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| Titel |
Large-scale planetary disturbances in stratospheric temperature at high-latitudes in the southern summer hemisphere |
| VerfasserIn |
M. G. Shepherd, T. Tsuda |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 8, no. 24 ; Nr. 8, no. 24 (2008-12-17), S.7557-7570 |
| Datensatznummer |
250006518
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| Publikation (Nr.) |
 copernicus.org/acp-8-7557-2008.pdf |
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| Zusammenfassung |
| The global structure and propagation of large-scale (periods >5 days)
waves in the Southern Hemisphere summer (December 2006–February 2007) at
60° S–75° S latitude are examined using temperature data from GPS
radio occultation measurements by COSMIC/FORMOSAT 3 satellite constellation
at 20 km and 30 km altitude. Spectral analysis has revealed eastward
propagating planetary scale perturbations with wavenumbers 1 and 2 and
periods of 10, 16 and 23 days, and stationary waves with wavenumbers 1 and
2. The results obtained show a very dynamically active Antarctic summer
stratosphere. The novel aspect of the work is in the use of the GPS COSMIC
data providing multiple local times each day, thus allowing large-scale wave
analysis at high Southern latitudes and revealing planetary wave activity
not normally observed in summer, but more consistent with late winter and
spring conditions in the stratosphere. |
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