Abstract

The results of 900 spectral measurements taken at 35 km altitude in the 2800-Å to 3600-Å wavelength region with 100-Å resolution are given and compared with previous work. The instrument was stepped in elevation from 45° below to 70° above the horizon and was rotated in azimuth. The sun varied in elevation angle from zero to 60°. The signal varied by two orders of magnitude with instrument elevation angle, the minimum occurring at +70° and the maximum at −15° (1.5 × 10−2 W/cm2 sr μ at 3600 Å and the sun at 60° elevation). The radiance level below 3300 Å dropped more rapidly with decreasing wavelength for down-looking than for up-looking instrument elevation angles. The radiance varied by a factor of two with azimuth angle, but with a different trend for downward-looking than for upward-looking instrument elevation angles.

© 1967 Optical Society of America

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References

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  1. A. E. S. Green, Appl. Opt. 3, 203 (1964).
    [CrossRef]
  2. R. N. Chapman et al., Rept. 61–35AGeophysics Corporation of America, 1962.
  3. T. Tohmatsu, C. A. Barth, Trans. Am. Geophys. Union 43, 436 (1962).
  4. G. R. Ban, Symposium on Military Applications of Ultraviolet Radiation, Report LAS–TR–199–37, Univ. of Chicago Laboratory for Applied Sciences, 1962.
  5. D. G. Murcray, J. N. Brooks, J. O. Green, M. M. Working, “Flight Data Rept. No. 8, Vol. II, U. V. Data, Balloon Flight of July 16, 1962”, Denver Research Institute, 5July1963.
  6. J. P. Hennes, W. B. Fowler, L. Dunkleman, J. Geophys. Res. 69, 2835 (1964).
    [CrossRef]
  7. R. M. Friedman, R. D. Rawcliffe, G. E. Meloy, J. Geophys. Res. 68, 6419 (1963); J. Geophys. Res. 71, 5077 (1966).
    [CrossRef]
  8. C. A. Barth, Trans. Am. Geophys. Union 43, 436 (1962).
  9. H. Band, L. Block, Appl. Opt. 4, 355 (1965).
    [CrossRef]
  10. G. Wilkins, Naval Ordnance Test Station, China Lake, California (private communication).
  11. F. C. Harshbarger, M. F. Dorian, unpublished results from the Flight Launched Infrared Probe (FLIP) Program, 1964. The FLIP measurements were obtained for the following approximate conditions: IE= −35°, SA= 90°, SE= 40°, and from an instrument located at an altitude between 100 km and 140 km.
  12. J. C. De Vos, Physica 20, 290 (1954).

1965

1964

A. E. S. Green, Appl. Opt. 3, 203 (1964).
[CrossRef]

J. P. Hennes, W. B. Fowler, L. Dunkleman, J. Geophys. Res. 69, 2835 (1964).
[CrossRef]

1963

R. M. Friedman, R. D. Rawcliffe, G. E. Meloy, J. Geophys. Res. 68, 6419 (1963); J. Geophys. Res. 71, 5077 (1966).
[CrossRef]

1962

C. A. Barth, Trans. Am. Geophys. Union 43, 436 (1962).

T. Tohmatsu, C. A. Barth, Trans. Am. Geophys. Union 43, 436 (1962).

1954

J. C. De Vos, Physica 20, 290 (1954).

Ban, G. R.

G. R. Ban, Symposium on Military Applications of Ultraviolet Radiation, Report LAS–TR–199–37, Univ. of Chicago Laboratory for Applied Sciences, 1962.

Band, H.

Barth, C. A.

C. A. Barth, Trans. Am. Geophys. Union 43, 436 (1962).

T. Tohmatsu, C. A. Barth, Trans. Am. Geophys. Union 43, 436 (1962).

Block, L.

Brooks, J. N.

D. G. Murcray, J. N. Brooks, J. O. Green, M. M. Working, “Flight Data Rept. No. 8, Vol. II, U. V. Data, Balloon Flight of July 16, 1962”, Denver Research Institute, 5July1963.

Chapman, R. N.

R. N. Chapman et al., Rept. 61–35AGeophysics Corporation of America, 1962.

De Vos, J. C.

J. C. De Vos, Physica 20, 290 (1954).

Dorian, M. F.

F. C. Harshbarger, M. F. Dorian, unpublished results from the Flight Launched Infrared Probe (FLIP) Program, 1964. The FLIP measurements were obtained for the following approximate conditions: IE= −35°, SA= 90°, SE= 40°, and from an instrument located at an altitude between 100 km and 140 km.

Dunkleman, L.

J. P. Hennes, W. B. Fowler, L. Dunkleman, J. Geophys. Res. 69, 2835 (1964).
[CrossRef]

Fowler, W. B.

J. P. Hennes, W. B. Fowler, L. Dunkleman, J. Geophys. Res. 69, 2835 (1964).
[CrossRef]

Friedman, R. M.

