NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Evolution of Pinatubo aerosol near 19 km altitude over western North AmericaStratospheric aerosols, collected near 19 km altitude on wire impactors over western North America from August 20, 1991 to May 11, 1993, show strong influence of the June 1991 Mt. Pinatubo eruption. Lognormal size distributions are bimodal; each of the mode radii increases and reaches maximum value at about 15 months after eruption. The second (large particle) mode becomes well developed then, and about 40% of the droplets are larger than 0.4 micron radius. The eruption of Mt. Spurr (Alaska) may also have contributed to this. Sulfate mass loading decays exponentially (e-folding 216 days), similar to El Chichon. Silicates are present in samples only immediately after eruption. Two years after eruption, sulfate mass loading is about 0.4 micrograms/cu m, about an order of magnitude higher than background pre-volcanic values. Aerosol size distributions are still bimodal with a very well-defined large droplet mode.
Document ID
19950046497
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Goodman, Jindra
(San Jose State University San Jose, CA, United States)
Snetsinger, K. G.
(NASA Ames Research Center Moffett Field, CA, United States)
Pueschel, R. F.
(NASA Ames Research Center Moffett Field, CA, United States)
Ferry, G. V.
(NASA Ames Research Center Moffett Field, CA, United States)
Verma, S.
(TMA/Norcal, Inc. Richmond, CA, United States)
Date Acquired
August 16, 2013
Publication Date
June 15, 1994
Publication Information
Publication: Geophysical Research Letters
Volume: 21
Issue: 12
ISSN: 0094-8276
Subject Category
Geophysics
Accession Number
95A78096
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available