Behavior of the atomic oxygen 557.7nm atmospheric emission in the solar cycle 23

Seasonal variations of the nighttime O(1S) and OH (8‐3) airglow intensity at Adelaide, Australia

“…We are uncertain as to the origin of this component, but note that it has appeared in other spectral analyses of the Ap index and sunspot number. Periods close to half a solar cycle are relatively common and have been noted in 558 nm intensity by Hernandez [1976], Mikhalev et al [2008], and Semonov and Shefov [1997;reported in Mikhalev et al [2008]. Hernandez [1976] found a 5 year periodicity in one solar cycle of Fabry-Perot spectrometer Doppler…”

“…Periods close to half a solar cycle are relatively common and have been noted in 558 nm intensity by Hernandez [], Mikhalev et al [], and Semonov and Shefov [1997; reported in Mikhalev et al []. Hernandez [] found a 5 year periodicity in one solar cycle of Fabry‐Perot spectrometer Doppler temperatures from the 558 nm emission at Fritz Peak (39.9°N), and Mikhalev et al [] found variations in the 558 nm intensity of 5.5 years over Irkutsk (52°N). This periodicity also occurs in the OH emission.…”

“…For example, Shefov [] found a 5.5 year periodicity in the intensity and rotational temperatures derived from this emission. Interestingly, Mikhalev et al [] find a maximum in the 5.5 year periodicity in the 558 nm airglow intensity in solar cycle 23 at Irkutsk in 1998 and in 2002, a phase in agreement with the present observations. The amplitude in their observations is about 20% of the mean.…”

Airglow and variations in the atmosphere-ocean climatic system

“…It was found that in the period 1998-2001, when the direct dependence of the 557.7 nm emission on the solar activity level [4] was observed to be broken, the coefficient of correlation between the monthly average values of the 557.7 nm emission and ONI reached ∼0.65. This period corresponds to the change in the type of general atmospheric circulation, obtained for the European part of the Russia, dominated by the meridional circulation [http://meteocenter.net/ meteolib/_circ.htm].…”

“…For example, in [3] unusually low intensity values of the atmospheric bands of OH (6-2) hydroxyl and O 2 (0-1) oxygen molecules were noted during the observation period of 1997-1998 in the Southern Hemisphere. In [4] a violation of the direct depen dence of I 557.7 on the solar activity level during 1998-2000 in the Northern Hemisphere was reported. The observed features of airglow variations coincided with one of the strongest manifestations of the ENSO in 1997-1998 for the whole observational period of this phenomenon.…”