Gattinger R.L.,University of Saskatchewan |
McDade I.C.,York University |
Broadfoot A.L.,Street 1629 iversity Blvd |
Evans W.F.J.,York University |
And 3 more authors.
Canadian Journal of Physics | Year: 2012
Observations of the limb night airglow spectrum from 250 to 475 nm, emitted from the upper mesosphere and lower thermosphere, are compared with model spectra. Data from the Arizona GLO-1 imaging spectrograph and the OSIRIS spectrograph are combined to form the observed mean airglow spectrum; a tabulated version of this spectrum is included. Model spectra of the individual O 2 Herzberg I, II, and III, Chamberlain, and Slanger band systems are combined to simulate the observed mean spectrum. Franck-Condon relative band intensities are used to form a series of basis functions for the upper vibrational levels in each band system. These functions are fitted to the observed airglow spectrum with a least-squares method, the relative vibrational populations are derived and discussed. © 2012 Published by NRC Research Press.