A Lagrangian study of the Antarctic polar vortex.
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/m^3) and isentropic surfaces (470 K)...
Published in: | Journal of Geophysical Research: Atmospheres |
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Language: | English |
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1997
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Online Access: | http://hdl.handle.net/11587/330033 https://doi.org/10.1029/96JD03377 http://www.agu.org/pubs/crossref/1997/96JD03377.shtml |
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ftunivsalento:oai:iris.unisalento.it:11587/330033 2024-04-14T08:03:00+00:00 A Lagrangian study of the Antarctic polar vortex. PAPARELLA, Francesco A. Babiano C. Basdevant A. Provenzale P. Tanga Paparella, Francesco A., Babiano C., Basdevant A., Provenzale P., Tanga 1997 STAMPA http://hdl.handle.net/11587/330033 https://doi.org/10.1029/96JD03377 http://www.agu.org/pubs/crossref/1997/96JD03377.shtml eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:A1997WR43300010 volume:102 firstpage:6765 lastpage:6773 numberofpages:9 journal:JOURNAL OF GEOPHYSICAL RESEARCH http://hdl.handle.net/11587/330033 doi:10.1029/96JD03377 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-0031426942 http://www.agu.org/pubs/crossref/1997/96JD03377.shtml atmospheric dynamic polar vortex stratosphere info:eu-repo/semantics/article 1997 ftunivsalento https://doi.org/10.1029/96JD03377 2024-03-21T18:06:30Z 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/m^3) and isentropic surfaces (470 K) is considered. A new definition of the vortex edge, identified as the maximum of the kinetic energy is compared with the definition based on the maximum gradient of Ertel potential vorticity. Using the kinetic energy criterion, we study the permeability of the polar vortex in the framework of the launch strategy of the Stratospheric Eole (Strateole) polar ozone experiment. We compare the dynamics of balloons launched from the latitudes corresponding to three different possible launching sites for the Strateole experiment, and we provide a quantitative estimate of the probability that a passive tracer may cross the vortex edge, confirming the strong impermeability of the polar vortex to inward and outward particle motion. Article in Journal/Newspaper Antarc* Antarctic Università del Salento: CINECA IRIS Antarctic The Antarctic Journal of Geophysical Research: Atmospheres 102 D6 6765 6773 |
institution |
Open Polar |
collection |
Università del Salento: CINECA IRIS |
op_collection_id |
ftunivsalento |
language |
English |
topic |
atmospheric dynamic polar vortex stratosphere |
spellingShingle |
atmospheric dynamic polar vortex stratosphere PAPARELLA, Francesco A. Babiano C. Basdevant A. Provenzale P. Tanga A Lagrangian study of the Antarctic polar vortex. |
topic_facet |
atmospheric dynamic polar vortex stratosphere |
description |
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/m^3) and isentropic surfaces (470 K) is considered. A new definition of the vortex edge, identified as the maximum of the kinetic energy is compared with the definition based on the maximum gradient of Ertel potential vorticity. Using the kinetic energy criterion, we study the permeability of the polar vortex in the framework of the launch strategy of the Stratospheric Eole (Strateole) polar ozone experiment. We compare the dynamics of balloons launched from the latitudes corresponding to three different possible launching sites for the Strateole experiment, and we provide a quantitative estimate of the probability that a passive tracer may cross the vortex edge, confirming the strong impermeability of the polar vortex to inward and outward particle motion. |
author2 |
Paparella, Francesco A., Babiano C., Basdevant A., Provenzale P., Tanga |
format |
Article in Journal/Newspaper |
author |
PAPARELLA, Francesco A. Babiano C. Basdevant A. Provenzale P. Tanga |
author_facet |
PAPARELLA, Francesco A. Babiano C. Basdevant A. Provenzale P. Tanga |
author_sort |
PAPARELLA, Francesco |
title |
A Lagrangian study of the Antarctic polar vortex. |
title_short |
A Lagrangian study of the Antarctic polar vortex. |
title_full |
A Lagrangian study of the Antarctic polar vortex. |
title_fullStr |
A Lagrangian study of the Antarctic polar vortex. |
title_full_unstemmed |
A Lagrangian study of the Antarctic polar vortex. |
title_sort |
lagrangian study of the antarctic polar vortex. |
publishDate |
1997 |
url |
http://hdl.handle.net/11587/330033 https://doi.org/10.1029/96JD03377 http://www.agu.org/pubs/crossref/1997/96JD03377.shtml |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:A1997WR43300010 volume:102 firstpage:6765 lastpage:6773 numberofpages:9 journal:JOURNAL OF GEOPHYSICAL RESEARCH http://hdl.handle.net/11587/330033 doi:10.1029/96JD03377 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-0031426942 http://www.agu.org/pubs/crossref/1997/96JD03377.shtml |
op_doi |
https://doi.org/10.1029/96JD03377 |
container_title |
Journal of Geophysical Research: Atmospheres |
container_volume |
102 |
container_issue |
D6 |
container_start_page |
6765 |
op_container_end_page |
6773 |
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1796319334347309056 |