Spectral instrumentation for monitoring atmospheric ozone at millimeter waves

A spectroradiometer operating in the 2-mm wavelength range for monitoring the ozonosphere from the Earth’s surface is described. Unique data on the vertical ozone distribution in layers of the stratosphere and mesosphere difficultly accessed by other techniques have been obtained with this instrument. The reliability of the results of measuring the vertical ozone distribution at millimeter waves is due to the high sensitivity of the spectroradiometer, its optimized characteristics, and highly efficient data-processing techniques.