Multiscale numerical sensitivity simulations of a mesoscale gravity‐wave event
Quarterly Journal of the Royal Meteorological Society, EarlyView.High‐resolution WRF simulations of the February 14–15, 1992 STORM‐FEST event show that mesoscale gravity‐wave genesis occurs via geostrophic adjustment within an upper‐level unbalanced jet, while wave ducting governs maintenance. High‐resolution (1 km), improved physical parameterization, and targeted sensitivity simulations demonstrate that upstream ...
Rajan Bhandari +2 more
wiley +1 more source
Observationally derived transport diagnostics for the lowermost stratosphere and their application to the GMI chemistry and transport model [PDF]
Atmospheric Chemistry and Physics, 2007 Transport from the surface to the lowermost stratosphere (LMS) can occur on timescales of a few months or less, making it possible for short-lived tropospheric pollutants to influence stratospheric composition and chemistry.
S. E. Strahan, B. N. Duncan, P. Hoor
doaj
Evaluation and assimilation of Arctic Weather Satellite data in the AROME‐Arctic forecast system
Quarterly Journal of the Royal Meteorological Society, EarlyView.The Arctic Weather Satellite (AWS), launched in August 2024, is a prototype for the future EPS–Sterna constellation of small satellites carrying an innovative microwave sounder. We present the first assessment of AWS in the regional AROME‐Arctic numerical weather prediction system, covering post‐launch calibration results and the impact of AWS ...
Stéphanie Guedj +2 more
wiley +1 more source
Diversity of Stratospheric Error Growth Across Subseasonal Prediction Systems
Geophysical Research LettersThe stratosphere has previously been shown to be a significant source of subseasonal tropospheric predictability. The ability of ensemble prediction systems to appropriately exploit this depends on their ability to reproduce the statistical properties of
R. W. Lee, A. J. Charlton‐Perez
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Rare Lightning and Convection Characteristics During Two Successive Tornadoes in Southern China
High Voltage, EarlyView.ABSTRACT Systematic investigations into lightning characteristics of tornado storms in China remain scarce. This study comprehensively analyses rare lightning behaviour and overshooting top characteristics for two successive tornadoes during a long‐lived supercell in southern China on 27 April 2024.
Fengquan Li +9 more
wiley +1 more source
A global non-hydrostatic model study of a downward coupling through the tropical tropopause layer during a stratospheric sudden warming [PDF]
Atmospheric Chemistry and Physics, 2015 The dynamical coupling process between the stratosphere and troposphere in the tropical tropopause layer (TTL) during a~stratospheric sudden warming (SSW) in boreal winter was investigated using simulation data from a global non-hydrostatic model (NICAM)
N. Eguchi, K. Kodera, T. Nasuno
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Meridional Wind in the Upper Stratosphere: A Source of Winter NAO Predictability
Geophysical Research LettersImprovement of subseasonal to seasonal North Atlantic winter forecasting requires better prediction of the North Atlantic Oscillation (NAO), the dominant mode of variability in the Northern Hemisphere. Despite recent research demonstrating the importance
Elizabeth Collingwood +6 more
doaj +1 more source
The tropospheric response to zonally asymmetric momentum torques: implications for the downward response to wave reflection and SSW events [PDF]
Weather and Climate DynamicsThe role of zonal structure in the stratospheric polar vortex for the surface response to weak vortex states and concurrently occurring wave reflection events is isolated using an intermediate-complexity moist general circulation model.
W. Ning +5 more
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Modulation of Stratosphere‐to‐Troposphere Transport of Ozone by North Pacific Weather Patterns
Geophysical Research Letters, Volume 53, Issue 16, 28 August 2026.Abstract Stratosphere‐to‐troposphere transport (STT) of ozone is a major natural source of tropospheric ozone and is tightly linked to both stratospheric and tropospheric circulations. However, the complex interactions of drivers make it challenging to understand the subseasonal variability of STT.
Jaewon Lee, Yutian Wu, Simon H. Lee
wiley +1 more source
Intraseasonal Linkages of Winter Surface Air Temperature Between Eurasia and North America
Geophysical Research LettersWintertime temperature extremes sometimes show a continental linkage between Eurasia and North America (NA), but whether these connections are coincidental or dynamically robust remains unclear.
Xiaocen Shen +3 more
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