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Aerosol nucleation in the winter Arctic and Antarctic stratospheresThe formation rate of sulfuric-acid-water aerosol particles is calculated as a function of altitude for the conditions of the winter Arctic and Antarctic stratospheres. The theoretical results indicate that sulfate particle formation can occur in the polar winter stratosphere. Conditions for new particle formation are increasingly favorable as the altitude increases between 20 and 30 km because of the decrease in surface area of preexisting particles and increasing sulfuric-acid vapor supply. The theoretical predictions are consistent with observations of a high-altitude CN layer over Antarctica in the spring. Available vapor-pressure data indicate that ternary particles composed of sulfuric acid, nitric acid, and water are not thermodynamically stable under winter stratospheric conditions.
Document ID
19900041435
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Hamill, Patrick
(San Jose State University CA, United States)
Toon, O. B.
(NASA Ames Research Center Moffett Field, CA, United States)
Turco, R. P.
(California, University Los Angeles, United States)
Date Acquired
August 14, 2013
Publication Date
March 1, 1990
Publication Information
Publication: Geophysical Research Letters, Supplement
Volume: 17
ISSN: 0094-8276
Subject Category
Geophysics
Accession Number
90A28490
Distribution Limits
Public
Copyright
Other

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