Mineral dust variability in central West Antarctica associated with ozone depletion
Abstract: Here we show that mineral dust retrieved from an ice core in the central West Antarctic sector, spanning the last five decades, provides evidence that northerly air mass incursions into Antarctica, tracked by dust microparticles, have slightly declined. This result contrasts with dust in i...
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ftunivantwerpen:c:irua:102568 2023-07-16T03:53:06+02:00 Mineral dust variability in central West Antarctica associated with ozone depletion Cataldo, . Evangelista, H. Simões, J.C. Godoi, Ricardo Henrique Moreton Simmonds, I. Hollanda, M.H. Wainer, I. Aquino, F.E. Van Grieken, René 2012 pdf https://hdl.handle.net/10067/1025680151162165141 https://repository.uantwerpen.be/docman/irua/0f7719/d680aa8a.pdf eng eng info:eu-repo/semantics/altIdentifier/doi/10.5194/ACPD-12-12685-2012 info:eu-repo/semantics/openAccess 1680-7367 Atmospheric chemistry and physics discussions Chemistry info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2012 ftunivantwerpen https://doi.org/10.5194/ACPD-12-12685-2012 2023-06-26T22:16:09Z Abstract: Here we show that mineral dust retrieved from an ice core in the central West Antarctic sector, spanning the last five decades, provides evidence that northerly air mass incursions into Antarctica, tracked by dust microparticles, have slightly declined. This result contrasts with dust in ice core records reported in West/coastal Antarctica, which show significant increases to the present day. We attribute that difference, in part, to changes in the regional climate regime triggered by the ozone depletion and its consequences for the polar vortex intensity. The vortex maintains the Antarctic central region relatively isolated from mid-latitude air mass incursions with implications to the intensification of the Westerlies and to a persistent positive phase of the Southern Annular Mode. We also show that variability of the diameter of insoluble microparticles in central West Antarctica can be modeled by linear/quadratic functions of both cyclone depth (energy) and wind intensity around Antarctica. Article in Journal/Newspaper Antarc* Antarctic Antarctica ice core West Antarctica IRUA - Institutional Repository van de Universiteit Antwerpen Antarctic The Antarctic West Antarctica |
institution |
Open Polar |
collection |
IRUA - Institutional Repository van de Universiteit Antwerpen |
op_collection_id |
ftunivantwerpen |
language |
English |
topic |
Chemistry |
spellingShingle |
Chemistry Cataldo, . Evangelista, H. Simões, J.C. Godoi, Ricardo Henrique Moreton Simmonds, I. Hollanda, M.H. Wainer, I. Aquino, F.E. Van Grieken, René Mineral dust variability in central West Antarctica associated with ozone depletion |
topic_facet |
Chemistry |
description |
Abstract: Here we show that mineral dust retrieved from an ice core in the central West Antarctic sector, spanning the last five decades, provides evidence that northerly air mass incursions into Antarctica, tracked by dust microparticles, have slightly declined. This result contrasts with dust in ice core records reported in West/coastal Antarctica, which show significant increases to the present day. We attribute that difference, in part, to changes in the regional climate regime triggered by the ozone depletion and its consequences for the polar vortex intensity. The vortex maintains the Antarctic central region relatively isolated from mid-latitude air mass incursions with implications to the intensification of the Westerlies and to a persistent positive phase of the Southern Annular Mode. We also show that variability of the diameter of insoluble microparticles in central West Antarctica can be modeled by linear/quadratic functions of both cyclone depth (energy) and wind intensity around Antarctica. |
format |
Article in Journal/Newspaper |
author |
Cataldo, . Evangelista, H. Simões, J.C. Godoi, Ricardo Henrique Moreton Simmonds, I. Hollanda, M.H. Wainer, I. Aquino, F.E. Van Grieken, René |
author_facet |
Cataldo, . Evangelista, H. Simões, J.C. Godoi, Ricardo Henrique Moreton Simmonds, I. Hollanda, M.H. Wainer, I. Aquino, F.E. Van Grieken, René |
author_sort |
Cataldo, . |
title |
Mineral dust variability in central West Antarctica associated with ozone depletion |
title_short |
Mineral dust variability in central West Antarctica associated with ozone depletion |
title_full |
Mineral dust variability in central West Antarctica associated with ozone depletion |
title_fullStr |
Mineral dust variability in central West Antarctica associated with ozone depletion |
title_full_unstemmed |
Mineral dust variability in central West Antarctica associated with ozone depletion |
title_sort |
mineral dust variability in central west antarctica associated with ozone depletion |
publishDate |
2012 |
url |
https://hdl.handle.net/10067/1025680151162165141 https://repository.uantwerpen.be/docman/irua/0f7719/d680aa8a.pdf |
geographic |
Antarctic The Antarctic West Antarctica |
geographic_facet |
Antarctic The Antarctic West Antarctica |
genre |
Antarc* Antarctic Antarctica ice core West Antarctica |
genre_facet |
Antarc* Antarctic Antarctica ice core West Antarctica |
op_source |
1680-7367 Atmospheric chemistry and physics discussions |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/ACPD-12-12685-2012 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/ACPD-12-12685-2012 |
_version_ |
1771548643467198464 |