Physics
Scientific paper
Dec 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008acp.....8.7557s&link_type=abstract
Atmospheric Chemistry and Physics, Volume 8, Issue 24, 2008, pp.7557-7570
Physics
7
Scientific paper
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.
Shepherd Marianna G.
Tsuda Teruhisa
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