Abstract

The effect of a concentrated turbid layer on the polarization of skylight is discussed in this paper. Two idealized models of the turbid atmosphere are employed. In one an aerosol layer is situated below a molecular layer and, in the other, above it. The size distribution of the aerosols of refractive index 1.33 is assumed to follow a power law. Inside the aerosol layer, only primary scattering of light is taken into account and polarization effects are neglected. The importance of the interaction between the aerosol and molecular layers is recognized. The resulting computations show broad agreement with available observations. The importance of the location of the turbid layer in characterizing the emergent radiation is revealed. In particular, the computations have shown that the Babinet and Brewster neutral (zero polarization) points can shift towards the sun from their normal positions in a molecular atmosphere when there is low-level turbidity. Such a shift is indicated by observations.

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  1. Lord Rayleigh, Phil. Mag. XLI, 107 (1871).
  2. S. Chandrasekhar, Radiative Transfer (Oxford University Press, London, 1950), p. 393.
  3. S. Chandrasekhar and D. D. Elbert, Trans. Am. Phil. Soc. (New Series) 44, Part 643 (1954).
  4. C. Dorno, Veröff, Preuss. Meteor. Inst. (Berlin), No. 303 (1919).
  5. C. Jensen, in Handbuch der Geophysik, F. Linke and F. Möller, Eds. (Gerbrüder Borntraeger, Beriin-Nikolassee, 1942), Vol. 8, pp. 527–621.
  6. Z. Sekera, in Advances in Geophysics, H. E. Landsberg, Ed. (Academic Press Inc., New York, 1956), Vol. III, pp. 43–104.
  7. G. C. Holzwarth and C. R. Nagaraja Rao, J. Opt. Soc. Am. 55, 403 (1965).
  8. Muneyasu Kano, Ph.D. dissertation, Department of Meteorology, University of California, Los Angeles (1964, unpublished). Available at University Microfilm, Ann Arbor, Michigan. A limited number of copies are available for distribution at the Dept. of Meteorology, University of California, Los Angeles 90024.
  9. R. S. Fraser, J. Opt. Soc. Am. 54, 157 (1964).
  10. K. L. Coulson, J. V. Dave, and Z. Sekera, Tables Related to Radiation Emerging from a Planetary Atmosphere with Rayleigh Scattering (University of California Press, Los Angeles, 1960), pp. X+548.
  11. G. Dietze, Z. Meteorol. 5, 86 (1951).

Chandrasekhar, S.

S. Chandrasekhar, Radiative Transfer (Oxford University Press, London, 1950), p. 393.

S. Chandrasekhar and D. D. Elbert, Trans. Am. Phil. Soc. (New Series) 44, Part 643 (1954).

Coulson, K. L.

K. L. Coulson, J. V. Dave, and Z. Sekera, Tables Related to Radiation Emerging from a Planetary Atmosphere with Rayleigh Scattering (University of California Press, Los Angeles, 1960), pp. X+548.

Dave, J. V.

K. L. Coulson, J. V. Dave, and Z. Sekera, Tables Related to Radiation Emerging from a Planetary Atmosphere with Rayleigh Scattering (University of California Press, Los Angeles, 1960), pp. X+548.

Dietze, G.

G. Dietze, Z. Meteorol. 5, 86 (1951).

Dorno, C.

C. Dorno, Veröff, Preuss. Meteor. Inst. (Berlin), No. 303 (1919).

Elbert, D. D.

S. Chandrasekhar and D. D. Elbert, Trans. Am. Phil. Soc. (New Series) 44, Part 643 (1954).

Fraser, R. S.

R. S. Fraser, J. Opt. Soc. Am. 54, 157 (1964).

Holzwarth, G. C.

G. C. Holzwarth and C. R. Nagaraja Rao, J. Opt. Soc. Am. 55, 403 (1965).

Jensen, C.

C. Jensen, in Handbuch der Geophysik, F. Linke and F. Möller, Eds. (Gerbrüder Borntraeger, Beriin-Nikolassee, 1942), Vol. 8, pp. 527–621.

Kano, Muneyasu

Muneyasu Kano, Ph.D. dissertation, Department of Meteorology, University of California, Los Angeles (1964, unpublished). Available at University Microfilm, Ann Arbor, Michigan. A limited number of copies are available for distribution at the Dept. of Meteorology, University of California, Los Angeles 90024.

Rao, C. R. Nagaraja

G. C. Holzwarth and C. R. Nagaraja Rao, J. Opt. Soc. Am. 55, 403 (1965).

Rayleigh, Lord

Lord Rayleigh, Phil. Mag. XLI, 107 (1871).

Sekera, Z.

Z. Sekera, in Advances in Geophysics, H. E. Landsberg, Ed. (Academic Press Inc., New York, 1956), Vol. III, pp. 43–104.

K. L. Coulson, J. V. Dave, and Z. Sekera, Tables Related to Radiation Emerging from a Planetary Atmosphere with Rayleigh Scattering (University of California Press, Los Angeles, 1960), pp. X+548.

Other (11)

Lord Rayleigh, Phil. Mag. XLI, 107 (1871).

S. Chandrasekhar, Radiative Transfer (Oxford University Press, London, 1950), p. 393.

S. Chandrasekhar and D. D. Elbert, Trans. Am. Phil. Soc. (New Series) 44, Part 643 (1954).

C. Dorno, Veröff, Preuss. Meteor. Inst. (Berlin), No. 303 (1919).

C. Jensen, in Handbuch der Geophysik, F. Linke and F. Möller, Eds. (Gerbrüder Borntraeger, Beriin-Nikolassee, 1942), Vol. 8, pp. 527–621.

Z. Sekera, in Advances in Geophysics, H. E. Landsberg, Ed. (Academic Press Inc., New York, 1956), Vol. III, pp. 43–104.

G. C. Holzwarth and C. R. Nagaraja Rao, J. Opt. Soc. Am. 55, 403 (1965).

Muneyasu Kano, Ph.D. dissertation, Department of Meteorology, University of California, Los Angeles (1964, unpublished). Available at University Microfilm, Ann Arbor, Michigan. A limited number of copies are available for distribution at the Dept. of Meteorology, University of California, Los Angeles 90024.

R. S. Fraser, J. Opt. Soc. Am. 54, 157 (1964).

K. L. Coulson, J. V. Dave, and Z. Sekera, Tables Related to Radiation Emerging from a Planetary Atmosphere with Rayleigh Scattering (University of California Press, Los Angeles, 1960), pp. X+548.

G. Dietze, Z. Meteorol. 5, 86 (1951).

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