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Lidar- and balloon-borne particle counter comparisons following recent volcanic eruptionsBalloon-borne particle counter measurements at Laramie, Wyoming (41 deg N) are used to calculate the expected lidar backscatter at 0.694 micron wavelength from July 1979 to February 1982, a period which included at least four detectable perturbations of the stratospheric aerosol layer due to volcanic eruptions. These calculations are compared with lidar measurements conducted at Garmisch-Partenkirchen (47.5 deg N) during the same period. While the agreement is generally good using only the main mode in the particle size distribution (radius about 0.07 micron) during approximately the first 6 months following a major volcanic eruption, a measured secondary mode near 1 micron radius, when included, improves the agreement. Calculations of the expected backscatter at 25-30 km reveal that substantial number of particles diffuse into this high altitude region about 7 months after a major eruption, and these particles should be taken into account when normalizing lidar at these altitudes.
Document ID
19830049670
Document Type
Reprint (Version printed in journal)
Authors
Hofmann, D. J. (Wyoming Univ. Laramie, WY, United States)
Rosen, J. M. (Wyoming, University Laramie, WY, United States)
Reiter, R. (Wyoming Univ. Laramie, WY, United States)
Jager, H. (Fraunhofer-Institut fuer Atmosphaerische Umweltforschung Garmisch-Partenkirchen, Germany)
Date Acquired
August 11, 2013
Publication Date
April 20, 1983
Publication Information
Publication: Journal of Geophysical Research
Volume: 88
ISSN: 0148-0227
Subject Category
GEOPHYSICS
Distribution Limits
Public
Copyright
Other