Variations of 557.7 nm and 630 nm atmospheric emissions in the 23rd solar cycle

Alexander V. Mikhalev; Irina V. Medvedeva; Nadezhda V. Kostyleva; Penka Stoeva

doi:10.1117/12.783531

14 February 2008 Variations of 557.7 nm and 630 nm atmospheric emissions in the 23rd solar cycle

Alexander V. Mikhalev, Irina V. Medvedeva, Nadezhda V. Kostyleva, Penka Stoeva

Proceedings Volume 6936, Fourteenth International Symposium on Atmospheric and Ocean Optics/Atmospheric Physics; 69361C (2008) https://doi.org/10.1117/12.783531
Event: Fourteenth International Symposium on Atmospheric and Ocean Optics/Atmospheric Physics, 2007, Buryatia, Russian Federation

Abstract

We present preliminary analysis of experimental data of the nightglow observation of the atomic oxygen 557.7 nm (emitting layer height is 85-115 km) and 630 nm (180-250 km) lines emissions in the 23-rd solar cycle. The experimental data were obtained at ISTP Geophysical observatory near Irkutsk (52° N, 103° E). The 557.7 nm and 630 nm emissions observational data are compared with atmospheric, solar and geophysical parameters. Generally, the 630 nm emission intensity in the 23-rd solar cycle changed in a phase with the solar cycle, increasing from the period of low solar activity to the period of high solar activity. The difference of correlation coefficient between green line intensity and F_10.7 solar radio flux in various phases of the 23-rd solar cycle was marked. During the increasing and maximum phases of the solar cycle the negative correlation between monthly mean values of the 557.7 nm emission intensity and the F_10.7 was revealed. The correlation became positive during the descending phase. Broken phase synchronism of 557.7 nm emission behavior and F_10.7 during the growth and maximum phase of the 23-rd solar cycle is preliminary interpreted by high sensitivity of the atmospheric parameters determining 557.7 nm emission intensity to atmospheric dynamics and various disturbances including the effects from lower atmospheric layers.

Citation Download Citation

Alexander V. Mikhalev, Irina V. Medvedeva, Nadezhda V. Kostyleva, and Penka Stoeva "Variations of 557.7 nm and 630 nm atmospheric emissions in the 23rd solar cycle", Proc. SPIE 6936, Fourteenth International Symposium on Atmospheric and Ocean Optics/Atmospheric Physics, 69361C (14 February 2008); https://doi.org/10.1117/12.783531

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