Solar radiation

Solar radiation is radiant energy emitted by the sun, particularly electromagnetic energy. About half of the radiation is in the visible short-wave part of the electromagnetic spectrum. The other half is mostly in the near-infrared part, with some in the ultraviolet part of the spectrum http://www.grida.no/climate/ipcc_tar/wg1/041.htm#121. The portion of this ultraviolet radiation that is not absorbed by the atmosphere produces a suntan or a sunburn on people who have been in sunlight for extended periods of time.

See also

• Solar neutrino problem: solar neutrino measurement problem
• Solar variation: variations in solar activity
• Solar wind: particles flowing from the Sun
• Coronal mass ejection: large ejection of electrons and protons
• Polar aurora: usually electrons hitting Earth's atmosphere
• Solar flare: eruption creates increase of solar wind particles
• Solar proton event: protons hitting Earth's atmosphere
• Pyranometer: solar radiation sensor or pyranometer