Mathematics – Logic
Scientific paper
Feb 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988mesjj..66..167a&link_type=abstract
Meteorological Society of Japan, Journal (ISSN 0026-1165), vol. 66, Feb. 1988, p. 167-177.
Mathematics
Logic
2
Astronomical Photometry, Colorimetry, Radiant Flux Density, Solar Radiation, Solar Terrestrial Interactions, Turbidity, Diffuse Radiation, Spectral Energy Distribution
Scientific paper
Using atmospheric models described by Arao and Tanaka (1986), the photometric and colorimetric properties of the solar aureole were studied for various conditions of atmospheric turbidity, with special consideration given to the effect of the circumsolar radiation on the measurement of direct solar radiation and to the error in the determination of atmospheric turbidity due to additional circumsolar radiation. The results show that the solar aureole significantly affects the values of the Angstroem's turbidity parameters determined from direct solar radiation measurements, suggesting that the spectral extinction measurements should be made by a photometer with the aperture angle as narrow as possible. It was found that the colorimetric property of the solar aureole varies noticeably from one place to another, especially for the atmosphere containing large particles, although the most reddish point does not change its position of about 1.6-deg from the sun for different turbidity conditions.
Arao Kimio
Tanaka Masayuki
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