Abstract

Solar and skylight measurements were made in southern Thailand from late February to early April of 1969. The aerosol optical density (basis 10) was rather large, ranging from 0.07 to 0.28 at λ0.5 μm and varied with about λ−2 in the range 0.5 < λ < 1.6 μm. The skylight scattering phase function was relatively flat and showed little spectral dependence. The log aerosol size distribution seems close to r−4. The origin of the turbid low level air from the South China Sea and Philippine Sea poses the question of the nature of the aerosol.

© 1971 Optical Society of America

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References

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  1. W. Schuepp, Ann. IGY B2 (Meteorol.), 87 (1964).
  2. F. E. Volz, Ber. Deut. Wetterd. 2, Nr. 13, 47 (1954).
  3. K. Bullrich, R. Eiden, R. Jaenicke, W. Nowak, Pure Appl. Geophys. 69, 280 (1968).
    [CrossRef]
  4. M. Quenzel, J. Geophys. Res. 75, 2915 (1970).
    [CrossRef]
  5. F. E. Volz, J. Atmos. Sci. 27, 1041 (1970).
    [CrossRef]
  6. T. M. Prospero, Bull. Amer. Meteorol. Soc. 49, 645 (1968).
  7. S. Q. Duntley, R. W. Johnson, T. I. Gordon, A. R. Boileau, “Airborne Measurements of Optical Atmospheric Properties at Night,” Rep. AFCRL-70-0137, May1970.
  8. F. E. Volz, “Optik des Dunstes,” in Handbuch der Geophysik8,Physik der Atmosph. I (Borntraeger, Berlin, 1956), pp. 822–897.
  9. E. DeBary, K. Bullrich, Meteorol. Rundsch. 12, 89 (1959).
  10. C. E. Junge, Air Chemistry and Radioactivity, Internat. Geophys. Ser. (Academic Press, New York, 1963), Vol. 4.
    [CrossRef]

1970

M. Quenzel, J. Geophys. Res. 75, 2915 (1970).
[CrossRef]

F. E. Volz, J. Atmos. Sci. 27, 1041 (1970).
[CrossRef]

1968

T. M. Prospero, Bull. Amer. Meteorol. Soc. 49, 645 (1968).

K. Bullrich, R. Eiden, R. Jaenicke, W. Nowak, Pure Appl. Geophys. 69, 280 (1968).
[CrossRef]

1964

W. Schuepp, Ann. IGY B2 (Meteorol.), 87 (1964).

1959

E. DeBary, K. Bullrich, Meteorol. Rundsch. 12, 89 (1959).

1954

F. E. Volz, Ber. Deut. Wetterd. 2, Nr. 13, 47 (1954).

Boileau, A. R.

S. Q. Duntley, R. W. Johnson, T. I. Gordon, A. R. Boileau, “Airborne Measurements of Optical Atmospheric Properties at Night,” Rep. AFCRL-70-0137, May1970.

Bullrich, K.

K. Bullrich, R. Eiden, R. Jaenicke, W. Nowak, Pure Appl. Geophys. 69, 280 (1968).
[CrossRef]

E. DeBary, K. Bullrich, Meteorol. Rundsch. 12, 89 (1959).

DeBary, E.

E. DeBary, K. Bullrich, Meteorol. Rundsch. 12, 89 (1959).

Duntley, S. Q.

S. Q. Duntley, R. W. Johnson, T. I. Gordon, A. R. Boileau, “Airborne Measurements of Optical Atmospheric Properties at Night,” Rep. AFCRL-70-0137, May1970.

Eiden, R.

K. Bullrich, R. Eiden, R. Jaenicke, W. Nowak, Pure Appl. Geophys. 69, 280 (1968).
[CrossRef]

Gordon, T. I.

S. Q. Duntley, R. W. Johnson, T. I. Gordon, A. R. Boileau, “Airborne Measurements of Optical Atmospheric Properties at Night,” Rep. AFCRL-70-0137, May1970.

