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CLOUDS OF NEPTUNE AND URANUS Sushil K. Atreya and Ah-San Wong
 

Summary: CLOUDS OF NEPTUNE AND URANUS
Sushil K. Atreya and Ah-San Wong
Department of Atmospheric, Oceanic, and Space Sciences, University of Michigan, Ann Arbor, MI 48109-2143, USA,
Email: atreya@umich.edu, aswong@umich.edu
Proceedings, International Planetary Probe Workshop, NASA Ames, 2004, NASA CP-2004-213456, 2004.
ABSTRACT
We present results on the bases and concentrations of
methane ice, ammonia ice, ammonium hydrosulfide-
solid, water ice, and aqueous-ammonia solution
("droplet") clouds of Neptune and Uranus, based on an
equilibrium cloud condensation model. Due to their
similar p-T structures, the model results for Neptune
and Uranus are similar. Assuming 3050 solar
enhancement for the condensibles species, as expected
from formation models, we find that the base of the
droplet cloud is at the 370 bars for 30 solar, and at 500
bars for 50 solar cases. Despite this, entry probes need
to be deployed to only 50100 bars to obtain all the
critical information needed to constrain models of the
formation of these planets and their atmospheres.

  

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

 

Collections: Physics