Abstract:
We examine variations in airglow in the 555.7 nm atomic oxygen line and the ONI index of the El Niño Southern Oscillation (ENSO) phenomenon in 1997–2017. Correlation between these parameters is revealed. During the prolonged La Niña episode of 1991–2001, the 557.7 nm emission depression was observed, where as in the extreme El Niño episode of 2015–2016, the 557.7 nm emission increased. We discuss possible mechanisms of the ENSO phenomenon effect on the airglow. A tentative conclusion has been made that long-term and interannual intensity variations in the 557.7 nm emission can result from the joint effect of solar activity and changes in the global atmospheric circulation.
Keywords:
airglow, 557.7 nm emission, El Niño/La Niña
References:
- Uma Das, 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. P. 941–948.
- 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 ajeronomija. 2001. V. 41, N 4. P. 557–562.
- Fukuyama K. Airglow variations and dynamics in the lower thermosphere and upper mesosphere III. Variations during stratospheric warming events // J. Atmos. Terr. Phys. 1977. V. 39, N 3. P. 317–331.
- 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, N 8–11. P. 1273–1286.
- Scheer J., Reisin E.R. Unusually low airglow intensities in the Southern Hemisphere midlatitude mesopause region // Earth Planets Space. 2000. V. 52, N 4. P. 261–266.
- Mikhalev А.V., Stoeva P., Medvedeva I.V., Benev B., Medvedev A.V. Behavior of the atomic oxygen 557.7 nm atmospheric emission in the current solar cycle 23 // Adv. Space Res. 2008. V. 41, Is. 4. P. 655–659.
- Givishvili G.V., Leshhenko L.N., Lysenko E.V., Perov S.P., Semenov A.I., Sergeenko N.P., Fishkova L.M., Shefov N.N. Mnogoletnie trendy nekotoryh harakteristik zemnoj atmosfery. Rezul'taty izmerenij // Izv. RAN. Fiz. atmosf. i okeana. 1996. V. 32, N 3. P. 329–339.
- Mihalev A.V. Izluchenie verhnej atmosfery Zemli i kolebanija klimaticheskoj sistemy «atmosfera–okean» // Optika atmosf. i okeana. 2012. V. 25, N 1. P. 66–69; Mikhalev A.V. Airglow and variations in the atmosphere–ocean climatic system // Atmos. Ocean. Opt. 2012. V. 25, N 3. P. 224–227.
- Shefov N.N. Solnechnaja aktivnost' i prizemnaja cirkuljacija kak soizmerimye istochniki variacij teplovogo rezhima nizhnej termosfery // Geomagnetizm i ajeronomija. 1985. V. 25, N 5. P. 848–849.
- Ghodpage R.N., Hickey M.P., Taori A.K., Siingh D., Patil P.T. Response of OH airglow emissions to mesospheric gravity waves and comparisons with full-wave model simulation at a low-latitude Indian station // Atmos. Chem. Phys. 2016. V. 16, N 9. P. 5611–5621.
- Pedatella N.M., Liu H.-L. Influence of the El Niño Southern Oscillation on the middle and upper atmosphere // J. Geophys. Res.: Space Phys. 2013. V. 118. P. 2744–2755. DOI: 10.1002/jgra.50286.