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Divari, N. B.

Publications and source records attributed to Divari, N. B..

6 records
All sourcesNASA NTRSDOE OSTI
NASA NTRS1973

On the influence of the atmospheric dust on the zodiacal light polarization

Three color observations of the nightglow brightness and polarization were made to determine the brightness of zodiacal light at the ecliptic pole. On the assumption that the degree of polarization of zodiacal light is 0.20 at the ecliptic pole, the corresponding brightnesses are found to be 68, 70, and 96 G2 stars of the 10th magnitude per square deg. at 0.37, 0.53, and 0.58 micron. The large diurnal variations in observed intensity and direction of polarization are attributed to the effects of dust in the earth's atmosphere.

Divari, N. B.↗
NASA NTRS1973

Optical Properties of atmospheric dust from twilight observations

Three methods of approximation are described and used to separate the primary twilight brightness from the observed brightness. Photoelectric observations obtained are combined with observations from a balloon and from the observatory to derive the atmospheric scattering phase functions of 0.37 micron and 0.58 micron as a function of height. Comparison of these data with data for a Rayleigh atmosphere provide information on the optical properties of dust in the upper atmosphere.

Divari, N. B.↗