Abstract

Atmospheric emission spectra in the 700–2800-cm⁻¹ region have been measured from an aircraft at 9.45–11.89-km altitudes. All measurements were made viewing at the zenith at a spectral resolution of 2 cm⁻¹. The measurements were obtained using interferometer spectrometers, and the atmospheric radiation was modulated with a liquid nitrogen cooled chopper that eliminated the thermal emission of the spectrometers from the measured spectra. Essentially all the features of the spectra can be identified with known constituents of the atmosphere. The comparison with a theoretical emission calculation using a tropical atmospheric model was satisfactory except for the H₂O that showed a smaller concentration by a factor of 5 than was assumed in the model at these altitudes.

© 1974 Optical Society of America

Remote Atmospheric Sensing with an Airborne Laser Absorption Spectrometer

R. T. Menzies and M. T. Chahine
Appl. Opt. 13(12) 2840-2849 (1974)

Variation of the Infrared Solar Spectrum Between 700 cm⁻¹ and 2240 cm⁻¹ with Altitude

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Atmospheric Emission Measurements with a Balloon-Borne Michelson Interferometer

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Mid-infrared measurements of the atmospheric emission over the South Pole using a radiometrically calibrated Fourier transform spectrometer

Renate Van Allen, Frank J. Murcray, and Xu Liu
Appl. Opt. 35(9) 1523-1530 (1996)