Geophysical Research Letters, 2022 We apply a causal inference‐based framework to test and quantify previously suggested causal relationships between Northern Hemisphere blocking, upward wave‐activity fluxes and stratospheric polar vortex (SPV) variability using reanalysis data.
Albert Osso +2 more
exaly +2 more sources
A Revisit of Large-Scale Patterns in Middle Stratospheric Circulation Variations [PDF]
EntropyVariations in stratospheric atmospheric circulation significantly impact tropospheric weather and climate. Understanding these variations not only aids in better prediction of tropospheric weather and climate but also provides guidance for the ...
Ningning Tao +7 more
doaj +2 more sources
Strong polar vortex favoured intense Northern European storminess in February 2022 [PDF]
Communications Earth & EnvironmentFebruary 2022 was an unusually stormy month over Northern Europe, including three extratropical cyclones impacting the United Kingdom and Ireland within a single week. The month also experienced an exceptionally strong stratospheric polar vortex; however,
Ryan S. Williams +4 more
doaj +2 more sources
Evaluating Long-Term Variability of the Arctic Stratospheric Polar Vortex Simulated by CMIP6 Models
Remote Sensing, 2022 The Arctic stratospheric polar vortex is a key component of the climate system, which has significant impacts on surface temperatures in the mid-latitudes and polar regions.
Jiankai Zhang +2 more
exaly +3 more sources
Stratospheric wave driving events as an alternative to sudden stratospheric warmings [PDF]
Weather and Climate Dynamics, 2022 Natural variations in the strength of the northern stratospheric polar vortex, so-called polar vortex events, help to improve subseasonal-to-seasonal (S2S) predictions of winter climate.
T. Reichler, M. Jucker, M. Jucker
doaj +1 more source
How do different pathways connect the stratospheric polar vortex to its tropospheric precursors? [PDF]
Weather and Climate Dynamics, 2023 Processes involving troposphere–stratosphere coupling have been identified as important contributors to an improved subseasonal to seasonal prediction in the mid-latitudes.
R. H. Köhler, R. Jaiser, D. Handorf
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Exploring the link between austral stratospheric polar vortex anomalies and surface climate in chemistry-climate models [PDF]
Atmospheric Chemistry and Physics, 2022 Extreme events in the stratospheric polar vortex can lead to changes in the tropospheric circulation and impact the surface climate on a wide range of timescales.
N. Bergner +6 more
doaj +1 more source
Remote Sensing, 2023 Fifty years of daily ERA5 reanalysis data are employed to investigate the linkages between the strength of the stratospheric polar vortex and the tropospheric polar vortex during the boreal winter.
Lixin Han, Chunhua Shi, Dong Guo
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Quantifying stratospheric biases and identifying their potential sources in subseasonal forecast systems [PDF]
Weather and Climate Dynamics, 2022 The stratosphere can be a source of predictability for surface weather on timescales of several weeks to months. However, the potential predictive skill gained from stratospheric variability can be limited by biases in the representation of stratospheric
Z. D. Lawrence +37 more
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The effect of interactive ozone chemistry on weak and strong stratospheric polar vortex events [PDF]
Atmospheric Chemistry and Physics, 2020 Modeling and observational studies have reported effects of stratospheric ozone extremes on Northern Hemisphere spring climate. Recent work has further suggested that the coupling of ozone chemistry and dynamics amplifies the surface response to ...
J. Oehrlein +3 more
doaj +1 more source