Licht-im-Terrarium: Literaturdatenbank
Licht-im-Terrarium: Literaturdatenbank |
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Gates, D. M. (1966). Spectral distribution of solar radiation at the earth's surface: the spectral quality of sunlight, skylight, and global radiation varies with atmospheric conditions. Science, 151(3710), 523–529. Added by: Sarina (2008-12-16 20:27:07) |
| Resource type: Journal Article BibTeX citation key: MGates1966 View all bibliographic details  |
Categories: Englisch = English Keywords: Sonne = Sun Creators: Gates Collection: Science |
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| Abstract |
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The spectral distribution of the intensity of direct sunlight and scattered skylight and the variation of the intensity with time of day, season, latitude, altitude, and atmospheric condition are important for the distribution of plants and animals on earth, the weathering of natural and manmade materials, the climate of the earth, and illumination for human activity. Atmospheric conditions are widely variable; skies range from clear to overcast, and air ranges from clean to polluted or dusty, and from dry to moist. The direct rays of the sun, illuminating the earth's surface, may traverse a long or a short slant path through the atmosphere, depending on season, time of day, and location. It has been 25 years since Moon wrote his excellent paper (1) on this subject. Our knowledge of the extinction coefficients of the atmosphere, of atmospheric conditions, and of the extraterrestrial spectral distribution of sunlight is greater than it was 25 years ago. It is not my purpose here to attempt to express the spectral distribution of the solar radiation reaching the earth's surface for every ombination of atmospheric conditions; rather, I shall attempt to give easonable examples. For cloudless conditions the greatest variation in the pectral quality of direct sunlight is caused by changes in the concentration of erosol or dust.
Added by: Sarina |