Mesospheric wind determinations and the P1(2) c,d lines of the X 2Pi OH (8-3) band

Details Mesospheric wind determinations and the P1(2) c,d lines of the X 2Pi OH (8-3) band Mesospheric wind determinations and the P1(2) c,d lines of the X 2Pi OH (8-3) band

May 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984georl..11..534h&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 11, May 1984, p. 534-537.

Physics

11

Hydroxyl Emission, Mesosphere, Night Sky, Optical Emission Spectroscopy, Wind Profiles, Doppler Effect

Scientific paper

Mesospheric winds have been determined from ground-based optical measurements of the nighttime sky emission of the P1(2) lines of the X 2Pi OH (8-3) band. The measured winds indicate a 12-hour periodicity with amplitude near 30 m/s, and presumably associated with tidal motions. The frequencies (wavelengths) of these Lambda-doubled P1(2) c,d lines have been measured to be 13,664.44 K (731.6428 nm) and 13,664.31 K (731.6320 nm), with a standard deviation of the mean of 0.001 K (0.00007 nm). The spacing between the two P1(2) lines is found to be 0.1346 + or - 0.0005 K. Incidental to this study is the determination of the frequency (wavelength) of a Xenon line in this region of the spectrum found at 13,663.27 K (731.6874 nm), with the same uncertainty level as the OH lines.

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