Relationships between optical extinction, backscatter and aerosol surface and volume in the stratosphere following the eruption of Mt. Pinatubo

Details Relationships between optical extinction, backscatter and aerosol surface and volume in the stratosphere following the eruption of Mt. Pinatubo Relationships between optical extinction, backscatter and aerosol surface and volume in the stratosphere following the eruption of Mt. Pinatubo

Nov 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993georl..20.2555b&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 20, no. 22, p. 2555-2558

Physics

18

Aerosols, Atmospheric Chemistry, Backscattering, Extinction, Stratosphere, Volcanoes, Airborne Equipment, Atmospheric Composition, Cloud Cover, Midlatitude Atmosphere

Scientific paper

The eruption of the Mt. Pinatubo volcano in the Philippines in June 1991 has resulted in increases in the surface and mass concentrations of aerosol particles in the lower stratosphere. Airborne measurements made at midlatitudes between 15 and 21 km from August 1991 to March 1992 show that, prior to December 1991, the Pinatubo aerosol cloud varied widely in microphysical properties such as size distribution, number, surface and volume concentrations and was also spatially variable. Aerosol surface area concentration was found to be highly correlated to extinction at visible and near-infrared wavelenghts throughout the measurement period. Similarly, backscatter at common lidar wavelengths was a good predictor of aerosol volume concentrations. These results support the use of satellite extinction measurements to estimate aerosol volume or mass if temporal changes in the relationships between the variables are considered.

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