Diurnal and seasonal variations of the oh (8, 3) airglow band and its correlation with OI 5577 Å

Observations of OI 557.7 nm nightglow at Kolhapur (17° N), India

“…Recently, Liu et al (2008b) observed the nocturnal behaviour of this emission feature to exhibit minimum and maximum, and found the emission to be larger in the early morning hours than in the early night. Several other investigators have reported this type of nocturnal variation of OI 557.7 nm intensity (Takahashi et al, 1977(Takahashi et al, , 1989(Takahashi et al, , 1998Petitdidier and Teitelbaum, 1979;Oznovich et al, 1995;Shepherd and McLandress, 1995;Zhang et al, 1998;Wiens et al, 1999;Buriti et al, 2001). Although the earlier measurements correspond to different epochs and locations on the globe, it is interesting to note that the occurrence of minima noticed here is in par with earlier reports, and this speaks of the general behaviour of this emission feature globally during night.…”

“…On such nights, the variation of OH Meinel band intensity also showed similar tendency (Parihar and Mukherjee, 2008). This type of nocturnal variation is a widely observed feature, and has been explained in terms of the loss of atomic oxygen and absence of photolysis during the night (Takahashi et al, 1977). Sometimes such monotonous decreasing tendency was superseded by an increase in intensity during the dawn hours.…”

“…It is now well known that such observed variations of intensity are mainly due to the changes in the local density of atomic oxygen. Takahashi et al (1977Takahashi et al ( , 1998, Petitdidier and Teitelbaum (1979), and Yee and Abreu (1987) have accounted for such an observed feature to an increase in atomic oxygen density in the post-midnight period, explaining that such a phenomenon would happen either as a consequence of an increase of mixing ratio or a change in Fig. 2.…”

“…Parihar et al: Observations of OI 557.7 nm nightglow at Kolhapur (17 • N), India emission intensity, being directly dependent on atomic oxygen, is expected to reflect the dynamical influence in the form of temporal variations. Since the 1980s, Takahashi et al (1977Takahashi et al ( , 1985Takahashi et al ( , 1989Takahashi et al ( , 1998, Teitelbaum (1977, 1979), Misawa and Takeuchi (1982), Yee and Abreu (1987), Oznovich et al (1995), Shepherd and McLandress (1995), Zhang et al (1998), Wiens et al (1999), and Buriti et al (2001) have reported the nocturnal behaviour of the oxygen green line emission. Fukuyama (1976), Petitdidier and Teitelbaum (1977), and Das and Sinha (2008) studied the effect of tidal dynamics on the intensity.…”

Seasonal variations of O<sub>2</sub> atmospheric and OH(6−2) airglowand temperature at mid-latitudes from SATI observations

“…After the discovery of the vibration-rotation of the OH Meinel system in the night airglow by Meinel (1950a), a great number of works have been devoted to the observation of the temporal variations of the emission rates and rotational temperatures of the OH Meinel bands (e.g. Shefov, 1969Shefov, , 1971aTakahashi et al, 1977;Mulligan et al, 1995). These measurements have shown a great variability for the different OH Meinel bands.…”