Physics
Scientific paper
Jul 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991georl..18.1349t&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 18, July 1991, p. 1349-1352. USAF-supported research.
Physics
10
Aloha System, Hydroxyl Radicals, Infrared Spectra, Near Infrared Radiation, Nightglow, Brunt-Vaisala Frequency, Charge Coupled Devices, Fourier Transformation, Gravity Waves, Infrared Imagery, Spectral Bands
Scientific paper
During the ALOHA-90 campaign, a novel comparative study was made between near-infrared wave structure imaged in the zenith using a CCD camera and that detected at infrared wavelengths by a Fourier Transform Spectrometer. Coincident measurements were made briefly on several occasions and for an extended period on March 31. The temporal variations imaged in the near-infrared structure during this night almost completely matched those detected in the OH (3,1) band spectrometer data when similar viewing fields were compared. However, the image data also displayed small scale wave forms that were not resolved by the larger field instrument. These structures exhibited significant changes in brightness and position on a time scale much shorter than the local Brunt-Vaisala period indicating that very high resolution measurements are necessary to investigate short period (less than 20 min) upper-atmospheric wave motions.
Lowe R. P.
Taylor Mary Jane
Turnbull David N.
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