effective climate adaptation benefits from detailed, actionable information on how specific extreme events are influenced by climate change. Here we present the first global, kilometer‐scale coupled modeling framework that enables counterfactual reconstructions of recent weather events, including extremes, in different climates.
Amal John, Sebastian Beyer, Marylou Athanase, Antonio Sánchez‐Benítez, Helge F. Goessling, Akil Hossain, Razvan Aguridan, Miguel Andrés‐Martínez, Aina Gaya‐Àvila, Suvarchal Kumar Cheedela, Philipp Geier, Rohit Ghosh, Ioan Hadade, Nikolay Koldunov, Sebastian Milinski, Matteo Nurisso, Xabier Pedruzo‐Bagazgoitia, Thomas Rackow, Irina Sandu, Dmitry Sidorenko, Jan Streffing, Emanuele Vitali, Thomas Jung   +22 more
wiley   +1 more source

Stratospheric Impacts on Weather Regimes Following the 2018 and 2019 Sudden Stratospheric Warmings

Geophysical Research Letters
Major disruptions of the stratospheric polar vortex can improve subseasonal forecast skill for surface climate, as negative North Atlantic Oscillation‐like (NAO−) states can follow sudden stratospheric warmings (SSWs).
Robert W. Lee, Andrew J. Charlton‐Perez, Simon H. Lee   +2 more
doaj   +1 more source

Capability Demonstration of a JEDI‐Based System for TEMPO Assimilation: System Description and Evaluation

Journal of Advances in Modeling Earth Systems, Volume 18, Issue 5, May 2026.
Abstract The launch of the Tropospheric Emissions: Monitoring of Pollution (TEMPO) mission in 2023 marked a new era in air quality monitoring by providing high‐frequency, geostationary observations of column NO2 across most of North America. In this study, we present the first implementation of a TEMPO NO2 data assimilation system using the Joint ...
Maryam Abdi‐Oskouei, Jérôme Barré, Shih‐Wei Wei, Sarah Lu, Ashley Griffin, Clementine Hardy Gas, Francois Hebert, Stephen Herbener, Eric Lingerfelt, Evan Parker, Christian Sampson, Steve Vahl, Fabio Diniz, Ben Johnson, Cheng Dang, Yannick Tremolet, Benjamin Ruston, Viral Shah, Emma Knowland, Ricardo Todling, Ronald Gelaro, Caroline Nowlan, Gonzalo Gonzalez Abad, Xiong Liu, Brian McDonald, Kristen Zuraski, Jeff Peischl, Caroline Womack, Laura Judd, Thomas Hanisco, Benjamin Menetrier, Cory Martin, Daniel Holdaway, Anna Shlyaeva, Dom Heinzeller, Steven Pawson, Thomas Auligne   +36 more
wiley   +1 more source

Stratospheric Variability and Trends in Models Used for the IPCC AR4 [PDF]

, 2006
Atmosphere and ocean general circulation model (AOGCM) experiments for the Intergovernmental Panel on Climate Change Fourth Assessment Report (AR4) are analyzed to better understand model variability and assess the importance of various forcing ...
Cordero, Eugene, Forster, P. M. de F.
core   +3 more sources

Decadal Changes in Wintertime Frequency of Stratospheric Northern Annular Mode Events With Downward Propagation

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract The surface climate impact of stratospheric polar vortex anomalies depends on their downward propagation (DP) into the troposphere. We find pronounced decadal variability in the winter frequency of stratospheric Northern Annular Mode (SNAM) events that exhibit DP (1951–2024).
Yang Liu, Yueyue Yu, Ming Cai, Rongcai Ren, Lijuan Chen, Donghan Wang   +5 more
wiley   +1 more source