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The Life Cycle of Stratospheric Aerosol ParticlesThis paper describes the life cycle of the background (nonvolcanic) stratospheric sulfate aerosol. The authors assume the particles are formed by homogeneous nucleation near the tropical tropopause and are carried aloft into the stratosphere. The particles remain in the Tropics for most of their life, and during this period of time a size distribution is developed by a combination of coagulation, growth by heteromolecular condensation, and mixing with air parcels containing preexisting sulfate particles. The aerosol eventually migrates to higher latitudes and descends across isentropic surfaces to the lower stratosphere. The aerosol is removed from the stratosphere primarily at mid- and high latitudes through various processes, mainly by isentropic transport across the tropopause from the stratosphere into the troposphere.
Document ID
Document Type
Reprint (Version printed in journal)
Hamill, Patrick
(San Jose State Univ. CA United States)
Jensen, Eric J.
(NASA Ames Research Center Moffett Field, CA United States)
Russell, P. B.
(NASA Ames Research Center Moffett Field, CA United States)
Bauman, Jill J.
(State Univ. of New York Stony Brook, NY United States)
Date Acquired
August 19, 2013
Publication Date
July 1, 1997
Publication Information
Publication: Bulletin of the American Meteorological Society
Volume: 78
Issue: 7
Subject Category
Environment Pollution
Distribution Limits

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