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Proceedings Paper

Ground-based multitemporal measurements of global solar spectral irradiance and estimation of atmospheric transmittance
Author(s): S. S. Manjul; S. D. Verma
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Paper Abstract

Multitemporal measurements in ten discrete spectral bands in the range from 0.4 to 1.0 micron have been carried out with the help of the indigenously developed spectro-polarimeter. The measurements have been carried out under minimum haze sky conditions twice a week in a period of about 100 days. In-band exoatmospheric solar spectral irradiance values for the corresponding sun angles have been computed from the standard available data. The values have been corrected for sun-earth distance and the atmospheric transmittances from space to ground have been estimated. This estimation has been compared with the AFGL LOWTRAN 6 atmospheric model. This exercise would be useful to support/verify existing theoretical models and practical measurements. Additionally, it could be useful to interpolate global ground irradiance with maximum radiometric uncertainties of 11%. This paper describes the experimental details and some of the results obtained.

Paper Details

Date Published: 26 October 1992
PDF: 8 pages
Proc. SPIE 1814, Optical Sensors, (26 October 1992); doi: 10.1117/12.131286
Show Author Affiliations
S. S. Manjul, Space Applications Ctr. (India)
S. D. Verma, Gujarat Univ. (India)

Published in SPIE Proceedings Vol. 1814:
Optical Sensors
Chih-Hong Chen; Tieh-Chu Wang, Editor(s)

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