Ground observation of the O₂(0-1) atmospheric band at 8645 Å and the [OI] 5577-Å line

Abstract

A correlation study is made of the diurnal intensity changes of the O2 (0–1) atmospheric band at 8645 Å and the [OI] 5577‐Å line, which are observed every 160 s from the ground level by a tilting filter photometer; the photometer, of which the optics consist of three aspheric lenses, is equipped with a cooled photomultiplier RCA‐C31034A having a small GaAs photocathode. Simultaneous observation of the O2 (0–1) atmospheric band at 8645 Å and the [OI] 5577‐Å line has indicated an excellent correlation in their diurnal intensity variations.

Development of Optical Mesosphere Thermosphere Imagers (OMTI)

“…The good correlation observed between OI (557.7 nm) and O 2 Atmospheric (0-1) bands (Fig. 6) has been reported by previous researchers (e.g., Misawa and Takeuchi, 1977;Rodrigo et al, 1985). The trends of increasing 557.7 nm intensity and of decreasing OH band intensity are similar to those observed at Cachoeira Paulista (23…”

Mesospheric energy loss rates by OH and O<sub>2</sub> emissions at 23<sup>°</sup>S

“…Several investigators have studied the propagation of waves in the mesosphere (tides and gravity waves) using ground-based observations of mesospheric nightglow emissions, e.g., NaD 589.3 nm, OH Meinel bands, O 2 atmospheric (0,1) band and OI 557.7 nm (Krassovsky, 1972;Misawa and Takeuchi, 1977;Takahashi et al, 1985;Taylor et al, 1987;Myrabù and Harang, 1988;Fagundes et al, 1995). However, only a few investigations (e.g., Fukuyama, 1974;Solomon, 1991, 1993;McDade and Llewellyn, 1991) have been dedicated to study these emissions as a mesospheric energy loss mechanism and how these emissions would aect the mesospheric heat budget, since they reduce the amount of energy available for heat in the mesosphere.…”