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- W2612551421 abstract "This paper presents an attempt for the estimation of the diffuse part of the hourly solar radiation at the ground level using only images of the Earth taken in the 0.4-11 micrometer spectral band by the geostationarymeteorological satellite Meteosat. Once applied to these images, the Heliosat method produces maps of a quantity called the cloud index, which can be related to the clearness index, which in turn provides the hourly global radiation. Two empirical models are presented. The solar elevation is a common input to both models. The first one makes direct use of the cloud index while the second deals with an intermediate quantity, the total nebulosity. A regression relationship is sought between the diffuse component of the hourly solar radiation measured at eleven locations within the network of the French Meteorological Office and the coincident satellite data acquired at Ecole des Mines de Paris during 1984 and 1985. The error (r.m.s.) in the estimation of the hourly diffuse irradiation ranges from 27 Wh/m2 to 98 Wh/m2 if estimation is based upon the cloud index, and from 28 Wh/m2 to 99 Wh/m2 with total nebulosity. The relative error (relative error) is independent of the solar elevation and is about 38%, for both years and both models." @default.
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- W2612551421 date "1995-01-01" @default.
- W2612551421 modified "2023-09-23" @default.
- W2612551421 title "An attempt to estimate the diffuse component of solar radiation on horizontal plane from satellite images" @default.
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