Low-latitude Temperatures, Pressures, and Winds on Saturn from Cassini Radio Occultations

Details Low-latitude Temperatures, Pressures, and Winds on Saturn from Cassini Radio Occultations Low-latitude Temperatures, Pressures, and Winds on Saturn from Cassini Radio Occultations

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agufm.p11c0128f&link_type=abstract

American Geophysical Union, Fall Meeting 2005, abstract #P11C-0128

Computer Science

Sound

3346 Planetary Meteorology (5445, 5739), 5704 Atmospheres (0343, 1060), 6275 Saturn

Scientific paper

We present results from 12 ingress and egress soundings done within 10 degrees of Saturn's equator. Above the 100-mbar level, near the tropopause, the vertical profiles of temperature are marked by undulatory structure that may be associated with vertically propagating waves. Below the 200-mbar level, in the upper troposphere, the vertical profiles are smoother, and the overall trend of temperatures is to increase away from the equator. This implies a decay of the zonal winds with altitude. The zonal winds can actually be inferred directly from the meridional gradient in pressure, without the need of a boundary condition on the winds. We summarize results of these calculations. This is of interest because recent cloud tracking studies have indicated lower equatorial winds than found earlier, but whether this indicates a real change in the winds at a given altitude or a change in the altitudes of the features tracked is controversial.

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