Mid-latitude stratospheric aerosol layer enhancement by El Chichon: the first year

Journal Article · Sun Jan 01 04:00:00 EST 1984 · Geophys. Res. Lett.; (United States)

DOI:https://doi.org/10.1029/GL011i001p00076· OSTI ID:6003386

Michalsky, J J; Herman, B M; Larson, N R

Measurements are reported in this paper which indicate the nature of the enhancement of the stratospheric aerosol layer by month for the first full year following the Spring 1982 eruptions of El Chichon. The aerosol optical depths as a function of wavelength are obtained by differencing mean monthly values obtained before and after the eruptions. The first enhancement above background was detected in September 1982. The inverted size distributions indicate a steady increase to larger mean size particles each month with a radius near 0.6 micrometers during the last reported month of March 1983. This size is considerably larger than that which is generally assumed for the sulfuric acid aerosols which form following an eruption. 9 references, 6 figures.

• Research Organization: Pacific Northwest Lab., Richland, WA
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 6003386
• Journal Information: Geophys. Res. Lett.; (United States), Journal Name: Geophys. Res. Lett.; (United States) Vol. 11:1; ISSN GPRLA
• Country of Publication: United States
• Language: English

Related Subjects

500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AEROSOLS
COLLOIDS
DISPERSIONS
EARTH ATMOSPHERE
ECOLOGICAL CONCENTRATION
ERUPTION
HYDROGEN COMPOUNDS
INORGANIC ACIDS
PARTICLE SIZE
PARTICLES
PARTICULATES
POLLUTION SOURCES
SIZE
SOLS
STRATOSPHERE
SULFURIC ACID
VOLCANOES