Solar atmospheric coupling by electrons (SOLACE). II - Calculated stratospheric effects of precipitating electrons, 1979-1988

An analysis has been carried out of the effects of energetic electron precipitation (EEP) on stratospheric NO(y), NO2, and O3. Solar wind observations used together with precipitating electron fluxes observed aboard TIROS spacecraft show a close relationship between the long- and short-term fluctuat...

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Bibliographic Details
Published in:Journal of Geophysical Research 1998-11, Vol.103 (D21), p.28
Main Authors: Callis, Linwood B, Natarajan, Murali, Lambeth, James D, Baker, Daniel N
Format: Article
Language:English
Online Access:Get full text
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Summary:An analysis has been carried out of the effects of energetic electron precipitation (EEP) on stratospheric NO(y), NO2, and O3. Solar wind observations used together with precipitating electron fluxes observed aboard TIROS spacecraft show a close relationship between the long- and short-term fluctuations in the solar wind and EEP over a period of 16 yr. Daily electron energy spectra for 4.25-1050 keV and energy deposition profiles are developed for both hemispheres for L not less than 5 and used in 2D chemical transport simulations for the period January 15, 1979, through December 31, 1987. Results indicate that globally averaged column NO(y) (from 25 to 40 km) increases by about 12 percent between 1979 and 1983-1985 with a rapid decline to 1979 levels between early 1985 and 1987. Day-by-day comparisons of the results with the Stratospheric Aerosol and Gas Experiment (SAGE II) column NO2 and O3 for the period October 24, 1984, and December 31, 1987, show good agreement with the inclusion of EEP in the simulations. (Author)
ISSN:0148-0227