Physics
Scientific paper
Dec 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010ge%26ae..50.1021m&link_type=abstract
Geomagnetism and Aeronomy, Volume 50, Issue 8, pp.1021-1024
Physics
Scientific paper
The effect of anomalously high average nighttime intensities of the atomic oxygen 557.7-nm atmospheric emission (luminescence heights 85-115 km) during sudden winter stratospheric warming events (SWEs) in Eastern Siberia is considered. Analysis of the variations in the 557.7-nm emission intensity ( I 557.7) revealed the interdaily I 557.7-nm variations during SWEs and high average monthly I 557.7-nm values in the winter months in conditions of high solar activity. It has finally been found that the variations with periods of several days, at a maximum of which anomalously high daily values of I 557.7 are observed, are superposed on the average I 557.7-level during SWEs at high solar activity. A high average level of I 557.7 in the winter months in Eastern Siberia can be related to the fact that the atomic oxygen concentration at altitudes of the 557.7 nm emission luminescence increases by a factor of 2-3 in years of high solar activity.
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