The sun is fading

Details The sun is fading The sun is fading

Jan 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986sci...231..339k&link_type=abstract

Science (ISSN 0036-8075), vol. 231, Jan. 24, 1986, p. 339.

Computer Science

Sound

2

Brightness, Solar Cycles, Stellar Luminosity, Earth Radiation Budget, Irradiance, Long Term Effects, Rocket Sounding, Solar Terrestrial Interactions, Sunspots

Scientific paper

A decrease in solar brightness of 0.02 percent per year has been observed during at least the past five years on the basis of three independent measures of brightness. Thus, the sun appears to be fading. However, the rate of fading is too high to be part of any long-term change. The decrease is, therefore, linked to some well-known solar cycle, such as the 11-year sunspot cycle or more probably the 22-year magnetic cycle. It is pointed out that over a decade or two, such changes could affect climate. The measures of solar brightness or irradiance are discussed. The Active Cavity Radiometer Irradiance Monitor (ACRIM) on board the recently repaired Solar Maximum Mission satellite is considered along with the Earth Radiation Budget (ERB) experiment on the Nimbus 7 satellite, and instruments on rockets and high-altitude balloons.

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