Results 21 to 30 of about 13,490 (260)
A Lagrangian study of the Antarctic polar vortex [PDF]
Journal of Geophysical Research: Atmospheres, 1997 We study the dynamics of passively advected tracers in the Antarctic polar vortex, using the wind fields provided by the European Centre for Medium‐Range Weather Forecasts' (ECMWF) analysis from August to October 1993. Advection on both isopycnal (0.0938 kg/m3) and isentropic surfaces (470°K) is considered.
PAPARELLA, Francesco +4 more
openaire +2 more sources
Hyperbolic lines and the stratospheric polar vortex [PDF]
Chaos: An Interdisciplinary Journal of Nonlinear Science, 2002 The necessary and sufficient conditions for Lagrangian hyperbolicity recently derived in the literature are reviewed in the light of older concepts of effective local rotation in strain coordinates. In particular, we introduce the simple interpretation of the necessary condition as a constraint on the local angular displacement in strain coordinates ...
Koh, T.-Y., Legras, B.
openaire +4 more sources
Advances in Meteorology, 2017 As the most prominent feature of the polar stratosphere, polar vortex results in widespread changes in the climate system, especially in the ozone variation.
Yu Zhang, Jing Li, Libo Zhou
doaj +1 more source
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.
Kamilya Yessimbet +3 more
doaj +1 more source
Signature of the stratosphere–troposphere coupling on recent record-breaking Antarctic sea-ice anomalies [PDF]
The Cryosphere, 2023 In February 2023, the sea-ice extent around Antarctica dropped to 1.79×106 km2, setting a satellite-era record low for the second straight year. Recent records stress the need for further research into the factors behind record-breaking Antarctic sea-ice
R. R. Cordero +11 more
doaj +1 more source
Observation and simulation of wave breaking in the southern hemispheric stratosphere during VORCORE [PDF]
Annales Geophysicae, 2013 An interesting occurrence of a Rossby wave breaking event observed during the VORCORE experiment is presented and explained. Twenty-seven balloons were launched inside the Antarctic polar vortex.
M. Moustaoui, H. Teitelbaum, A. Mahalov
doaj +1 more source
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
Update of the Polar SWIFT model for polar stratospheric ozone loss (Polar SWIFT version 2) [PDF]
Geoscientific Model Development, 2017 The Polar SWIFT model is a fast scheme for calculating the chemistry of stratospheric ozone depletion in polar winter. It is intended for use in global climate models (GCMs) and Earth system models (ESMs) to enable the simulation of mutual ...
I. Wohltmann, R. Lehmann, M. Rex
doaj +1 more source
Order–Disorder Transitions in a Polar Vortex Lattice [PDF]
Advanced Functional Materials, 2022 AbstractOrder–disorder transitions are widely explored in various vortex structures in condensed matter physics, that is, in the type‐II superconductors and Bose–Einstein condensates. In this study, the ordering of the polar vortex phase in [Pb(Zr0.4Ti0.6)O3]n/(SrTiO3)n (PZT/STO) superlattices is investigated through phase‐field simulations.
Zhou, Linming +11 more
openaire +5 more sources
The joint effect of mid-latitude winds and the westerly quasi-biennial oscillation phase on the Antarctic stratospheric polar vortex and ozone [PDF]
Atmospheric Chemistry and PhysicsThe quasi-biennial oscillation (QBO) dynamically interacts with the extratropical atmosphere. However, the relationship between the QBO in austral winter and the Antarctic stratospheric polar vortex in spring remains unclear.
Z. Wang, J. Zhang, S. Zhao, D. Li
doaj +1 more source