Physics
Scientific paper
Aug 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981natur.292..693f&link_type=abstract
Nature, vol. 292, Aug. 20, 1981, p. 693-698.
Physics
137
Atmospheric Circulation, Atmospheric Temperature, Satellite Atmospheres, Titan, Annual Variations, Brightness Temperature, Eddy Viscosity, Stratosphere, Troposphere, Wind Direction, Saturn, Satellites, Titan, Atmosphere, Temperatures, Dynamics, Infrared, Brightness Temperature, Stratosphere, Winds, Zones, Models, Velocity, Eddy Effects, Heat, Transport, Observations, Data, Distribution, Flow, Radiative Transfer, Seasonal Variations, Baroclinity, Thermal Properties, Latitude, Circulation
Scientific paper
In the lower atmosphere of Titan IR brightness temperatures exhibit meridional contrast less than approximately 3 K. Seasonal variations are absent because of the large radiative time constant. In the upper stratosphere meridional contrasts are approximately 20 K, consistent with 100 m/s cyclostrophic zonal winds, and the radiative time constant is short, implying a large seasonal variation in the temperature and wind field. The absence of longitudinal thermal structure implies that zonally symmetric flows effect the meridional transport of heat. A simple model yields meridional velocities approximately 0.04 cm/s and vertical eddy viscosities approximately 1,000 sq cm/s in the lower troposphere, and meridional velocities approximately 5 cm/s in the upper stratosphere.
Conrath Barney J.
Flasar Michael F.
Samuelson Robert E.
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