Vol. 30, issue 04, article # 6

Abstract:

From long-term observations of the upper atmosphere emission in Eastern Siberia, we studied features of seasonal [OI] 557.7 nm emission variations. We found qualitative similarity with seasonal 557.7 nm emission variations obtained from other mid-latitude stations in the Northern hemisphere in previous decades. Among differences are less pronounced annual summer maximum and significantly lower values of 557.7 nm emission intensity in April and the next three months. We found significant correlation coefficients between the monthly averages of 557.7 nm emission intensity and F_10.7 solar radio flux index only for autumn and winter months. We discussed possible reasons and mechanisms of the observed 557.7 nm emission variations. We used observations from the Geophysical Observatory of Institute of Solar-Terrestrial Physics SB RAS (52° N, 103° E) for 1997–2016.

Keywords:

airglow, 557.7 nm emission, seasonal variations, solar activity

References:

1. Das Uma, Pan C.J., Sinha H.S.S. Effects of solar cycle variations on oxygen green line emission rate over Kiso, Japan // Earth Planets Space. 2011. V. 63, N 8. P. 941–948.
2. Shefov N.N., Semenov A.I., Homich V.Ju. Izluchenie verhnej atmosfery – indikator ee struktury i dinamiki. M.: GEOS, 2006. 741 p.
3. Shepherd G.G., Cho Young-Min, Liu G., Shepherd M.G., Roble R.G. Airglow variability in the context of the global mesospheric circulation // J. Atmos. Sol.-Terr. Phys. 2006. V. 68, N 17. P. 2000–2011.
4. Fukuyama K. Airglow variations and dynamics in the lower thermosphere and upper mesosphere. II. Seasonal and long-term variations // J. Atmos. Terr. Phys. 1977. V. 39, N 1. P. 1–14.
5. Mihalev A.V., Medvedeva I.V. Sezonnyj hod jemissii verhnej atmosfery v linii atomarnogo kisloroda 558 nm // Optika atmosf. i okeana. 2002. V. 15, N 11. P. 993–997.
6. Mikhalev A.V., Medvedeva I.V., Kazimirovsky E.S., Potapov A.S. Seasonal variation of upper – atmospheric emission in the atomic oxygen 555 nm line over East Siberia // Adv. Space Res. 2003. V. 32, N 9. P. 1787–1792.
7. Fishkova L.M. Nochnoe izluchenie sredneshirotnoj verhnej atmosfery Zemli. Tbilisi: Mecniereba, 1983. 271 p.
8. Fishkova L.M., Marcvaladze N.M., Shefov N.N. Zakonomernosti variacij jemissii atomarnogo kisloroda 557,7 nm // Geomagnetizm i ajeron. 2000. V. 40, N 6. P. 107–111.
9. Fishkova L.M., Marcvaladze N.M., Shefov N.N. Sezonnye variacii zavisimosti jemissii atomarnogo kisloroda 557,7 nm ot solnechnoj aktivnosti i mnogoletnego trenda // Geomagnetizm i ajeron. 2001. V. 41, N 4. P. 557–562.
10. Kyo Yano. A long-term aspect of the seasonal variation in the nightglow 5577 intensity at middle latitudes // Planet. Space Sci. 1967. V. 15, N 6. P. 1091–1093.
11. Liu Guiping, Shepherd G.G., Roble R.G. Seasonal variations of the nighttime O(¹S) and OH airglow emission rates at mid-to-high latitudes in the context of the large-scale circulation // J. Geophys. Res. 2008. V. 113. P. A06302. DOI: 10.1029/2007JA012854.
12. Mihalev A.V. Variacii atmosfernoj jemissii 557,7 nm v period dejstvija stratosfernyh poteplenij v uslovijah vysokoj i nizkoj solnechnoj aktivnosti // Solnechno-zemnaja fizika. 2010. Issue 15. С. 127–130.
13. Mikhalev A.V. Variations in the 557.7 nm atmospheric emission during stratospheric warming events under conditions of high and low solar activity // Geomagn. Aeron. 2010. V. 50, N 8. P. 1021–1024.
14. Vergasova G.V., Kazimirovskij Je.S. Nezonal'nost' vetrovogo polja v oblasti verhnej mezosfery/nizhnej termosfery kak vozmozhnoe projavlenie vneshnego vozdejstvija // Geomagnetizm i ajeron. 1999. Т. 39, № 6. С. 95–100.
15. Wang D.Y., Ward W.E., Solheim B.H., Shepherd G.G. Longitudinal variations of green line emission rates emission rates observed by WINDII at altitudes 90–120 km during 1991–1996 // J. Atmos. Sol.-Terr. Phys. 2002. V. 64, iss. 8–11. P. 1273–1286.