Another look at atmospheric dynamics on Titan and some of its general consequences

Details Another look at atmospheric dynamics on Titan and some of its general consequences Another look at atmospheric dynamics on Titan and some of its general consequences

Jan 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975icar...24...70g&link_type=abstract

Icarus, vol. 24, Jan. 1975, p. 70-75; Comment, p. 76, 77.

Physics

7

Astronomical Models, Atmospheric Circulation, Atmospheric Temperature, Planetary Atmospheres, Titan, Wind Velocity, Atmospheric Models, Atmospheric Physics, Atmospheric Pressure, Similarity Theorem, Temperature Distribution, Venus Atmosphere

Scientific paper

Mean wind velocities (U) and horizontal temperature differences are estimated for the Titan atmosphere using the similarity theory of the author. It is found that U is of order 1 m/sec and the horizontal temperature difference is about 0.1 K. The last value agrees with its estimate by Leovy and Pollack (1973); however the values of U are an order of magnitude less. It is found that the circulation models developed in Leovy and Pollack overestimate considerably the atmospheric efficiency in transformation of solar energy into the kinetic energy of motions. Possible reasons for such an overestimate are discussed. It is concluded that the efficiency coefficient is a very sensitive characteristic of a circulation regime and that its determination is an efficient means for checking the correspondence of various circulation models with reality. It is noted that the analogy between the Titan and Venus atmospheric circulations might be a very close one.

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