Anti-correlation between stratospheric aerosol extinction and the Ångström parameter from multiple wavelength measurements with SAGE II - a characteristic of the decay period following major volcanic eruptions

Details Anti-correlation between stratospheric aerosol extinction and the Ångström parameter from multiple wavelength measurements with SAGE II - a characteristic of the decay period following major volcanic eruptions Anti-correlation between stratospheric aerosol extinction and the Ångström parameter from multiple wavelength measurements with SAGE II - a characteristic of the decay period following major volcanic eruptions

Nov 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001georl..28.4063h&link_type=abstract

Geophysical Research Letters, Volume 28, Issue 21, p. 4063-4066

Physics

4

Atmospheric Composition And Structure: Aerosols And Particles, Atmospheric Composition And Structure: Middle Atmosphere-Composition And Chemistry, Global Change: Atmosphere, Global Change: Remote Sensing

Scientific paper

Stratospheric Aerosol and Gas Experiment (SAGE) II data at multiple wavelengths were analyzed to show how aerosol extinction decays with time following major volcanic eruptions. Comparisons were made between the lowest background level in 1999 and the past data record of the stratospheric aerosol layer. The time variation of the extinction coefficients was compared with the Ångström parameter, which is a good indicator of particle size. A clear anti-correlation was found between the extinction and the Ångström parameter after the eruption of Mr. Pinatubo. Comparison of the extinction coefficients and Ångström parameters in 1989 and 1999 made it clear that the aerosol layer was affected by volcanic eruptions in 1989. The distinguishing negative correlation is a characteristic feature of decay periods following volcanic eruptions.

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