Thermal Tides in Pluto's Atmosphere

Details Thermal Tides in Pluto's Atmosphere Thermal Tides in Pluto's Atmosphere

Sep 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009dps....41.4703t&link_type=abstract

American Astronomical Society, DPS meeting #41, #47.03

Astronomy and Astrophysics

Astronomy

Scientific paper

Stellar occultations have shown that vertical profiles of density fluctuations in the atmosphere of Pluto typically show wave-like structure with an amplitude of a few percent and vertical wavelengths of several kilometers. Solar-induced sublimation "breathing" from surface nitrogen frost patches leads to a periodic forcing of the atmosphere from the surface which induces tidal oscillations. We will present the results of our tidal calculations of the response of Pluto's atmosphere which show a global-scale wave-like density structure capable of explaining the observations. The atmospheric response is a combination of eastward and westward migrating tides, together with a zonally symmetric meridionally propagating mode. Calculated vertical wavelengths and amplitudes are similar to observations.

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