Night airglow OH (8-3) band rotational temperatures at Poker Flat, Alaska

Details Night airglow OH (8-3) band rotational temperatures at Poker Flat, Alaska Night airglow OH (8-3) band rotational temperatures at Poker Flat, Alaska

Oct 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984jgr....89.9153m&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 89, Oct. 1, 1984, p. 9153-9156.

Physics

7

Alaska, Atmospheric Temperature, Hydroxyl Emission, Nightglow, Annual Variations, Mesopause, Molecular Rotation, Spectral Resolution

Scientific paper

A one meter high-throughput Ebert-Fastie spectrometer was used to obtain night sky spectra in the 7220-7450 A region of the OH (8-3) band. A spectral resolution of 2 A was attained and auroral contamination was avoided by taking data in magnetic quiet times. Individual OH rotational temperatures were calculated from 30- and 60-min integration periods, yielding temperatures accurate to 5 K. Three year mean temperatures for the first 4 mo of the year in 1976-78 were 229, 224, 213 and 193 K, respectively. No significant influence of the solar cycle/geomagnetic activity effect on the mesopause temperature was detected. The temperature averages were nearly 15 K higher than those predicted with the CIRA (1972) model, yet displayed the same downward trend with progress of the year.

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