Other
Scientific paper
Dec 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufmsa32a..04l&link_type=abstract
American Geophysical Union, Fall Meeting 2010, abstract #SA32A-04
Other
[0341] Atmospheric Composition And Structure / Middle Atmosphere: Constituent Transport And Chemistry, [3369] Atmospheric Processes / Thermospheric Dynamics, [3389] Atmospheric Processes / Tides And Planetary Waves
Scientific paper
Observations suggest that water plumes from space shuttle undergo fast meridional transport in the lower thermosphere (up to ˜45 ms-1). From scale analysis and from numerical experiments, it is straightforward to demonstrate that the mean merdional wind cannot be this large. On the other hand, satellite observations show that even though the plumes are diffused over several days, there is clearly a large bulk transport component in the north and south direction. Therefore, we are compelled to study the role of wind perturbations due to tides, planetary waves and gravity waves, which attain large amplitudes in the MLT region (Liu, 2007). In that study, trajectory calculations using model winds are performed to investigate the role of these waves. Based on that work, we argue that the shuttle plume observations reveal the important, but probably under-appreciated role, of the large amplitude waves in the MLT region.
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