Abstract

Observations of absorption of solar radiation by atmospheric nitric acid obtained on different balloon flights are presented. This absorption occurs in three different wavelength intervals. The use of the very long paths, occurring near sunset, for enhancing weak absorption is discussed.

© 1969 Optical Society of America

Full Article  |  PDF Article

References

  • View by:
  • |
  • |
  • |

  1. David G. Murcray, F. H. Murcray, and W. J. Williams, Appl. Opt. 6, 191 (1967).
    [Crossref] [PubMed]
  2. G. M. McGraw, D. L. Bernitt, and I. C. Hisatune, J. Chem. Phys. 42, 237 (1965).
    [Crossref]
  3. Paul E. Rhine, Lloyd D. Tubbs, and Dudley Williams, J. Opt. Soc. Am. 59, 483A (1969).

1969 (1)

Paul E. Rhine, Lloyd D. Tubbs, and Dudley Williams, J. Opt. Soc. Am. 59, 483A (1969).

1967 (1)

1965 (1)

G. M. McGraw, D. L. Bernitt, and I. C. Hisatune, J. Chem. Phys. 42, 237 (1965).
[Crossref]

Bernitt, D. L.

G. M. McGraw, D. L. Bernitt, and I. C. Hisatune, J. Chem. Phys. 42, 237 (1965).
[Crossref]

Hisatune, I. C.

G. M. McGraw, D. L. Bernitt, and I. C. Hisatune, J. Chem. Phys. 42, 237 (1965).
[Crossref]

McGraw, G. M.

G. M. McGraw, D. L. Bernitt, and I. C. Hisatune, J. Chem. Phys. 42, 237 (1965).
[Crossref]

Murcray, David G.

Murcray, F. H.

Rhine, Paul E.

Paul E. Rhine, Lloyd D. Tubbs, and Dudley Williams, J. Opt. Soc. Am. 59, 483A (1969).

Tubbs, Lloyd D.

Paul E. Rhine, Lloyd D. Tubbs, and Dudley Williams, J. Opt. Soc. Am. 59, 483A (1969).

Williams, Dudley

Paul E. Rhine, Lloyd D. Tubbs, and Dudley Williams, J. Opt. Soc. Am. 59, 483A (1969).

Williams, W. J.

Appl. Opt. (1)

J. Chem. Phys. (1)

G. M. McGraw, D. L. Bernitt, and I. C. Hisatune, J. Chem. Phys. 42, 237 (1965).
[Crossref]

J. Opt. Soc. Am. (1)

Paul E. Rhine, Lloyd D. Tubbs, and Dudley Williams, J. Opt. Soc. Am. 59, 483A (1969).

Cited By

OSA participates in Crossref's Cited-By Linking service. Citing articles from OSA journals and other participating publishers are listed here.

Alert me when this article is cited.


Figures (7)

Fig. 1
Fig. 1

Atmospheric transmittance vs wavenumber, as observed during the balloon flight of 7 December 1967. The upper spectrum was obtained at a low altitude but high sun. The center spectrum was obtained at 30-km altitude, at solar zenith angle 92.4°. The dashed line indicates the absorption due to HNO3.

Fig. 2
Fig. 2

Atmospheric transmittance vs wavenumber, as observed during the balloon flight of 23 March 1968. The various spectra were obtained with the balloon at 30 km and at the indicated solar-zenith angle.

Fig. 3
Fig. 3

Atmospheric transmittance vs wavenumber, as observed during the balloon flight of 12 August 1968. The various spectra were obtained with the balloon at 30 km and at the indicated solar-zenith angles.

Fig. 4
Fig. 4

Unreduced data comparing the outstanding spectral features of the 11.3-μ region of the flight data (top 4 spectra) with a laboratory spectrum (lower curve) of HNO3 vapor.

Fig. 5
Fig. 5

Plot of air mass traversed by the solar flux in reaching the balloon as a function of solar-zenith angle. The individual curves are given for various balloon altitudes.

Fig. 6
Fig. 6

Minimum altitude along the path traversed by the solar flux in reaching the balloon, as a function of solar zenith angle. Curves are for the indicated balloon altitudes.

Fig. 7
Fig. 7

Amount of HNO3 vs air mass in the optical path. Amount of HNO3 was determined from the observed absorptions and the laboratory data of Rhine et al.3 Variation of air mass is due to the change of solar-zenith angle.