Abstract
CℓO has been detected in the stratosphere from observations of the solar spectrum in the infrared, in a small spectral interval near 12 µm. The observations were made with a balloon‐borne laser heterodyne radiometer, launched from Palestine, Texas on September 20. By comparing high sun spectra with a number of sequential spectra taken during sunset, an altitude profile has been calculated in the 29‐38 km altitude range. The results show a peak mixing ratio in excess of one ppb above 34 km, and a rapid decrease in mixing ratio with decreasing altitude below 34 km.
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