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originally posted by: greendust
as always, look to the sun.
People have this bizarre earth centric reality. The Sun doesnt care what we think or do. It does what it does and the earth profits or suffers.
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originally posted by: 1947boomer
originally posted by: greendust
as always, look to the sun.
People have this bizarre earth centric reality. The Sun doesnt care what we think or do. It does what it does and the earth profits or suffers.
.....
Yes, and what it mostly does is not vary its total solar irradiance very much. There are at least two dozen ground based solar observatories around the world, not to mention several space-based solar observatories in orbit. This might be a new idea to you, but direct measurement of the Sun's energy output has been going on for a long time. The average energy output that has been shining on the top of the Earth's atmosphere from 1700 to the present is about 1361 Watts/cm^2 with a variation of about 1/10 of one percent, mostly due to the 11 year sunspot cycle:
www.climate.gov...