Antarctic air over New Zealand following vortex breakdown in 1998
An ozonesonde profile over the Network for Detection of Stratospheric Change (NDSC) site at Lauder (45.0° S, 169.7° E), New Zealand, for 24 December 1998 showed atypically low ozone centered around 24 km altitude (600 K potential temperature). The origin of the anomaly is explained using reverse dom...
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ftunivreading:oai:centaur.reading.ac.uk:27815 2024-09-15T17:41:37+00:00 Antarctic air over New Zealand following vortex breakdown in 1998 Ajtic, J. Connor, B. J. Randall, C. E. Lawrence, B. N. Bodecker, G. E. Rosenfeld, J. E. Heuff, D. N. 2003 https://centaur.reading.ac.uk/27815/ unknown Copernicus Publications Ajtic, J., Connor, B. J., Randall, C. E., Lawrence, B. N. <https://centaur.reading.ac.uk/view/creators/90004178.html> orcid:0000-0001-9262-7860 , Bodecker, G. E., Rosenfeld, J. E. and Heuff, D. N. (2003) Antarctic air over New Zealand following vortex breakdown in 1998. Annales Geophysicae, 21 (11). pp. 2175-2183. ISSN 0992-7689 doi: https://doi.org/10.5194/angeo-21-2175-2003 <https://doi.org/10.5194/angeo-21-2175-2003> Article PeerReviewed 2003 ftunivreading https://doi.org/10.5194/angeo-21-2175-2003 2024-06-25T14:51:23Z An ozonesonde profile over the Network for Detection of Stratospheric Change (NDSC) site at Lauder (45.0° S, 169.7° E), New Zealand, for 24 December 1998 showed atypically low ozone centered around 24 km altitude (600 K potential temperature). The origin of the anomaly is explained using reverse domain filling (RDF) calculations combined with a PV/O3 fitting technique applied to ozone measurements from the Polar Ozone and Aerosol Measurement (POAM) III instrument. The RDF calculations for two isentropic surfaces, 550 and 600 K, show that ozone-poor air from the Antarctic polar vortex reached New Zealand on 24–26 December 1998. The vortex air on the 550 K isentrope originated in the ozone hole region, unlike the air on 600 K where low ozone values were caused by dynamical effects. High-resolution ozone maps were generated, and their examination shows that a vortex remnant situated above New Zealand was the cause of the altered ozone profile on 24 December. The maps also illustrate mixing of the vortex filaments into southern midlatitudes, whereby the overall mid-latitude ozone levels were decreased. Article in Journal/Newspaper Antarc* Antarctic CentAUR: Central Archive at the University of Reading Annales Geophysicae 21 11 2175 2183 |
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Open Polar |
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CentAUR: Central Archive at the University of Reading |
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ftunivreading |
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unknown |
description |
An ozonesonde profile over the Network for Detection of Stratospheric Change (NDSC) site at Lauder (45.0° S, 169.7° E), New Zealand, for 24 December 1998 showed atypically low ozone centered around 24 km altitude (600 K potential temperature). The origin of the anomaly is explained using reverse domain filling (RDF) calculations combined with a PV/O3 fitting technique applied to ozone measurements from the Polar Ozone and Aerosol Measurement (POAM) III instrument. The RDF calculations for two isentropic surfaces, 550 and 600 K, show that ozone-poor air from the Antarctic polar vortex reached New Zealand on 24–26 December 1998. The vortex air on the 550 K isentrope originated in the ozone hole region, unlike the air on 600 K where low ozone values were caused by dynamical effects. High-resolution ozone maps were generated, and their examination shows that a vortex remnant situated above New Zealand was the cause of the altered ozone profile on 24 December. The maps also illustrate mixing of the vortex filaments into southern midlatitudes, whereby the overall mid-latitude ozone levels were decreased. |
format |
Article in Journal/Newspaper |
author |
Ajtic, J. Connor, B. J. Randall, C. E. Lawrence, B. N. Bodecker, G. E. Rosenfeld, J. E. Heuff, D. N. |
spellingShingle |
Ajtic, J. Connor, B. J. Randall, C. E. Lawrence, B. N. Bodecker, G. E. Rosenfeld, J. E. Heuff, D. N. Antarctic air over New Zealand following vortex breakdown in 1998 |
author_facet |
Ajtic, J. Connor, B. J. Randall, C. E. Lawrence, B. N. Bodecker, G. E. Rosenfeld, J. E. Heuff, D. N. |
author_sort |
Ajtic, J. |
title |
Antarctic air over New Zealand following vortex breakdown in 1998 |
title_short |
Antarctic air over New Zealand following vortex breakdown in 1998 |
title_full |
Antarctic air over New Zealand following vortex breakdown in 1998 |
title_fullStr |
Antarctic air over New Zealand following vortex breakdown in 1998 |
title_full_unstemmed |
Antarctic air over New Zealand following vortex breakdown in 1998 |
title_sort |
antarctic air over new zealand following vortex breakdown in 1998 |
publisher |
Copernicus Publications |
publishDate |
2003 |
url |
https://centaur.reading.ac.uk/27815/ |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
Ajtic, J., Connor, B. J., Randall, C. E., Lawrence, B. N. <https://centaur.reading.ac.uk/view/creators/90004178.html> orcid:0000-0001-9262-7860 , Bodecker, G. E., Rosenfeld, J. E. and Heuff, D. N. (2003) Antarctic air over New Zealand following vortex breakdown in 1998. Annales Geophysicae, 21 (11). pp. 2175-2183. ISSN 0992-7689 doi: https://doi.org/10.5194/angeo-21-2175-2003 <https://doi.org/10.5194/angeo-21-2175-2003> |
op_doi |
https://doi.org/10.5194/angeo-21-2175-2003 |
container_title |
Annales Geophysicae |
container_volume |
21 |
container_issue |
11 |
container_start_page |
2175 |
op_container_end_page |
2183 |
_version_ |
1810487846037880832 |