Seasonal and Diurnal Variations of Ozone near the Mesopause from Observations of the 11.072-GHz Line
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Rogers-2009-Seasonal and Diurnal.pdf
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680.88 KB
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Author(s)
Pratap, P.
Rogers, Alan E. E.
Lekberg, M.
Date Issued
October 2009
Journal
Journal of Atmospheric and Oceanic Technology
Publisher
American Meteorological Society
Citation
Rogers, A. E. E, M. Lekberg, and P. Pratap. “Seasonal and Diurnal Variations of Ozone near the Mesopause from Observations of the 11.072-GHz Line.” Journal of Atmospheric and Oceanic Technology 26.10 (2009): 2192-2199. © 2009 American Meteorological Society
Version
Final published version
Abstract
Ground-based observations of the 11.072-GHz line of ozone were made from January 2008 through January 2009. These observations provide an estimate of the diurnal and seasonal variations of ozone in the mesopause region. The 11-GHz line is more sensitive to the ozone at higher altitudes than ground observations of the 142-GHz line, because of the reduced Doppler line width. The observations show an increase in the volume mixing ratio of ozone above 80 km at night by more than a factor of 10 and a seasonal variation of about a factor of 2, which is consistent with the semiannual variations of atomic hydrogen in the mesopause region. The diurnal amplitude and rates of change of the mixing ratios at sunrise and sunset are compared with ground-based observations of the 142-GHz line and the observations of the Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) instrument on the Thermosphere, Ionosphere, Mesosphere, Energetics and Dynamics (TIMED) satellite, as well as with a simplified chemical model of the creation and destruction of ozone in the mesopause region.
MIT Department
Haystack Observatory
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
http://dx.doi.org/10.1175/2009jtecha1291.1