R. M. Friedman, R. D. Rawcliffe, G. E. Meloy, J. Geophys. Res. 68, 6419 (1963); J. Geophys. Res. 71, 5077 (1966).
[CrossRef]

Green, A. E. S.

Green, J. O.

D. G. Murcray, J. N. Brooks, J. O. Green, M. M. Working, “Flight Data Rept. No. 8, Vol. II, U. V. Data, Balloon Flight of July 16, 1962”, Denver Research Institute, 5July1963.

Harshbarger, F. C.

F. C. Harshbarger, M. F. Dorian, unpublished results from the Flight Launched Infrared Probe (FLIP) Program, 1964. The FLIP measurements were obtained for the following approximate conditions: IE= −35°, SA= 90°, SE= 40°, and from an instrument located at an altitude between 100 km and 140 km.

Hennes, J. P.

J. P. Hennes, W. B. Fowler, L. Dunkleman, J. Geophys. Res. 69, 2835 (1964).
[CrossRef]

Meloy, G. E.

R. M. Friedman, R. D. Rawcliffe, G. E. Meloy, J. Geophys. Res. 68, 6419 (1963); J. Geophys. Res. 71, 5077 (1966).
[CrossRef]

Murcray, D. G.

D. G. Murcray, J. N. Brooks, J. O. Green, M. M. Working, “Flight Data Rept. No. 8, Vol. II, U. V. Data, Balloon Flight of July 16, 1962”, Denver Research Institute, 5July1963.

Rawcliffe, R. D.

R. M. Friedman, R. D. Rawcliffe, G. E. Meloy, J. Geophys. Res. 68, 6419 (1963); J. Geophys. Res. 71, 5077 (1966).
[CrossRef]

Tohmatsu, T.

T. Tohmatsu, C. A. Barth, Trans. Am. Geophys. Union 43, 436 (1962).

Wilkins, G.

G. Wilkins, Naval Ordnance Test Station, China Lake, California (private communication).

Working, M. M.

D. G. Murcray, J. N. Brooks, J. O. Green, M. M. Working, “Flight Data Rept. No. 8, Vol. II, U. V. Data, Balloon Flight of July 16, 1962”, Denver Research Institute, 5July1963.

Appl. Opt.

J. Geophys. Res.

J. P. Hennes, W. B. Fowler, L. Dunkleman, J. Geophys. Res. 69, 2835 (1964).
[CrossRef]

R. M. Friedman, R. D. Rawcliffe, G. E. Meloy, J. Geophys. Res. 68, 6419 (1963); J. Geophys. Res. 71, 5077 (1966).
[CrossRef]

Physica

J. C. De Vos, Physica 20, 290 (1954).

Trans. Am. Geophys. Union

C. A. Barth, Trans. Am. Geophys. Union 43, 436 (1962).

T. Tohmatsu, C. A. Barth, Trans. Am. Geophys. Union 43, 436 (1962).

Other

G. R. Ban, Symposium on Military Applications of Ultraviolet Radiation, Report LAS–TR–199–37, Univ. of Chicago Laboratory for Applied Sciences, 1962.

D. G. Murcray, J. N. Brooks, J. O. Green, M. M. Working, “Flight Data Rept. No. 8, Vol. II, U. V. Data, Balloon Flight of July 16, 1962”, Denver Research Institute, 5July1963.

R. N. Chapman et al., Rept. 61–35AGeophysics Corporation of America, 1962.

G. Wilkins, Naval Ordnance Test Station, China Lake, California (private communication).

F. C. Harshbarger, M. F. Dorian, unpublished results from the Flight Launched Infrared Probe (FLIP) Program, 1964. The FLIP measurements were obtained for the following approximate conditions: IE= −35°, SA= 90°, SE= 40°, and from an instrument located at an altitude between 100 km and 140 km.

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Figures (10)

Fig. 1
Fig. 1

Schematic diagram of spectrometer system.

Fig. 2
Fig. 2

Experiment geometry (schematic).

Fig. 3
Fig. 3

Spectral radiance for several instrument elevation angles, three sun elevation intervals (−1°–0°, 0°–10°, and 50°–60°), and a sun azimuth interval of 0°–10°.

Fig. 4
Fig. 4

Spectral radiance for several instrument elevation angles, three sun elevation intervals (−1°–0°, 0°–10°, and 40°–60°), and a sun azimuth interval of 170°–180°.

Fig. 5
Fig. 5

Radiance vs sun azimuth angle for several instrument elevation angles and at 3100 Å.

Fig. 6
Fig. 6

Radiance vs sun azimuth angle for several instrument elevation angles and at 3600 Å.

Fig. 7
Fig. 7

Radiance vs sun elevation angle for several instrument elevation angles and at 3100 Å.

Fig. 8
Fig. 8

Radiance vs sun elevation angle for several instrument elevation angles and at 3600 Å.

Fig. 9
Fig. 9

Comparison of present work with other results.

Fig. 10
Fig. 10

Comparison of present work with Murcray balloon results.5

Tables (1)

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Table I Estimates of Measurement Accuracy

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