Abstract

A balloon-borne spectrometer was used to measure the atmospheric absorption of solar radiation in the 9–10-μ region as a function of altitude. Among the numerous spectra recorded, several were made with very long optical paths above the troposphere obtained from floating altitude (~30 km) while the sun set. When the experimental results are compared with calculated spectra, based on line by line parameters of the ν₃ and ν₁ fundamentals of ordinary ozone, ¹⁶O₃, combined with the Curtis-Godson approximation, large discrepancies are found for the long path spectra. It is shown that the hot bands ν₃ + ν₂ − ν₂ and ν₃ + ν₃ − ν₃ of the ¹⁶O₃, and the ν₃ fundamentals of the isotopic species ¹⁶O¹⁸O¹⁶O and ¹⁶O¹⁶O¹⁸O, can contribute significant absorption for long paths such as obtained in this experiment. Such long paths also give rise to significant absorptions by the ν₃ − ν₁ and the ν₃ − 2ν₂° bands of CO₂. Including these weak bands in the calculated spectra leads to good agreement with the observed data.

© 1970 Optical Society of America

Atmospheric ozone profiles from high resolution UV spectra obtained with a balloon-borne spectrometer

J. R. Gillis, A. Goldman, W. J. Williams, and D. G. Murcray
Appl. Opt. 21(3) 413-420 (1982)

Statistical Band Model Parameters for Long Path Atmospheric Ozone in the 9–10 μ Region

A. Goldman
Appl. Opt. 9(11) 2600-2604 (1970)

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

D. G. Murcray, F. H. Murcray, W. J. Williams, T. G. Kyle, and A. Goldman
Appl. Opt. 8(12) 2519-2536 (1969)

Absorption of Carbon Dioxide 9.4-μm Laser Radiation by Ozone

Charles Young and R. H. L. Bunner
Appl. Opt. 13(6) 1438-1443 (1974)

Distribution of Water Vapor in the Stratosphere as Determined from Balloon Measurements of Atmospheric Emission Spectra in the 24–29-μm Region

A. Goldman, D. G. Murcray, F. H. Murcray, W. J. Williams, and J. N. Brooks
Appl. Opt. 12(5) 1045-1053 (1973)