Shortwave radiation

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  • Shortwave Radiation
definition
  • Shortwave radiation is electromagnetic radiation in the visible and near-visible portions of the spectrum (0.4 to 1.0 microns). Shortwave radiation is the small fraction of the sun's total radiated energy reaching the atmosphere. Shortwave radiation reaching the surface of the ocean is direct radiation or indirect radiation scattered from the atmosphere.  
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Abstract from DBPedia
    Shortwave radiation (SW) is radiant energy with wavelengths in the visible (VIS), near-ultraviolet (UV), and near-infrared (NIR) spectra. There is no standard cut-off for the near-infrared range; therefore, the shortwave radiation range is also variously defined. It may be broadly defined to include all radiation with a wavelength between 0.1μm and 5.0μm or narrowly defined so as to include only radiation between 0.2μm and 3.0μm. There is little radiation flux (in terms of W/m²) to the Earth's surface below 0.2μm or above 3.0μm, although photon flux remains significant as far as 6.0μm, compared to shorter wavelength fluxes. UV-C radiation spans from 0.1μm to .28μm, UV-B from 0.28μm to 0.315μm, UV-A from 0.315μm to 0.4μm, the visible spectrum from 0.4μm to 0.7μm, and NIR arguably from 0.7μm to 5.0μm, beyond which the infrared is thermal. Shortwave radiation is distinguished from longwave radiation. Downward shortwave radiation is sensitive to solar zenith angle, cloud cover and surface albedo.

    (Source: http://dbpedia.org/resource/Shortwave_radiation)

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