Other
Scientific paper
Dec 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agufmsa42a..06f&link_type=abstract
American Geophysical Union, Fall Meeting 2001, abstract #SA42A-06
Other
3384 Waves And Tides
Scientific paper
Planetary atmospheres are rotating stratified fluids, and thus support a variety of wave motions. Waves often represent an important mechanism for transporting energy and momentum from one point to another in an atmosphere. Gravity or buoyancy waves are excited in lower atmospheres by flow over topography, convective activity, and shear instabilities. Periodic absorption of solar radiation forces thermal tides at subharmonics of a solar day. Longer-period waves can be excited by instabilities in the mean flow, by temporal variations in convective activity (latent heating), and sometimes arise as resonant atmospheric oscillations. Many waves are capable of propagating to higher altitudes where they undergo dissipation and deposit heat and momentum into the mean flow. There exists a degree of similarity between the types of waves that exist in the atmospheres of the so-called terrestrial planets, Earth, Mars and Venus, and how waves serve to determine the mean structures and variability of these planetary atmospheres. The purpose of this review is to form a comparative planetary perspective on the role of waves in determining the thermal and wind structures of the atmospheres of the terrestrial planets from the surface through the thermosphere. Outstanding questions and strategies for their resolution in the foreseeable future are formulated.
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