Premium
Coincident imaging and spectrometric observations of zenith OH nightglow structure
Author(s) -
Taylor M. J.,
Turnbull D. N.,
Lowe R. P.
Publication year - 1991
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/91gl01298
Subject(s) - zenith , airglow , brightness , infrared , optics , spectrometer , imaging spectrometer , wavelength , remote sensing , physics , geology
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 31 March. 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‐Väisälä period indicating that very high resolution measurements are necessary to investigate short period (<20 min) upper atmospheric wave motions.