Long-term downward trend in total solar irradiance
Journal Article
·
· Science (Washington, D.C.); (United States)
The first 5 years (from 1980 to 1985) of total solar irradiance observations by the first Active Cavity Radiometer Irradiance Monitor (ACRIM I) experiment on board the Solar Maximum Mission spacecraft show a clearly defined downward trends of -0.019% per year. The existence of this trend has been confirmed by the internal self-calibrations of ACRIM I, by independent measurements from sounding rockets and balloons, and by observations from the Nimbus-7 spacecraft. The trend appears to be due to unpredicted variations of solar luminosity on time scales of years, and it may be related to solar cycle magnetic activity.
- Research Organization:
- California Institute of Technology, Pasadena
- OSTI ID:
- 6901074
- Journal Information:
- Science (Washington, D.C.); (United States), Journal Name: Science (Washington, D.C.); (United States) Vol. 234; ISSN SCIEA
- Country of Publication:
- United States
- Language:
- English
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