large-scale planetary disturbances in stratospheric temperature at high-latitudes in the southern summer hemisphere

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ID: 151074
2008
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Abstract
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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shepherd2008atmosphericlarge-scale Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;M. G. Shepherd;T. Tsuda
Journal Journal of agricultural and food chemistry
Year 2008
DOI
DOI not found
URL
http://www.atmos-chem-phys.net/8/7557/2008/acp-8-7557-2008.pdf
Keywords
physicschemistry

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