Results 81 to 90 of about 10,278 (196)

Large Proportions of Surface Ozone and Premature Mortality Due to a Stratospheric Intrusion Event in North China

International Journal of Climatology, Volume 46, Issue 6, May 2026.
This study, by examining a typical stratospheric intrusion event that occurred in North China from 30 to 31 July 2021, found that the event led to a sharp increase in near‐surface ozone concentrations by 23 ppbv within 36 h, accounting for 40% of the total observed ozone levels, with localised peaks exceeding 30 ppbv.
Yinghan Sun, Zhicong Yin, Yijia Zhang
wiley   +1 more source

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

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

Externally‐Forced Changes to Southern Hemisphere Stratosphere‐Troposphere Coupling Variability

Earth's Future
Stratosphere‐troposphere coupling (STC) in the Southern Hemisphere (SH) occurs primarily from austral spring to summer, and the dominant mode of variability in this vertical coupling (the “STC mode”) represents the timing of the seasonal transition of ...
Amy H. Butler, Eun‐Pa Lim, Isla R. Simpson   +2 more
doaj   +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