Abstract

A statistical treatment of field measurements carried out by the Astrophysical Observatory of the Smithsonian Institution is presented. The brightness of a band of sky 10° wide, concentric with the sun, has been determined. Measurements were obtained at two high altitude stations (Table Mountain and Montezuma) with the aid of a pyranometer constructed by C., G. Abbot and L. B. Aldrich. The primary object was to obtain an idea of the integral scattering of the sun’s radiation by the atmospheric aerosol. Results have been used to determine long-periodic changes in the scattering properties of the atmosphere and their relation to other phenomena.

© 1974 Optical Society of America

Circumsolar Radiation as a Measure of the Turbidity of the Atmosphere. Part 2

Anders Angstrom
Appl. Opt. 13(6) 1477-1480 (1974)

Atmospheric turbidity and the circumsolar radiation

M. A. Box, S.-Y. Lo, B. H. J. McKellar, and M. H. Reich
Appl. Opt. 16(2) 341-344 (1977)

Calibration of a sunphotometer by simultaneous measurements of direct-solar and circumsolar radiations

Masayuki Tanaka, Teruyuki Nakajima, and Masataka Shiobara
Appl. Opt. 25(7) 1170-1176 (1986)

Monte Carlo Studies of the Sky Radiation at Twilight

Wolfram G. Blättner, Henry G. Horak, Dave G. Collins, and Michael B. Wells
Appl. Opt. 13(3) 534-547 (1974)

Infrared Atmospheric Transmission of Laser Radiation

J. Y. Wang
Appl. Opt. 13(1) 56-62 (1974)