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The thermal structure of Triton's atmosphere - Pre-Voyager modelsSpectral data from earth observations have indicated the presence of N2 and CH4 on Triton. This paper outlines the use of the 1-D radiative-convective model developed for Titan to calculate the current pressure of N2 and CH4 on Triton. The production of haze material is obtained by scaling down from the Titan value. Results and predictions for the Voyager Triton encounter are as follows: A N2-CH4 atmosphere on Triton is thermodynamically self consistent and would have a surface pressure of approximately 50 millibar; due to the chemically produced haze, Triton has a hot atmosphere with a temperature of approximately 130 K; Triton's troposphere is a region of saturation of the major constituent of the atmosphere, N2.
Document ID
19890062620
Document Type
Reprint (Version printed in journal)
Authors
Mckay, Christopher P. (NASA Ames Research Center Moffett Field, CA, United States)
Pollack, James B. (NASA Ames Research Center Moffett Field, CA, United States)
Zent, Aaron P. (NASA Ames Research Center Moffett Field, CA, United States)
Cruikshank, Dale P. (NASA Ames Research Center Moffett Field, CA, United States)
Courtin, Regis (Paris Observatoire, Meudon, France)
Date Acquired
August 14, 2013
Publication Date
August 1, 1989
Publication Information
Publication: Geophysical Research Letters
Volume: 16
ISSN: 0094-8276
Subject Category
LUNAR AND PLANETARY EXPLORATION
Distribution Limits
Public
Copyright
Other