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Size-specific composition of aerosols in the El Chichon volcanic cloudA NASA U-2 research aircraft flew sampling missions in April, May, July, November, and December 1982 aimed at obtaining in situ data in the stratospheric cloud produced from the March-April 1982 El Chichon eruptions. Post flight analyses provided information on the aerosol composition and morphology. The particles ranged in size from smaller than 0.05 m to larger than 20 m diameter and were quite complex in composition. In the April, May, and July samples the aerosol mass was dominated by magmatic and lithic particles larger than about 3 m. The submicron particles consisted largely of sulfuric acid. Halite particles, believed to be related to a salt dome beneath El Chichon, were collected in the stratosphere in April and May. On the July 23 flight, copper-zinc oxide particles were collected. In July, November, and December, in addition to the volcanic ash and acid particles, carbon-rich particles smaller than about 0.1 m aerodynamic diameter were abundant.
Document ID
19840038627
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Woods, D. C.
(NASA Langley Research Center Atmospheric Sciences Div., Hampton, VA, United States)
Chuan, R. L.
(Brunswick Corp. Costa Mesa, CA, United States)
Date Acquired
August 12, 2013
Publication Date
November 1, 1983
Publication Information
Publication: Geophysical Research Letters
Volume: 10
ISSN: 0094-8276
Subject Category
Geophysics
Accession Number
84A21414
Distribution Limits
Public
Copyright
Other

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