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GEOPHYSICAL RESEARCH LETTERS, VOL. 27, NO. 1, PAGES 41–44, 2000

Atmospheric Gravity Wave Signatures in the Infrared Hydroxyl OH Airglow

H. U. Frey

Space Sciences Laboratory, University of California, Berkeley


S. B. Mende

Space Sciences Laboratory, University of California, Berkeley


J. F. Arens

Space Sciences Laboratory, University of California, Berkeley


P. R. McCullough

University of Illinois, Urbana


G. R. Swenson

University of Illinois, Urbana


Abstract

Atmospheric gravity wave induced airglow fluctuations of the hydroxyl OH Meinel and other bands are routinely observed using CCD imagers operating in the near infrared wavelength region. Farther into the infrared, the intensity of the OH emissions is much greater. Recently, a new IR imaging camera was modified for infrared viewing of the night sky with approximately 1 steradian field of view. The filter had a center wavelength of 1467 nm and a bandwidth of 177 nm to include components of the OH (Δv = 2) band. The images show good signal-to-noise ratios of 180 with 10 second exposures. Cross-spectral and wavelet analysis were used to obtain spatial and temporal information about observed airglow fluctuations, and horizontal wavelengths and wave periods as short as 3.7 km and 3 min, respectively, were determined.

Received 8 June 1999; accepted 16 November 1999.

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Citation: Frey, H. U., S. B. Mende, J. F. Arens, P. R. McCullough, and G. R. Swenson (2000), Atmospheric Gravity Wave Signatures in the Infrared Hydroxyl OH Airglow, Geophys. Res. Lett., 27(1), 41–44.