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Photochemistry of methane and the formation of hydrocyanic acid (HCN) in the earth's early atmosphereA one-dimensional photochemical model is used to analyze the photochemistries of CH4 and HCN in the primitive terrestrial atmosphere. CH4, N2, and HCN photolysis are examined. The background atmosphere and boundary conditions applied in the analysis are described. The formation of HCN as a by-product of N2 and CH4 photolysis is investigated; the effects of photodissociation and rainfall on HCN is discussed. The low and high CH4 mixing ratios and radical densities are studied.
Document ID
19860045959
Document Type
Reprint (Version printed in journal)
Authors
Zahnle, K. J. (NASA Ames Research Center Moffett Field, CA; Michigan, University, Ann Arbor, United States)
Date Acquired
August 12, 2013
Publication Date
February 20, 1986
Publication Information
Publication: Journal of Geophysical Research
Volume: 91
ISSN: 0148-0227
Subject Category
SPACE BIOLOGY
Funding Number(s)
CONTRACT_GRANT: NSF ATM-82-097960
Distribution Limits
Public
Copyright
Other