Variations in the 557.7-nm atmospheric emission during stratospheric warming events under conditions of high and low solar activity |
| |
| Authors: | A V Mikhalev |
| |
| Institution: | 1.Institute of Solar-Terrestrial Physics, Siberian Branch,Russian Academy of Sciences,Irkutsk,Russia |
| |
| Abstract: | 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. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
