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Baseline ozone results from 1923 to 1955Baseline total atmospheric ozone values from the year 1923 to 1955 are reported which have been derived from observations of the solar constant made by Smithsonian Institution sites in both the Northern and Southern Hemispheres. Ozone was determined from absorption by the broad, weak Chappuis band near 0.6 microns as measured on 1194 days at Mt. Montezuma, Chile and 970 days at Table Mountain, California. Results show systematic changes on the order of 25 percent in the ozone level at Montezuma with a time scale of 10-20 years, although the previously reported 30 percent decrease between 1920-1930 and 1940-1950 is found to have been erroneous. Comparisons of ozone data with geomagnetic indices and sunspot number show a suggestive correlation of ozone with sunspot number, although the relation is not borne out by comparison of ozone and sunspot cycles, or by Fourier analysis. Comparison of ozone data in the Chappuis band obtained by a modern filter-wheel radiometer with that obtained from a Dobson spectrometer at Mauna Loa Observatory shows Chappuis band measurements to be 14 percent lower.
Document ID
19840029406
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Angione, R. J.
(San Diego State Univ. San Diego, CA, United States)
Roosen, R. G.
(San Diego State University San Diego, CA, United States)
Date Acquired
August 12, 2013
Publication Date
August 1, 1983
Publication Information
Publication: Journal of Climate and Applied Meteorology
Volume: 22
ISSN: 0733-3021
Subject Category
Geophysics
Accession Number
84A12193
Funding Number(s)
CONTRACT_GRANT: NSG-1430
Distribution Limits
Public
Copyright
Other

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