Ground-based multitemporal measurements of global solar spectral irradiance and estimation of atmospheric transmittance

S. S. Manjul; S. D. Verma

doi:10.1117/12.131286

26 October 1992 Ground-based multitemporal measurements of global solar spectral irradiance and estimation of atmospheric transmittance

S. S. Manjul, S. D. Verma

Author Affiliations +

Proceedings Volume 1814, Optical Sensors; (1992) https://doi.org/10.1117/12.131286
Event: International Symposium on Optoelectronics in Computers, Communications, and Control, 1992, Hsinchu, Taiwan

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.

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S. S. Manjul and S. D. Verma "Ground-based multitemporal measurements of global solar spectral irradiance and estimation of atmospheric transmittance", Proc. SPIE 1814, Optical Sensors, (26 October 1992); https://doi.org/10.1117/12.131286

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