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ICARUS 88, 448-464 (1990) Reanalysis of Voyager 2 UVS Occultations at Uranus: Hydrocarbon
 

Summary: ICARUS 88, 448-464 (1990)
Reanalysis of Voyager 2 UVS Occultations at Uranus: Hydrocarbon
Mixing Ratios in the Equatorial Stratosphere
J. BISHOP AND S. K. ATREYA
Department qf'Atmospheric, Oceanic and Space Sciences, University oj' Michigan.
Ann Arbor, Michigan 48109-2143
F. HERBERT
Lunar and Planetary Laboratory West. University of Arizona, Tucson, Arizona 85721
AND
P. ROMAN1
Science Systems and Applications, Inc., Seabrook, Maryland 20706
Received December 5, 1989; revised July 2, 1990
Application of noise filtering and inversion techniques to single-channel UVS lightcurves
obtained during the Voyager 2 solar occultation at Uranus has yielded tighter constraints
on the structure and composition of the upper equatorial stratosphere at the time of the
encounter. Specifically, atmospheric pressure and temperature profiles in the altitude
region bracketted by total number densities 2 X 10'" cmY3 and 5 x 1Or6 crne3 have been
derived, based on the observed Hz Rayleigh scattering opacity profiles (wavelengths >
153 nm) with an assumed hehum mixing ratio of 0.15: at the density level 3.3 (20.2) x
1Or6 cmm3, the pressure is 0.60 (20.01) mbar with a temperature 133 (28) K. Lightcurves

  

Source: Atreya, Sushil - Department of Atmospheric, Oceanic and Space Science, University of Michigan

 

Collections: Physics