Anomalous quasi-stationary planetary waves over the Antarctic region in 1988 and 2002
Anomalies in the Antarctic total ozone and amplitudes of the quasi-stationary planetary waves in the lower stratosphere temperature during the winter and spring of 1988 and 2002 have been compared. Westward displacement of the quasi-stationary wave (QSW) extremes by 50°–70&d...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2008-05-01
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| Series: | Annales Geophysicae |
| Online Access: | https://www.ann-geophys.net/26/1101/2008/angeo-26-1101-2008.pdf |
| _version_ | 1818583652052762624 |
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| author | A. V. Grytsai O. M. Evtushevsky G. P. Milinevsky |
| author_facet | A. V. Grytsai O. M. Evtushevsky G. P. Milinevsky |
| author_sort | A. V. Grytsai |
| collection | DOAJ |
| description | Anomalies in the Antarctic total ozone and amplitudes of the quasi-stationary
planetary waves in the lower stratosphere temperature during the winter and
spring of 1988 and 2002 have been compared. Westward displacement of the
quasi-stationary wave (QSW) extremes by 50°–70° relative to the
preceding years of the strong stratospheric polar vortex in 1987 and 2001,
respectively, was observed. A dependence of the quasi-stationary wave ridge
and trough positions on the strength of the westerly zonal wind in the lower
stratosphere is shown. Comparison of the QSW amplitude in the lower
stratosphere temperature in July and August shows that the amplitude
distribution with latitude in August could be considered as a possible
indication of the future anomalous warming in Antarctic spring. In August
2002, the QSW amplitude of 10 K at the edge region of the polar vortex (60° S–65° S)
preceded the major warming in September, whereas in August
1988, the highest 7 K amplitude at 55° S preceded the large warming in the
next months. These results suggest that the peak value of the lower
stratosphere temperature QSW amplitude and the peak latitudinal position in
late winter can influence the southern polar vortex strength in spring. |
| first_indexed | 2024-12-16T08:08:41Z |
| format | Article |
| id | doaj.art-3c6381ee9fc14eb08075794c4b226523 |
| institution | Directory Open Access Journal |
| issn | 0992-7689 1432-0576 |
| language | English |
| last_indexed | 2024-12-16T08:08:41Z |
| publishDate | 2008-05-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Annales Geophysicae |
| spelling | doaj.art-3c6381ee9fc14eb08075794c4b2265232022-12-21T22:38:24ZengCopernicus PublicationsAnnales Geophysicae0992-76891432-05762008-05-01261101110810.5194/angeo-26-1101-2008Anomalous quasi-stationary planetary waves over the Antarctic region in 1988 and 2002A. V. Grytsai0O. M. Evtushevsky1G. P. Milinevsky2National Taras Shevchenko University of Kyiv, UkraineNational Taras Shevchenko University of Kyiv, UkraineNational Taras Shevchenko University of Kyiv, UkraineAnomalies in the Antarctic total ozone and amplitudes of the quasi-stationary planetary waves in the lower stratosphere temperature during the winter and spring of 1988 and 2002 have been compared. Westward displacement of the quasi-stationary wave (QSW) extremes by 50°–70° relative to the preceding years of the strong stratospheric polar vortex in 1987 and 2001, respectively, was observed. A dependence of the quasi-stationary wave ridge and trough positions on the strength of the westerly zonal wind in the lower stratosphere is shown. Comparison of the QSW amplitude in the lower stratosphere temperature in July and August shows that the amplitude distribution with latitude in August could be considered as a possible indication of the future anomalous warming in Antarctic spring. In August 2002, the QSW amplitude of 10 K at the edge region of the polar vortex (60° S–65° S) preceded the major warming in September, whereas in August 1988, the highest 7 K amplitude at 55° S preceded the large warming in the next months. These results suggest that the peak value of the lower stratosphere temperature QSW amplitude and the peak latitudinal position in late winter can influence the southern polar vortex strength in spring.https://www.ann-geophys.net/26/1101/2008/angeo-26-1101-2008.pdf |
| spellingShingle | A. V. Grytsai O. M. Evtushevsky G. P. Milinevsky Anomalous quasi-stationary planetary waves over the Antarctic region in 1988 and 2002 Annales Geophysicae |
| title | Anomalous quasi-stationary planetary waves over the Antarctic region in 1988 and 2002 |
| title_full | Anomalous quasi-stationary planetary waves over the Antarctic region in 1988 and 2002 |
| title_fullStr | Anomalous quasi-stationary planetary waves over the Antarctic region in 1988 and 2002 |
| title_full_unstemmed | Anomalous quasi-stationary planetary waves over the Antarctic region in 1988 and 2002 |
| title_short | Anomalous quasi-stationary planetary waves over the Antarctic region in 1988 and 2002 |
| title_sort | anomalous quasi stationary planetary waves over the antarctic region in 1988 and 2002 |
| url | https://www.ann-geophys.net/26/1101/2008/angeo-26-1101-2008.pdf |
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