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Large ozone perturbations caused by the 1908 Tunguska meteor fall - Were there related weather effectsThe magnitude of the ozone depletion due to the 1908 Tunguska meteor fall is estimated and observational evidence of such a depletion is presented. Calculated stratospheric ozone and NO(x) perturbations caused by the meteor are shown, with the hemispherically averaged model giving total stratospheric ozone reductions as large as 45 percent in the first year, with significant reductions persisting for at least three more years. Ozone depletion above 10 km altitude is found to be about 85 percent for several months, and higher yet at 20, 30, and 40 km. Data from the early 1900s to calculate the variability of the solar constant is used to calculate the ozone column concentration for 1909-11. The results are in close agreement with the model prediction. Weather records of the early 1900s show a cooling trend in the Northern Hemisphere for almost a decade after Tunguska.
Document ID
19820052997
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Turco, R. P.
(R & D Associates Marina del Rey, CA, United States)
Toon, O. B.
(R and D Associates Marina Del Rey, CA, United States)
Park, C.
(R and D Associates Marina Del Rey, CA, United States)
Whitten, R. C.
(R and D Associates Marina Del Rey, CA, United States)
Noerdlinger, P.
(NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
August 10, 2013
Publication Date
January 1, 1981
Subject Category
Geophysics
Meeting Information
Meeting: In: Quadrennial International Ozone Symposium
Location: Boulder, CO
Start Date: August 4, 1980
End Date: August 9, 1980
Accession Number
82A36532
Distribution Limits
Public
Copyright
Other

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