Jaenicke, R.

K. Bullrich, R. Eiden, R. Jaenicke, W. Nowak, Pure Appl. Geophys. 69, 280 (1968).
[CrossRef]

Johnson, R. W.

S. Q. Duntley, R. W. Johnson, T. I. Gordon, A. R. Boileau, “Airborne Measurements of Optical Atmospheric Properties at Night,” Rep. AFCRL-70-0137, May1970.

Junge, C. E.

C. E. Junge, Air Chemistry and Radioactivity, Internat. Geophys. Ser. (Academic Press, New York, 1963), Vol. 4.
[CrossRef]

Nowak, W.

K. Bullrich, R. Eiden, R. Jaenicke, W. Nowak, Pure Appl. Geophys. 69, 280 (1968).
[CrossRef]

Prospero, T. M.

T. M. Prospero, Bull. Amer. Meteorol. Soc. 49, 645 (1968).

Quenzel, M.

M. Quenzel, J. Geophys. Res. 75, 2915 (1970).
[CrossRef]

Schuepp, W.

W. Schuepp, Ann. IGY B2 (Meteorol.), 87 (1964).

Volz, F. E.

F. E. Volz, J. Atmos. Sci. 27, 1041 (1970).
[CrossRef]

F. E. Volz, Ber. Deut. Wetterd. 2, Nr. 13, 47 (1954).

F. E. Volz, “Optik des Dunstes,” in Handbuch der Geophysik8,Physik der Atmosph. I (Borntraeger, Berlin, 1956), pp. 822–897.

Ann. IGY

W. Schuepp, Ann. IGY B2 (Meteorol.), 87 (1964).

Ber. Deut. Wetterd.

F. E. Volz, Ber. Deut. Wetterd. 2, Nr. 13, 47 (1954).

Bull. Amer. Meteorol. Soc.

T. M. Prospero, Bull. Amer. Meteorol. Soc. 49, 645 (1968).

J. Atmos. Sci.

F. E. Volz, J. Atmos. Sci. 27, 1041 (1970).
[CrossRef]

J. Geophys. Res.

M. Quenzel, J. Geophys. Res. 75, 2915 (1970).
[CrossRef]

Meteorol. Rundsch.

E. DeBary, K. Bullrich, Meteorol. Rundsch. 12, 89 (1959).

Pure Appl. Geophys.

K. Bullrich, R. Eiden, R. Jaenicke, W. Nowak, Pure Appl. Geophys. 69, 280 (1968).
[CrossRef]

Other

C. E. Junge, Air Chemistry and Radioactivity, Internat. Geophys. Ser. (Academic Press, New York, 1963), Vol. 4.
[CrossRef]

S. Q. Duntley, R. W. Johnson, T. I. Gordon, A. R. Boileau, “Airborne Measurements of Optical Atmospheric Properties at Night,” Rep. AFCRL-70-0137, May1970.

F. E. Volz, “Optik des Dunstes,” in Handbuch der Geophysik8,Physik der Atmosph. I (Borntraeger, Berlin, 1956), pp. 822–897.

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Figures (4)

Fig. 1
Fig. 1

Aerosol optical density or turbidity coefficient (left) and aerosol optical thickness (right) at λ0.50 μm (a) and wavelength exponent (b) in Thailand, February to April 1969. KP = Khorat Plateau.

Fig. 2
Fig. 2

Wavelength dependency of aerosol attenuation in Thailand, 1969.

Fig. 3
Fig. 3

Sky radiance in the almucantar of the sun (scattering phase function) and color ratio, normalized to ϕ = 2°. For identification see Table I.

Fig. 4
Fig. 4

Skylight scattering phase functions of the observations at Thailand and at Puerto Rico, July 1969.

Tables (1)

Tables Icon

Table I Radiance Measurements in Thailand

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