Possible nitric acid coating formation over Pinatubo aerosols inferred with a microphysical code: A case study during EASOE

Journal Article · Wed Jun 22 04:00:00 EDT 1994 · Geophysical Research Letters (American Geophysical Union); (United States)

DOI:https://doi.org/10.1029/94GL00212· OSTI ID:6592799

Rizi, V ^[1]; Redaelli, G; Verdecchia, M; Visconti, G ^[2]; Stefanutti, L ^[3]; Wolf, J P ^[4]

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1. Instituto Nazionale di Geofisica, Rome (Italy) Univ. degli Studi, L'Aquila (Italy)
2. Univ. degli Studi, L'Aquila (Italy)
3. IROE/CNR, Firenze (Italy)
4. Freie Universitaet, Berlin (Germany)

The authors present a case study of observations made with ground based lidar from Sodankyla, Finland, of stratospheric particles. Their interest was in using lidar to distinguish ice particles from polar stratospheric clouds, but the large density of volcanic aerosols present from the Mt. Pinatubo eruption, made this task more difficult during the 1991-92 winter. The authors observed a major difference in the reflected signals coming from one region over a two day period in January 1992, and argue here the origin of this may have been due to condensation of nitric acid on the surface of volcanic aerosols present in this stratospheric layer. They support this argument with microphysical calculations.

• OSTI ID: 6592799
• Journal Information: Geophysical Research Letters (American Geophysical Union); (United States), Journal Name: Geophysical Research Letters (American Geophysical Union); (United States) Vol. 21:13; ISSN GPRLAJ; ISSN 0094-8276
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540120* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
AEROSOLS
CLOUDS
COLLOIDS
DEVELOPED COUNTRIES
DISPERSIONS
EARTH ATMOSPHERE
ECOLOGICAL CONCENTRATION
EUROPE
FINLAND
FLUIDS
GASES
HYDROGEN COMPOUNDS
ICE
INORGANIC ACIDS
MEASURING INSTRUMENTS
NITRIC ACID
OPTICAL RADAR
RADAR
RANGE FINDERS
SCANDINAVIA
SOLS
STRATOSPHERE
VAPOR CONDENSATION
VOLCANIC GASES
WESTERN EUROPE