Abstract
Measurements have been made of the atmospheric gaseous emission spectrum in the region from 85–118 GHz (wavelength range 3·5–2·5 mm), and the results have been used to estimate the attenuation in the zenith direction over this range, which includes the low frequency side of the oxygen absorption line centered at 118·75 GHz. The results are compared with theoretical predictions based on line shape models in current use, and the discrepancies between experiment and theory are discussed.
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