Results 21 to 30 of about 538,294 (297)

Changes in the polar vortex: Effects on Antarctic total ozone observations at various stations [PDF]

open access: yes, 2011
October mean total column ozone data from four Antarctic stations form the basis for understanding the evolution of the ozone hole since 1960. While these stations show similar emergence of the ozone hole from 1960 to 1980, the records are divergent in ...
Bodeker, G. E.   +3 more
core   +4 more sources

Evolution of the intensity and duration of the Southern Hemisphere stratospheric polar vortex edge for the period 1979–2020 [PDF]

open access: yesAtmospheric Chemistry and Physics, 2022
The intensity and position of the Southern Hemisphere stratospheric polar vortex edge is evaluated as a function of equivalent latitude over the period 1979–2020 on three isentropic levels (475, 550, and 675 K) from ECMWF ERA-Interim reanalysis.
A. Lecouffe   +3 more
doaj   +1 more source

Subunit cell-level measurement of polarization in an individual polar vortex. [PDF]

open access: yesSci Adv, 2019
We report accurates and informative measurement with subunit cell resolution for local polarization distribution in ferroelectrics.
Sun Y   +18 more
europepmc   +4 more sources

Hyperbolic lines and the stratospheric polar vortex [PDF]

open access: yesChaos: 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

Chemical observations of a polar vortex intrusion [PDF]

open access: yes, 2006
An intrusion of vortex edge air into the interior of the Arctic polar vortex was observed on the 31 January 2005 flight of the NASA DC-8 aircraft. This intrusion was identified as anomalously high values of ozone by Airborne Raman Ozone, Temperature, and
Lait, L. R.   +12 more
core   +1 more source

A Lagrangian study of the Antarctic polar vortex [PDF]

open access: yesJournal 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

EOS Microwave Limb Sounder Observations of the Antarctic Polar Vortex Breakup in 2004 [PDF]

open access: yes, 2005
Observations from the Microwave Limb Sounder (MLS) on NASA's new Aura satellite give an unprecedentedly detailed picture of the spring Antarctic polar vortex breakup throughout the stratosphere.
Waters, J. W.   +7 more
core   +1 more source

The impact of transport across the polar vortex edge on Match ozone loss estimates [PDF]

open access: yes, 2008
The Match method for the quantification of polar chemical ozone loss is investigated mainly with respect to the impact of the transport of air masses across the vortex edge.
R. Müller   +20 more
core   +2 more sources

The Relationship between Polar Vortex and Ozone Depletion in the Antarctic Stratosphere during the Period 1979–2016

open access: yesAdvances 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

A method for estimating the extent of denitrification of Arctic polar vortex air from tracer-tracer scatter plots [PDF]

open access: yes, 2002
A method for estimating the extent of denitrification of Arctic polar vortex air is proposed. Previous estimates of denitrification using tracer-tracer scatter plots have not allowed for mixing-induced changes in tracer-tracer relationships in a ...
Esler, JG   +3 more
core   +1 more source

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