Total Solar Irradiance Trend During Solar Cycles 21 and 22

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Science  26 Sep 1997:
Vol. 277, Issue 5334, pp. 1963-1965
DOI: 10.1126/science.277.5334.1963

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Results from Active Cavity Radiometer Irradiance Monitor (ACRIM) experiments show an upward trend in total solar irradiance of 0.036 percent per decade between the minima of solar cycles 21 and 22. The trend follows the increasing solar activity of recent decades and, if sustained, could raise global temperatures. Trends of total solar irradiance near this rate have been implicated as causal factors in climate change on century to millennial time scales.

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